10kW Low Pass Lim rau Muag Yuav Tsawg Pass Lim rau Xov Tooj Cua Chaw Nres Tsheb

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Qhov Twg Yuav Low Pass Lim rau xov tooj cua chaw nres tsheb?

 

 

FMUSER tau yog ib qho ntawm cov thawj coj xov tooj cua studio cov khoom lag luam rau ze li ib nrab xyoo pua. Txij li xyoo 2008, FMUSER tau tsim ib qho chaw ua haujlwm uas txhawb nqa kev sib koom tes zoo ntawm cov neeg ua haujlwm ntawm cov kws tsim qauv tsim qauv thiab cov pab pawg tsim khoom zoo. Los ntawm kev mob siab rau thiab kev mob siab rau kev sib koom tes tiag tiag, FMUSER muaj peev xwm tsim qee qhov kev sib koom ua ke hauv hluav taws xob tshiab tshaj plaws, siv lub sijhawm sim cov ntsiab lus ntawm nag hmo thiab suav nrog kev tshawb fawb qib siab niaj hnub no. Ib qho ntawm peb qhov kev ua tau zoo tshaj plaws, nrog rau kev xaiv nrov ntawm peb cov neeg siv khoom ntau, yog peb RF low pass lim rau xov tooj cua.

 

"Yog tias koj tab tom nrhiav cov khoom siv xov tooj cua tshaj lij rau kev muag khoom, vim li cas ho tsis xaiv ib qho ntawm cov khoom siv tshaj tawm xov xwm zoo tshaj plaws los ntawm FMUSER? Lawv npog tag nrho cov kev sib txuas ntawm cov xov tooj cua frequency lim cov rooj sib txoos, qee qhov ntawm lawv yog qhov tseem ceeb rau lub chaw nres tsheb xov tooj cua, piv txwv li, FM low pass filter, nrog rau ntau HPF kev muag khoom, BPF muag, BSF kev muag khoom, thiab cov lim dej qis qis rau muag xws li 88-108Mhz low pass lim rau muag. UHF thiab VHF lim xws li UHF bandpass lim thiab VHF bandpass lim, thiab tau kawg, lawv kuj muaj cov khoom siv xov tooj cua zoo rau kev muag khoom."

- - - - - James, loyal member of FMUSER

 

Qhov Tom ntej no yog Vim li cas RF Low Power Lim thiaj xav tau? Hla

 

Dab tsi peb coj koj los ntawm nplooj ntawv no

 

  1. Qhov twg yuav Low Pass Filter?
  2. Vim li cas Low Pass RF Lim thiaj xav tau?
  3. Yuav ua li cas cuam tshuam Harmonic thiab Spurious Emissions tshwm sim?
  4. Zoo tshaj RF Low Pass Lim rau muag 
  5. Yuav ua li cas xaiv qhov zoo tshaj plaws FM Harmonics Lim rau Xov Tooj Cua Chaw Nres Tsheb?
  6. Nthuav qhov tseeb txog RF Lim

 

 FMUSER 10kW FM Low Pass Lim Ua haujlwm zoo hauv:

 

  • Cov xov tooj cua FM tshaj lij nyob rau hauv xeev, nroog, thiab hauv nroog
  • Cov xov tooj cua FM nruab nrab thiab loj nrog kev pab cuam dav dav
  • Kev tshaj lij FM xov tooj cua nrog ntau tshaj lab tus neeg tuaj saib
  • Cov neeg ua haujlwm hauv xov tooj cua uas xav tau cov xov tooj cua turnkey ua tiav ntawm tus nqi qis

 

Ua tsaug rau lub ntiaj teb-chav kawm ntawv Hoobkas, FMUSER, raws li ib tug ua chaw tsim tshuaj paus ntawm Cov khoom siv tshaj tawm tshaj tawm, tau ua tiav kev pabcuam txhua yam ntawm cov neeg siv khoom los ntawm kev muab ua tiav cov kev daws teeb meem tshaj tawm rau ntau tshaj 10 xyoo, ib yam yog paub tseeb tias yog ib siab zog lowpass lim nrog 2nd thiab 3rd harmonics filtering feem ntau yog ua haujlwm los ua ke thiab cais cov xov tooj cua wireless los ntawm ntau lub xov tooj cua FM transmitters. 

 

"Tsis tuaj yeem hais tias FMUSER yog cov khoom siv xov tooj cua zoo tshaj plaws nyob hauv lub ntiaj teb, tab sis rau qee tus neeg ua haujlwm hauv xov tooj cua, yog, FMUSER yog qhov tseeb ntawm cov khoom siv thiab cov chaw tsim khoom. Cov khoom siv hauv xov tooj cua."

 

 - - - - - Peter, loyal member of FMUSER

 

▲ Qhov twg yuav qhov zoo tshaj plaws FM Low Pass Lim ▲

▲ Rov qab mus rau Cov Ntsiab Lus ▲

 

Vim li cas RF Low Power Lim thiaj xav tau rau lub chaw nres tsheb xov tooj cua?

 

Previous Part yog Qhov twg yuav qhov zoo tshaj plaws FM Low Pass Lim | Hla

Qhov Tom ntej no yog Yuav Ua Li Cas Tsis Txaus Siab Harmonic thiab Spurious Emissions tshwm sim | Hla

 

Ib qho tseem ceeb ntawm cov khoom siv hauv xov tooj cua

 

Nov yog qee qhov laj thawj vim li cas RF low pass lim yog tsim nyog rau kev lag luam hauv xov tooj cua:

 

  • Harmonics thiab spurious emission tsis tuaj yeem zam tau, thiab lawv yuav cuam tshuam rau cov xov tooj cua hauv xov tooj cua sib txawv thiab txo cov xov tooj cua zoo thiab qhov ntawd yog tus nqi tseem ceeb ntawm coaxial low pass lim rau hauv xov tooj cua chaw nres tsheb.

 

  • Yog tias koj tsis siv tus kws tshaj lij RF qis dhau lim dej, koj yuav raug rau txim los ntawm lub chaw tswj hwm xov tooj cua hauv zos (xws li FCC) rau tsim cov xov tooj cua cuam tshuam loj heev, piv txwv li, cov xov tooj ntawm cov tsis xav tau kev sib haum xeeb thiab cov emissions spurious tsim los ntawm koj lub FM thiab TV transmitter

 

  • Xov tooj cua transmitters siv lub zog loj zaus tsawg dhau cov lim dej kom tsis txhob muaj kev sib raug zoo emissions uas yuav cuam tshuam rau lwm yam kev sib txuas lus.

 

  • Txhawm rau tiv thaiv FM chaw nres tsheb transmitter harmonics: FM transmitters feem ntau tsim harmonics - ntau zaus ntawm transmitter. Qee qhov ua rau muaj kev cuam tshuam nrog VHF-tv thiab UHF-tv txais tos thiab paging thiab txais xov tooj ntawm tes. Qhov no series ntawm high-power low pass filters dhau los ntawm tag nrho cov FM zaus band nrog tsawg poob thiab muab ntau yam kev sib haum xeeb.

 

 

Yuav RF Harmonics Lim los ntawm FMUSER Tshaj Tawm

 

Qhov loj tshaj tus nqi ntawm cov RF Harmonics lim yog los pab cov xov tooj cua xaiv cov teeb liab uas yuav tsum tau siv. Tshwj xeeb tshaj yog rau cov xov tooj cua loj, yuav ua li cas muab cov neeg tuaj saib nrog cov xov tooj cua zoo tshaj plaws yam tsis raug rau txim los ntawm kev tswj hwm xov tooj cua hauv zos yog qhov yuav tsum tau ua ua ntej txhawm rau txhim kho kev sib tw ntawm cov phooj ywg hauv xov tooj cua thiab txhim kho cov khoom lag luam paub txog xov tooj cua.

 

FMUSER muaj harmonic lim xws li cov 10kW FM low pass filter rau transmitter hwj chim theem mus txog 10 kW. Ib qho qauv tsim tshwj xeeb muab 45 dB lossis ntau dua qhov tsis lees paub los ntawm qhov thib ob mus rau qhov thib kaum kev sib haum xeeb thiab dhau mus. Qhov no yields lim nrog tag nrho ntev ntawm 30% mus rau 50% luv dua li FM harmonic lim. 

 

Peb muaj qhov zoo tshaj plaws RF lim rau muag, yuav RF lim uas lub zog ntawm 500W txog 1000W los ntawm FMUSER! Tshwj xeeb, lawv yog 20kW FM low pass lim kev muag khoom (LPF) thiab 10kW VHF low pass lim rau muag (LPF), 10kW VHF bandstop lim kev muag khoom (BSF), 350W UHF digital bandpass lim rau muag, thiab ib qho ntawm peb cov khoom siv hauv xov tooj cua zoo tshaj plaws - FM bandpass lim rau muag.

 

Koj tuaj yeem pom txhua yam koj xav tau yog tias koj mus tshawb nrhiav, peb muaj FM bandpass lim Lub hwj chim ntawm 500W txog 1kW, tshwj xeeb, lawv yog 500W, 1500W, 3000W, 5000W, 10000W FM bandpass lim uas yog tsim tshwj xeeb rau cov xov tooj cua FM. Tsis tas li ntawd, kev kho kom haum yog muaj rau cov lim dej sib haum xeeb, tag nrho lawv nrog cov nqi siv nyiaj thiab kev ua haujlwm zoo, nug peb cov kev txhawb nqa, peb txhua tus pob ntseg!

 

Raws li ib qho ntawm cov kev tshaj tawm xov xwm tseem ceeb tshaj plaws ntawm FM / TV xov tooj cua, lub RF kab noj hniav lim yog qhov tsim nyog raws li FM / UHF / VHF combiner, xov tooj cua tshaj tawm xov tooj cua, xa xov tooj cua, thiab lwm yam khoom siv tshaj tawm hauv xov tooj cua. Nws tsis yog qhov exaggeration hais tias raws li cov khoom tseem ceeb ntawm RF passive cov khoom, cov ntxaij lim dej yog qhov tseem ceeb tshaj li lwm yam kev sib koom ua ke nyob rau hauv repeaters thiab hauv paus chaw nres tsheb.

 

Txawm li cas los xij, RF lim, piv txwv li, qhov tsawg dhau RF lim, yog ib qho khoom siv tsim nyog nyob rau sab kis ntawm qhov chaw tshaj tawm xov xwm txhawm rau txhawm rau ua kom muaj kev sib haum xeeb tsim los ntawm lub transmitter. Qhov no yog vim hais tias RF system cov neeg ua haujlwm thoob plaws ntiaj teb siv ntau zaus, yog li muaj ntau cov teeb meem tsis sib haum xeeb hauv huab cua, qee qhov yog rau TV, tub rog, lwm tus yog rau kev tshawb fawb huab cua thiab lwm lub hom phiaj.

 

▲ Vim li cas RF Lim thiaj xav tau rau lub chaw nres tsheb xov tooj cua ▲

▲ Rov qab mus rau Cov Ntsiab Lus

 

Yuav ua li cas cuam tshuam Harmonic thiab Spurious Emissions tshwm sim?

 

Previous Part yog Vim li cas Low Pass RF Lim thiaj xav tau | Hla

Qhov Tom ntej no yog Zoo tshaj RF Harmonics Lim rau Muag | Hla

 

Dab tsi thab tag nrho RF engineers yog tias kev sib haum xeeb thiab spurious emissions tsis tuaj yeem zam tau. Rau cov neeg ua haujlwm hauv xov tooj cua, nws yog ib qho tseem ceeb heev kom nkag siab txog dab tsi harmonics thiab spurious emissions yog dab tsi, los yog yuav ua li cas lawv yog generated thiab yuav ua li cas txo lawv cov kev cuam tshuam.

 

Nyob rau tib lub sijhawm, nws tseem muaj txiaj ntsig zoo los tswj cov kev pabcuam hauv xov tooj cua zoo, FMUSER tus kws tshaj lij RF pab pawg tau piav qhia rau peb txog qee qhov kev paub txog kev sib haum xeeb thiab spurious emission.

 

Yog tias koj xav nkag siab ntxiv vim li cas cov chaw xov tooj cua xav tau kev lim dej RF, koj yuav xav tau cov ntsiab lus hauv qab no

 

Yuav ua li cas Harmonics Generated?

 

Frequencies uas tshwm sim ntawm ib tug ntau yam ntawm cov input zaus yog hu ua harmonics. Hauv lwm lo lus, kev sib haum xeeb yog qhov tsis xav tau kev sib kis, uas yog ntau yam ntawm qhov xav tau kev sib kis ntau zaus. Qhov kev sib kis tsis xav tau no tshwm sim ntawm qib qis zog dua li qhov xav tau sib kis.

 

Raws li peb txhua tus paub, muaj cov khoom siv tseem ceeb hauv xov tooj cua, uas yog, xov tooj cua transmitters. Txawm hais tias 1kW lossis 10kW transmitter yuav tsim tshwj xeeb, thiab cov khoom siv RF yooj yim ntawm lub transmitter yog nruab nrog lub lim lim, tab sis yuav luag txhua lub RF transmitter yuav tsim ib co kev sib raug zoo, Txawm tias cov kws tshaj lij wireless transmitter tsis tuaj yeem zam txhua qhov kev sib tsoo thiab kev yuam kev. tso pa tawm

 

Harmonics kuj tseem suav tias yog qhov ua rau muaj kev cuam tshuam RF. Qee qhov nthwv dej, xws li cov nthwv dej square, sawtooth nthwv dej, s, thiab daim duab peb sab nthwv dej, muaj ntau lub zog ntawm kev sib haum xeeb zaus.

 

Dab tsi yog Spurious Emission Generated?

 

Tsis zoo li harmonics, spurious emission tsis tshwm sim thaum lub input zaus yog ob npaug; Lawv tsis tau nthuav tawm ntawm lub hom phiaj. Spurious emission yog ib qho kev tso tawm tsis zoo, feem ntau hu ua txaws. Lawv yog cov tshwm sim ntawm intermodulation, electromagnetic cuam tshuam, zaus conversion, los yog harmonics.

 

▲ Yuav Ua Li Cas Tsis Txaus Siab Harmonic thiab Spurious Emissions tshwm sim ▲

▲ Rov qab mus rau Cov Ntsiab Lus ▲

 

Qhov zoo tshaj plaws RF Low Power Lim rau muag 

 

Previous Part yog Yuav ua li cas Harmonics thiab Spurious Emissions tshwm sim | Hla

Qhov Tom ntej no yog Yuav ua li cas xaiv qhov zoo tshaj plaws FM Harmonics Lim | Hla

 

Koj Xav Tau Qhov Tsawg Pass RF Lim Ntau dua li puas tau

 

Peb txhua tus paub tias cov xov tooj cua transmitters siv low pass RF lim los tiv thaiv kev sib raug zoo thiab spurious emissions uas yuav cuam tshuam nrog lwm yam kev sib txuas lus, thaum feem ntau FM transmitters tsim harmonics txawm nyob rau kaum ntawm lub sij hawm ntawm lub hauv paus zaus. 

 

Hmoov zoo, FMUSER 10kW FM low pass filter yog ib qhov zoo tshaj plaws RF system filtering sib dhos rau FM tshaj tawm zaus band. Txhawm rau pab txo qhov cuam tshuam los ntawm kev sib haum xeeb thiab spurious emissions, FMUSER ntawm no nthuav tawm ib qho ntawm peb cov kev zoo siab harmonic lim cov 10 kWm RF low pass lim rau FM xov tooj cua chaw nres tsheb.

 

Tsawg Pass RF Lim tsim tsuas yog rau qhov zoo tshaj plaws

 

Yog tias koj tsis xav kom cov kev sib raug zoo uas tsis xav tau poob rau hauv cov zaus zaus tsis cuam tshuam rau koj thiab ua rau muaj kev cuam tshuam loj (koj tuaj yeem tau txais ib pawg ntawm cov ntawv tsis txaus siab thiab raug txim los ntawm qee lub koom haum tswj hwm), piv txwv li, zaus ntawm TV channel lossis lwm lub xov tooj cua. Siv FMUSER 10kW RF low pass lim yog txoj hauv kev zoo tshaj los pab koj kom dim ntawm cov kev ntxhov siab thiab cov ntawv tsis txaus siab. 

 

 

  • Extraordinary Harmonics Lim Muaj peev xwm

 

Qhov loj tshaj feature ntawm no siab zog low pass lim yog nws harmonic attenuation peev xwm - raws li cov ntaub ntawv xeem txhim khu kev qha ntawm FMUSER pawg xeem, qhov thib ob harmonic attenuation thiab siab dua harmonic attenuation ntawm no 10kW low pass RF lim tau mus txog feem ≥ 35 dB thiab ≥ 60 dB, uas yog qhov muaj zog sib haum xeeb lim dej rau lub chaw nres tsheb xov tooj cua. 

 

  • Ntxiv-Low Insertion Poob

 

cov qis insertion poob ntawm FMUSER 10kW FM low pass filter ua rau nws tsim nyog rau qib zog txog li 10000 watts, uas txhais tau hais tias nrog lub lim RF zoo kawg no, koj tuaj yeem ua ke siv ntau lub xov tooj cua transmitters nrog lub zog sib txawv hauv xov tooj cua, thiab cov neeg tuaj saib tuaj yeem tau txais xov tooj cua nrog rau zoo tshaj plaws thiab considerably tsawg harmonics! Connector: 3 1/8 "siab tshaj tawm tswv yim zog 10kw

 

  • Kev paub siv zoo tshaj plaws

 

Lub 10kW Low Pass lim rau muag, ua-nyob rau hauv nrog ib qho yooj yim txuas system, tshwj xeeb tshaj yog tsim rau FM xov tooj cua chaw nres tsheb. Xav txog qhov zoo tshaj plaws cov neeg siv kev paub, lub lim dej ua kom yooj yim kev koom ua ke rau hauv FM transmitters.

 

FMUSER muab cov kab tiav ntawm cov FM thiab UHF / VHF lim rau harmonics suppression nyob rau hauv xov tooj cua tshaj tawm cov chaw nres tsheb. 

 

Kev hais lus thoob ntiaj teb, peb xav pab cov neeg ua haujlwm hauv xov tooj cua los ntawm thoob plaws lub ntiaj teb kom cais cov xov tooj cua FM sib ze, peb pom tias qee qhov ntawm lawv muaj kev txaus siab rau kev sib txuas ntau lub FM zaus ntawm ib tus kav hlau txais xov, lwm tus xav kom muaj kev cai siv. rau lawv ntau transmitters nyob rau hauv lawv cov chaw nres tsheb. 10kW FM low pass filter, piv txwv li, yog ib qho ntawm peb qhov zoo tshaj plaws-muag FM harmonics lim siv rau combing FM xov tooj cua transmitters zog mus txog 10kW, tej zaum koj yuav pom tus txiv leej tub loj no nyob rau hauv ib co loj xov tooj cua FM.

 

Peb yeej ib txwm mloog koj qhov kev xav tau yog tias koj txaus siab rau ib qho ntawm peb cov khoom muag saum toj kawg nkaus RF harmonics lim. 

 

Xav tias koj xav tau ntau tshaj qhov koj pom

 

Raws li peb tau hais los saum no, peb yog ib qho zoo tshaj plaws xov tooj cua chaw nres tsheb khoom manufacturers nyob rau hauv lub ntiaj teb no cheeb tsam, dua li cov 10kW low pass RF lim, koj kuj tuaj yeem ntsib lwm tus Kev muag khoom zoo tshaj plaws RF lim hauv cov ntsiab lus hauv qab no. Zoo, zoo zoo thiab nyiaj txiag nqi raws li ib txwm.

 

Daim ntawv A. FM/VHF LPF Tsawg Pass Lim rau muag

 

Tom ntej no yog 10kW VHF Bandreject Filter VHF BSF Bandstop Lim flos yog Muag | Hla

 

Classification qauv Max. Tswv yim fais fab VSWR

Zaus ntau yam

Kev Tiv Thaiv

  2nd harmonic

  3rd harmonic

connectors Mus saib ntxiv
FM A 20 kW

1.1

87 - 108 MHz

35 dB

60 dB

3 1 / 8 "

ntau
VHF B 10 kW

1.1

167 - 223 MHz

 35 dB

60 dB

3 1 / 8 "

ntau

 

Daim duab B. 10kW VHF BSF Bandstop Bandreject Lim kev muag khoom

 

Tus Previous yog FM/VHF LPF Low Pass Lim rau muag | Hla

Tom ntej no yog 350W UHF DTV BPF Bandpass Lim kev muag khoom | Hla

 

Classification qauv Max. Tswv yim fais fab VSWR fv f0 ± 4MHz
Zaus ntau yam

Kev Tiv Thaiv

fv-4.43 ± 0.2 MHz

connectors Mus saib ntxiv
VHF A 10 kW ≤ 1.1
≤ 1.1

167 - 223 MHz

20 dB

3 1 / 8 " ntau

 

Daim ntawv C. 350W UHF DTV BPF Bandpass Lim rau muag

 

Tus Previous yog 10kW VHF BSF Bandstop Bandreject Lim kev muag khoom | Hla

Tom ntej no yog FM BPF Bandpass Lim kev muag khoom | Hla

 

Classification qauv Max. Tswv yim fais fab Kab noj VSWR zoo tsis f0
f0 ± 3.8MHz
f0 ± 4.2MHz
f0 ± 6MHz
f0 ± 12MHz
Mus saib ntxiv
UHF
A
350W
6

 1.15

474 MHz

0.50 dB

1.3dB ib

8 dB

20 dB

40 dB

ntau

858 MHz

 0.60 dB

1.65 dB

 8 dB

20 dB

40 dB

ntau

 

Daim duab D. FM BPF Bandpass Lim kev muag khoom

 

Tus Previous yog 350W UHF DTV BPF Bandpass Lim kev muag khoom | Hla

Tom ntej no yog VHF BPF Bandpass Lim kev muag khoom | Hla

 

Classification qauv Max. Tswv yim fais fab Kab noj VSWR

Zaus ntau yam

zoo tsis

f0

f0 ± 300kHz

f0 ± 2MHz

f0 ± 4MHz

connectors Mus saib ntxiv
FM A 500W

3

 1.1

87 - 108 MHz

0.70 dB

0.75 dB

≥ 25 dB cov

≥ 40 dB cov

7-16 IB

ntau
FM A1 500W

4

 1.1

87 - 108 MHz

1.10 dB

1.20 dB

≥ 40 dB cov

≥ 60 dB cov

7-16 IB

ntau
FM A

1500W

1.5 kWm

3

 1.1

87 - 108 MHz

zoo tsis

0.30 dB

0.35 dB

≥ 25 dB cov

≥ 40 dB cov

7-16 IB

ntau
FM A1

1500W

1.5 kWm

4

 1.1

87 - 108 MHz

0.50 dB

0.60 dB

≥ 40 dB cov

≥ 60 dB cov

7-16 IB

ntau
FM A

3000W

3 kWm

3

 1.1

87 - 108 MHz

zoo tsis

0.25 dB

0.30 dB

≥ 25 dB cov

≥ 40 dB cov

1 5 / 8 "

ntau
FM A1

3000W

3 kWm

4

 1.1

87 - 108 MHz

0.40 dB

0.45 dB

 40 dB

≥ 60 dB cov

1 5 / 8 "

ntau
FM A

5000W

5 kWm

3

 1.1

87 - 108 MHz

zoo tsis

0.20 dB

0.25 dB

 25 dB

≥ 40 dB cov

1 5 / 8 "

ntau
FM A1

5000W

5 kWm

4

 1.1

87 - 108 MHz

0.35 dB

0.40 dB

≥ 40 dB cov

≥ 60 dB cov

1 5 / 8 "

ntau
FM A

10000W

10 kWm

3

 1.1

87 - 108 MHz

zoo tsis

0.15 dB

0.15 dB

≥ 25 dB cov

≥ 40 dB cov

3 1 / 8 "

ntau
FM A1

10000W

10 kWm

4

 1.1

87 - 108 MHz

0.25 dB

0.30 dB

 40 dB

≥ 60 dB cov

3 1 / 8 "

ntau

 

Chart E. VHF BPF Bandpass Lim rau Muag

 

Tus Previous yog FM BPF Bandpass Lim kev muag khoom | Hla

Rov los FM/VHF LPF Low Pass Lim rau muag | Hla

 

Classification qauv Max. Tswv yim fais fab Kab noj VSWR

Zaus ntau yam

zoo tsis

f0

f0 ± 300kHz

f0 ± 2MHz

f0 ± 4MHz

connectors Mus saib ntxiv
VHF A 500W

4

 1.1

167-223 MHz

0.40 dB

0.50 dB

≥ 20 dB cov

≥ 35 dB cov

7-16 IB

ntau
VHF A1 500W

6

 1.1

167-223 MHz

0.80 dB

1.00 dB

≥ 50 dB cov

≥ 70 dB cov

7-16 IB

ntau
VHF A

1500W

1.5 kWm

4

 1.1

167-223 MHz

zoo tsis

0.15 dB

0.20 dB

≥ 20 dB cov

≥ 35 dB cov

1 5 / 8 "

ntau
VHF A1

1500W

1.5 kWm

6

 1.1

167-223 MHz

0.25 dB

0.30 dB

≥ 50 dB cov

≥ 70 dB cov

1 5 / 8 "

ntau
VHF A

3000W

3 kWm

3

 1.1

167-223 MHz

zoo tsis

0.10 dB

0.15 dB

≥ 10 dB cov

≥ 20 dB cov

1 5 / 8 "

ntau
VHF A1

3000W

3 kWm

4

 1.1

167-223 MHz

0.20 dB

0.25 dB

≥ 20 dB cov

≥ 35 dB cov

1 5 / 8 "

ntau
VHF A

5000W

5 kWm

3

 1.1

167-223 MHz

zoo tsis

0.10 dB

0.10 dB

≥ 10 dB cov

≥ 20 dB cov

1 5 / 8 "

ntau
VHF A1

5000W

5 kWm

4

 1.1

167-223 MHz

0.15 dB

0.20 dB

≥ 20 dB cov

≥ 35 dB cov

1 5 / 8 "

ntau
VHF A

10000W

5 kWm

3

 1.1

167-223 MHz

zoo tsis

0.10 dB

0.10 dB

≥ 10 dB cov

≥ 20 dB cov

3 1 / 8 "

ntau
VHF A1

10000W

5 kWm

4

 1.1

167-223 MHz

0.15 dB

0.20 dB

≥ 20 dB cov

≥ 35 dB cov

3 1 / 8 "

ntau

 

Yuav RF Harmonics Lim rau Xov Tooj Cua? Nov yog Qhov Chaw Zoo!

 

FMUSER yog ib qho zoo tshaj plaws RF lim manufacturers uas tsim harmonics lim rau muag nyob ze 200+ lub teb chaws thiab cheeb tsam thoob plaws ntiaj teb, ntawm no yog cov teb chaws uas koj tuaj yeem siv tau.

 

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua thiab Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia thiab Herzegovina, Bots , Brazil, Brunei, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cambodia, Cameroon, Canada, Central African koom pheej, Chad, Chile, Tuam Tshoj, Colombia, Comoros, Congo, Democratic Republic of the, Congo, Republic of the, Costa Rica , Côte d'Ivoire, Croatia, Cuba, Cyprus, Czech koom pheej, Denmark, Djibouti, Dominica, Dominican koom pheej, East Timor (Timor-Leste), Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini, Ethiopia, Fiji, Finland, Fabkis, Gabon, Gambia, Georgia, Lub Tebchaws Yelemees, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel , Ltalis, Jamaica, Nyiv, Jordan, Kazakhstan, Kenya, Kiribati, Kauslim Teb, Kaus Lim Qab Teb, Kosovo, Kuwait,Kyrgyzstan, Laos, LATVia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Federated States of, Moldova, , Mongolia, Montenegro, Morocco, Mozambique, Myanmar (Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts thiab Nevis, Saint Lucia, Saint Vincent thiab Grenadines, Samoa, San Marino, Sao Tome thiab Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, Spain, Sri Lanka, Sudan, Sudan, Sab Qab Teb, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thaib, Togo, Tonga, Trinidad thiab Tobago , Tunisia, Qaib ntxhw, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab E Mirates, United Kingdom, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Nyab Laj, Yemen, Zambia, Zimbabwe

 

Peb Ib txwm nyob ntawm no rau koj cov kev xav tau

 

Puas yog koj tseem xav txog cov RF harmonics lim tus nqi? Peb tsim thiab tsim cov peev nyiaj thiab pheej yig harmonics lim rau xov tooj cua chaw nres tsheb, los ntawm LPF low pass filters rau bandstop filters thiab FM / UHF / VHF bandpass lim, thiab lwm yam

 

Sau nyob rau hauv daim ntawv "Hu rau peb" nyob rau sab laug thiab qhia rau peb paub koj cov specifications xav tau, ib qho ntawm peb cov kev paub txog kev muag khoom yuav teb tam sim ntawd thiab pab xaiv ib qho FM/TV harmonics lim uas ua tau raws li qhov koj xav tau, tshwj xeeb tshaj yog rau cov lus nug zoo li cov khoom muag qis tshaj plaws rau kev muag khoom, bandpass lim customization, ua tiav lim turnkey tov, thiab lwm yam. Zoo, cov lus nug ib txwm muaj xws li nqe, lub sijhawm xa khoom, lossis specs tseem nug tau dawb. Hais qhov koj xav tau, Peb ib txwm mloog.

 

▲ Zoo tshaj RF Harmonics Lim rau Muag  ▲

▲ Rov qab mus rau Cov Ntsiab Lus

 

Yuav ua li cas xaiv qhov zoo tshaj plaws FM Harmonics Lim rau Xov Tooj Cua Chaw Nres Tsheb?

 

Previous Part yog Zoo tshaj RF Harmonics Lim rau Muag | Hla

Qhov Tom ntej no yog Nthuav qhov tseeb thiab Q&A txog RF Lim Hla

 

Ib txhia ntawm peb cov neeg muaj kev tsis ntseeg zoo li, Kuv tsis paub tiag tiag yuav xaiv qhov zoo li cas RF harmonics lim, los yog kuv xav tau ob hom harmonics lim tab sis kuv tsuas muaj 50K$ rau kev yuav, thiab lwm yam.

 

Raws li kev tshawb fawb txog kev lag luam zoo ntawm FMUSER harmonics lim, peb pom tias cov khoom muag saum toj kawg nkaus RF harmonic lim muaj cov yam ntxwv hauv qab no sib xws:

 

1. Ntau yam lim Customization thiab OEM txais tos

 

Kev hloov kho thiab tsim cov lim dej qhia txog kev muaj tswv yim ntawm cov khoom siv tshaj tawm hauv xov tooj cua thiab kev ua tau zoo ntawm cov khoom siv tshaj tawm. Ib qho zoo heev RF harmonics lim yuav tsum muaj cov yam ntxwv ntawm cov nqi siv nyiaj, kev pab lub neej ntev. FMUSER 10kW FM low-pass lim tshwm sim kom yooj yim-siv thiab tus nqi-phooj ywg rau cov neeg ua haujlwm hauv xov tooj cua

 

2. Muaj tsawg kawg yog 1 PCS Tsim thiab Kev Pabcuam Kev Cai

 

Tsim thiab kho qhov kev pabcuam yog muab rau qhov tsawg kawg nkaus ntawm 1 pcs Lim. Vim tias cov neeg siv xov tooj cua sib txawv yuav tsum tau ntsib qhov xav tau tiag tiag ntawm ntau lub xov tooj cua, txawm tias tus neeg xa khoom lim RF tuaj yeem hloov kho thiab tsim cov ntxaij lim dej tau dhau los ua ib qho ntawm cov qauv los ntsuas lub peev xwm ntawm cov neeg xa khoom lim. Vim li cas FMUSER tsuas yog sawv tawm los ntawm ntau tus neeg xa khoom lim dej feem ntau vim tias lawv cov lim RF tuaj yeem hloov kho, ua haujlwm siab, tus nqi siv nyiaj, thiab siv tau yooj yim. Tsis muaj teeb meem ntau npaum li cas cov ntxaij lim dej siab kawg uas koj xav kho, FMUSER tuaj yeem ua haujlwm rau koj ib txwm

 

3. RF Harmonics Lim Kev Yuav Khoom los ntawm FMUSER

 

Yuav xaiv li cas Sab saum toj RF harmonics lim ntawm cov khoom siv hauv xov tooj cua hauv lub xyoo 2021 tau yog qhov teeb meem xav tau rau ntau tus neeg siv khoom FMUSER tshiab thiab qub.

 

Tom qab txoj kev tshawb fawb ntawm peb pab neeg ua haujlwm, peb pom tias qee qhov kev ua haujlwm tseem tuaj yeem pab koj xaiv, peb kuj koom nrog hauv kev ua si, mob siab los muab peb cov lim dej zoo tshaj plaws rau koj, yog li, yog tias koj xav tau. RF harmonic lim rau muag los yog xav tau tej ntaub ntawv hais txog qhov tseeb harmonic filters nqi los ntawm FMUSER, thov paub qhov ntawd Peb ib txwm mloog!  

 

  • Qhov qis dua Pim lub zog lub teeb liab

 

Piv txwv li, PIM (AKA: Passive Intermodulation), peb paub tias PIM yog qhov tshwm sim ntawm cov teeb meem tsis muaj txiaj ntsig uas tsim los ntawm kev sib xyaw ntawm ob lossis ntau zaus hauv cov khoom siv tsis muaj kab mob. Cov teeb liab tshiab no yuav cuam tshuam thiab cuam tshuam cov teeb liab thawj kis ntawm ob lub tshuab wireless. Nws tuaj yeem tsim teeb liab cuam tshuam hauv txhua qhov system wireless. Tsawg PIM txhais tau hais tias muaj lub teeb liab muaj zog nrog ntau bandwidth rau cov neeg siv ntau dua, uas txhais tau tias cov neeg siv khoom txaus siab thiab cov nyiaj tau los ntau dua rau cov neeg siv khoom.

 

  • Koj yuav xav tau qis Insertion poob thiab rov qab poob

 

Insertion poob thiab rov poob ua lub luag haujlwm tseem ceeb hauv kev tsim thiab tsim cov khoom siv ntau zaus xws li RF lim, RF fais fab faib, thiab RF amplifiers. Nws yog ib qho tshwm sim uas tshwm sim hauv txhua hom kev sib kis (cov ntaub ntawv xa mus lossis hluav taws xob xa mus). Txij li qhov no muaj tseeb rau yuav luag tag nrho cov kab sib kis ntawm lub cev lossis txoj kev coj mus, qhov ntev ntawm txoj kev, qhov poob siab dua. Tsis tas li ntawd, cov kev poob no tseem yuav tshwm sim ntawm txhua qhov kev sib txuas ntawm kab, nrog rau cov pob qij txha thiab cov khoom sib txuas. Rau kev sib sau ua ke ntau zaus xws li RF lim, cov lim dej uas tsis muaj qhov tsis zoo thiab lwm cov ntsiab lus muag zoo nkauj feem ntau tuaj yeem yog thawj qhov kev xaiv rau cov neeg siv xov tooj cua.

 

  • Nws yog ntau tshaj qhov koj pom

 

Pom tau tias, muaj cov ntaub ntawv tseem ceeb ntau dua li Insertion poob, lwm yam tsis xws li cov nqi sib txuas thiab kev tuav lub zog siab, thiab lwm yam kuj tseem yog ib qho tseem ceeb thaum yuav lub lim zoo RF harmonics. Yog tias koj xav tau cov ntaub ntawv pub dawb ntxiv txog RF harmonics lim, thov hu rau peb cov kws tshaj lij, lawv yog 7/24 online tos koj cov xov xwm zoo. Nov yog qhov pab pawg kws tshaj lij FMSUER qhia:

 

  • Kev txo qis lim qhov ntev nrog tus nqi sib tw Cov khoom zoo meej rau ntau hom xov tooj cua microwave zaus, xws li Telecommunication system, IEEE 802.
  • Zoo kub stability
  • High zog tuav thiab zoo heev attenuation tus nqi
  • Etc.

 

Rau Kev Tiv Thaiv FM Chaw Nres Tsheb Transmitter Harmonics: FM transmitters feem ntau tsim kom muaj kev sib haum xeeb - ntau ntawm cov zaus transmitter. Qee qhov no ua rau cuam tshuam rau VHF-TV thiab UHF-TV txais tos thiab paging thiab xov tooj cua txais xov tooj ntawm tes. Qhov no series ntawm cov ntxaij lim dej uas tsis tshua muaj dhau tag nrho FM band nrog qhov poob qis thiab muab kev sib haum xeeb ntau heev.

 

▲ Yuav ua li cas xaiv qhov zoo tshaj plaws FM Harmonics Lim ▲

▲ Rov qab mus rau Cov Ntsiab Lus ▲

 

Nthuav qhov tseeb thiab Q&A txog RF Lim

 

Previous Part yog Yuav ua li cas xaiv qhov zoo tshaj plaws FM Harmonics Lim Hla

Rov qab mus rau Thawj Ntu Qhov twg yuav qhov zoo tshaj plaws FM Low Pass Lim | Hla

 

Yog tias koj xav paub ntau ntxiv txog cov qauv hauv Circuit Court lossis kev lag luam sib koom ntawm RF lim, FMUSER xav kom koj kawm txog cov khoom siv hluav taws xob tsis zoo lossis nug peb pawg neeg muag khoom ncaj qha, vim tias cov ntsiab lus koj tau nyeem tsis txaus los piav qhia RF lim kom meej thiab meej rau koj. (PS: Wikipedia tej zaum yuav ua tsis tau). Yog li ntawd, txhua yam peb ua tau rau koj yog kom yooj yim thiab vividly piav txog cov qauv thiab hom RF lim, thiab yuav ua li cas RF lim ua haujlwm. Ntawm no, FMUSER teev qee cov lus nug nthuav txog RF Lim uas tau tsa los ntawm peb cov neeg siv khoom hauv xov tooj cua, thiab tau kawg peb cov lus teb. Thov nyeem ntxiv Yog tias koj xav paub ntau ntxiv txog RF lim. 

 

Q1: Yuav ua li cas RF lim ua hauj lwm lwm txoj kev tshwj tsis yog nyob rau hauv FM / TV chaw nres tsheb?

 

RF Lim yog cov khoom tseem ceeb hauv kev siv tshuab wireless, RF lim tau siv nrog lub xov tooj cua txais xov tooj cua kom tsuas yog hom frequencies thiaj li muaj kev lom zem thaum lim tawm lwm qhov tsis xav tau ntawm ntau zaus. RF cov ntxaij lim dej yog tsim los rau hauv ib txoj hauv kev uas lawv tuaj yeem ua haujlwm tau yooj yim ntawm ntau zaus uas muaj xws li megahertz thiab gigahertz. Vim nws cov yam ntxwv ua haujlwm, nws feem ntau siv hauv cov khoom siv xws li xov tooj cua tshaj tawm, kev sib txuas lus wireless, thiab TV, thiab lwm yam.

 

RF cov ntxaij lim dej tuaj yeem lim tawm cov suab nrov lossis txo qhov cuam tshuam ntawm cov teeb liab sab nraud uas tuaj yeem cuam tshuam qhov zoo lossis kev ua haujlwm ntawm txhua qhov kev sib txuas lus. Qhov tsis muaj cov ntxaij lim dej RF tsim nyog nyob rau hauv qhov chaw tuaj yeem ua rau muaj kev cuam tshuam rau kev hloov pauv ntawm cov teeb liab zaus uas tuaj yeem ua rau mob rau txoj kev sib txuas lus.

 

Nrog rau txoj cai RF lim nyob rau hauv qhov chaw, kev cuam tshuam sab nraud nrog rau cov teeb liab cuam tshuam uas tsim los ntawm cov neeg nyob sib ze sib txuas lus tuaj yeem cuam tshuam tau yooj yim. Qhov no khaws cia qhov zoo ntawm qhov xav tau teeb liab frequencies thaum lim tawm tag nrho cov teeb liab tsis xav tau nrog yooj yim.

 

Vim li no, RF cov ntxaij lim dej ua lub luag haujlwm tseem ceeb hauv kev sib txuas lus wireless, xws li satellite, radar, mobile wireless system, thiab lwm yam. 

 

Feem ntau, cov ntxaij lim dej yog lub teeb yuag thiab tuaj yeem pab txhawb kev ua haujlwm ntawm lub teeb liab zaus. Nyob rau hauv rooj plaub uas RF cov ntxaij lim dej ua tsis tau raws li qhov yuav tsum tau ua, koj tuaj yeem tshawb xyuas ntau yam kev xaiv, ib qho ntawm qhov sib ntxiv ntawm lub amplifier rau koj tus qauv tsim. Los ntawm Trellisware amplifier mus rau lwm yam RF fais fab amplifiers, koj tuaj yeem hloov cov teeb liab qis dua mus rau qhov siab dua; yog li boosting tag nrho cov kev ua tau zoo ntawm RF tsim.

 

Tsis tas li ntawd, RF cov ntxaij lim dej ua lub luag haujlwm tseem ceeb hauv lub xov tooj ntawm tes ib puag ncig. Thaum nws los txog rau mobiles, lawv xav tau ib tug npaum li cas ntawm bands ua tau zoo. Nrog rau qhov tsis muaj RF lim kom zoo, ntau lub bands yuav tsis raug tso cai nyob ua ke ib txhij, uas txhais tau hais tias qee lub bands yuav raug tsis lees paub, piv txwv li Ntiaj Teb Kev Tshawb Fawb Satellite System (GNSS), pej xeem kev nyab xeeb, Wi-Fi, thiab ntau dua. Ntawm no, RF cov ntxaij lim dej ua lub luag haujlwm tseem ceeb los ntawm kev tso cai rau txhua pawg sib koom ua ke nyob rau tib lub sijhawm.

 

Ua tsaug rau kev loj hlob R&D kev loj hlob ntawm FMUSER, peb npog ntau ntau cov ntxaij lim dej sib txawv rau koj, thov nco ntsoov tiv tauj peb pab pawg muag khoom Yog tias koj tsis paub tseeb tias qhov twg yog qhov zoo tshaj plaws rau koj qhov chaw tshaj tawm xov xwm, peb cov neeg muag khoom thiab cov kws tshaj lij yuav tos Nrog txhua pob ntseg.

 

Q2: Koj Yuav Ua Li Cas RF Lim?

 

Feem ntau, RF cov ntxaij lim dej yog tsim los ntawm kev sib txuas ntawm cov resonators thiab tsim nrog cov khoom siv hluav taws xob tsis zoo xws li capacitors, inductors, thiab (tsawg zaus) RF transformers, uas yog cov sib txuas inductors. Cov lim dej feem ntau yog linear, thiab thaum nws xav tau qee yam kev nthuav dav lawv tuaj yeem ua ke nrog RF amplifiers siv nrog RF transistors (xws li bipolar lossis field-effect). Cov lim dej yog qhov tsim nyog thaum nws los lim tawm cov cim tsis xav tau los ntawm kev nkag mus rau hauv xov tooj cua spectrum. Lawv siv ua ke nrog ntau yam khoom siv hluav taws xob. Txawm li cas los xij, nws qhov tseem ceeb tshaj plaws yog siv los ntawm lub xov tooj cua zaus.

 

Rau cov lim dej qis, nws cov Circuit Court uas tso cai rau cov khoom siv tsawg dhau thiab thaiv tag nrho lwm cov khoom siv ntau zaus hu ua low pass filter. Lub npe LPF nws tus kheej qhia qhov tsawg zaus.

 

Raws li daim ntawv thov thiab qhov loj ntawm cov khoom siv wireless, muaj ntau hom lim, xws li kab noj hniav lim dej, cov lim dej lim dej, cov lim dej electroacoustic, cov lim dej dielectric, cov lim coaxial (tsis hais txog coaxial cable), thiab lwm yam.

 

FMUSER yog cov chaw tsim khoom lag luam RF harmonics lim. Peb muaj cov cuab yeej tshaj lij tshaj lij tshaj tawm xov xwm kev paub tshwj xeeb thiab pab pawg ua haujlwm. Yog tias koj muaj lus nug txog RF lim thaum nyeem qhov kev qhia no, zoo siab txais tos nug peb pab neeg technical rau kev txhawb nqa.

 

Q3: Muaj pes tsawg hom RF lim muaj thiab lawv yog dab tsi?

 

Xov tooj cua Frequency filters yog ib yam tshwj xeeb ntawm Circuit Court uas tso cai rau cov teeb liab kom dhau thaum lawv tshem tawm cov teeb liab uas tsis xav tau. Thaum nws los txog rau lub lim topology, muaj plaub yam yooj yim RF lim hom, piv txwv li; siab dhau; band-pass; thiab band-reject (los yog notch filters). Cov lim dej RF feem ntau muaj cov qauv ntaiv, thiab "txoj hauj lwm" ntawm cov khoom (inductors thiab capacitors) yog qhov txhais lawv hom; qhov tseem ceeb ntawm cov khoom txhais tau hais tias qhov ntau ntawm cov teeb liab zaus (es) lawv thaiv lossis tsis thaiv.

 

  • Low Pass Filter - Lowpass Lim - LPF

 

Cov lim dej qis yog qhov uas tsuas yog tso cai rau cov zaus tsawg dhau los ntawm tib lub sijhawm, txo qis txhua lwm cov teeb liab zaus. Qhov kev txo qis ntawm cov teeb liab zaus thaum nws dhau los ntawm bandpass yog txiav txim siab los ntawm ntau yam xws li lim topology, layout, thiab zoo ntawm cov khoom, thiab lwm yam. Tsis tas li ntawd, lub lim topology kuj txiav txim siab sai npaum li cas cov lim yuav hloov ntawm lub passband thiaj li mus cuag nws qhov kawg tsis lees paub.

 

 

LPF 

Low pass filters tuaj nyob rau hauv ntau yam sib txawv. Daim ntawv thov tseem ceeb ntawm cov lim dej no yog kev tawm tsam ntawm RF amplifier's harmonics. Cov yam ntxwv no tseem ceeb heev vim tias nws pab tiv thaiv kev cuam tshuam tsis zoo thaum nws los txog rau ntau yam kev sib kis. Feem ntau, cov ntxaij lim dej qis dhau yog siv hauv cov ntawv thov suab thiab lim tawm suab nrov los ntawm ib qho chaw sab nraud. Tom qab lub high-frequency signals raug lim, lub resulting teeb liab frequencies tau ib tug crisp thiab meej zoo.

 

  • High Pass Filter - Highpass Lim - HPF

 

Raws li qhov tsis zoo ntawm cov lim dej qis, qhov siab dhau lim (HPF) tsuas yog tso cai rau lub teeb liab ntau dhau los. Qhov tseeb, cov ntxaij lim dej siab dhau yog qhov ua tau zoo heev rau cov lim dej qis qis vim tias ob qho tib si tuaj yeem siv ua ke los tsim cov lim bandpass. Tus tsim ntawm lub siab pass lim yog ncaj nraim thiab attenuates lub frequencies uas yog qis dua ib tug pib point.

 

 

HPF 

Feem ntau, cov ntxaij lim dej siab dhau yog siv nyob rau hauv lub tshuab suab los ntawm txhua qhov qis zaus raug lim tawm. Tsis tas li ntawd, nws yog siv los tshem tawm cov ntses bass thaj tsam hauv cov neeg hais lus me me, thiab ntau zaus; cov ntxaij lim dej no tshwj xeeb tsim rau hauv cov neeg hais lus. Txawm li cas los xij, yog tias nws los txog rau ib txoj haujlwm DIY, cov lim dej siab dhau tuaj yeem yooj yim xaim rau hauv qhov system.

 

  • Band Pass Filter - Bandpass Lim - BPF

 

Lub bandpass lim (BPF) yog ib lub voj voog uas tso cai rau cov teeb liab los ntawm ob qhov sib txawv ntawm qhov sib txawv kom dhau mus thiab txo cov teeb liab uas tsis tuaj nyob rau hauv nws qhov kev lees paub. Feem ntau ntawm cov lim lim bandpass nyob ntawm txhua qhov chaw siv hluav taws xob sab nraud thiab siv cov khoom siv hluav taws xob, piv txwv li kev sib xyaw ua ke thiab cov transistors. Cov lim zoo li no yog hu ua active bandpass filters. Ntawm qhov tod tes, qee qhov band hla cov lim siv tsis muaj lub zog hluav taws xob sab nraud thiab vam khom rau cov khoom siv tsis zoo, piv txwv li inductors thiab capacitors. Cov lim no hu ua passive bandpass filters.

 

 

Band pass lim yog feem ntau siv hauv wireless receivers thiab transmitters. Nws lub luag haujlwm tseem ceeb hauv lub tshuab xa hluav taws xob yog txwv tsis pub cov teeb liab tso tawm bandwidth mus rau qhov tsawg kawg nkaus kom cov ntaub ntawv tsim nyog tuaj yeem xa tawm ntawm qhov xav tau ceev thiab daim ntawv. Thaum nws los txog rau lub receiver, lub band pass lim tso cai tsuas yog ib tug txaus tus nqi ntawm frequencies yuav tsum tau decoded los yog hnov, thaum txiav lwm yam teeb liab los ntawm pliaj frequencies.

 

GMP

 

Tag nrho cov nyob rau hauv tag nrho, thaum lub bandpass lim tau zoo tsim, nws tuaj yeem yooj yim ua kom zoo tshaj plaws ntawm cov teeb liab, thaum tib lub sijhawm, nws tuaj yeem txo qhov kev sib tw lossis cuam tshuam ntawm cov teeb liab.

 

  • Band Reject Filter - Band Stop Filter - Reject Filter - BSF

 

Qee lub sij hawm hu ua band nres lim (BSF), band tsis lees paub yog lub lim uas tso cai rau feem ntau ntawm cov zaus dhau los ntawm qhov tsis hloov pauv. Txawm li cas los xij, nws attenuates xws frequencies uas poob qis dua ib qho tshwj xeeb. Nws ua haujlwm raws nraim li qhov tsis sib xws rau ntawm lub lim bandpass.

 

 

Yeej, nws txoj haujlwm yog dhau los ntawm cov zaus ntawm xoom mus rau thawj qhov kev txiav tawm ntawm zaus. Nyob rau hauv nruab nrab, nws dhau tag nrho cov frequencies uas yog siab tshaj qhov thib ob txiav-tawm point ntawm zaus. Txawm li cas los xij, nws tsis lees paub lossis thaiv tag nrho lwm cov zaus uas nyob nruab nrab ntawm ob lub ntsiab lus no.

 

BSF 

Txhua yam nyob rau hauv tag nrho, lub lim yog ib yam dab tsi uas tso cai rau cov teeb liab hla nrog kev pab los ntawm passband. Uas tau hais tias, qhov nres nres hauv lub lim yog qhov chaw uas qee zaus raug tsis lees paub los ntawm cov lim dej. Txawm hais tias nws yog high pass, low pass, los yog bandpass, lub zoo tagnrho lim yog ib qho uas tsis muaj kev poob rau hauv passband. Txawm li cas los xij, hauv kev muaj tiag, tsis muaj qhov zoo tshaj plaws lim zoo li lub bandpass yuav ntsib qee zaus poob thiab nws tsis muaj peev xwm ua kom muaj kev tsis lees paub tsis kawg thaum nws los txog rau qhov nres.

 

Nthuav qhov tseeb txog RF Lim ▲

Rov qab mus rau Cov Ntsiab Lus

 

  • 10kW FM Low Pass Lim x 1PCS 

 

Thov hu rau peb kom paub ntxiv

  1. Yam Koj Yuav Tsum Paub Txog 10kW FM Low Pass Lim
  2. Hluav taws xob ntsuas ntawm FMUSER 10kW Low Pass Lim (Reference nkaus xwb)
  3. Ntxiv Qhia rau xov tooj cua cuam tshuam

 
Yam Koj Yuav Tsum Paub Txog 10kW FM Low Pass Lim

 

Qhov Tom ntej no yog Hluav taws xob ntsuas ntawm FMUSER 10kW Low Pass Lim Hla

 

Geez, muaj ntau yam koj yuav tsum tau them sai sai rau! Txawm li cas los xij, raws li tus neeg siv xov tooj cua, koj yeej paub ntau dua li FMUSER ua, tab sis ntawm no, txhawm rau tiv thaiv thiab txhim kho koj cov khoom siv hauv xov tooj cua, FMUSER tseem yuav tsum tau muab peb cov lus qhia rau koj, tom qab koj yuav qhov no 10kW FM low pass filter , peb yam koj yuav tsum paub: kev ua haujlwm, kev teeb tsa, thiab cable TV.

 

1. Kev ua haujlwm ntawm RF Lim

 

Qhov lim dej qis no yog tsim los txo qis thiab feem ntau tshem tawm kev cuam tshuam hauv TV los ntawm kev sib haum xeeb ntawm lub zog tsim hauv FM transmitters.

 

Lub lim yog bi-directional lub ntsiab lus nws tuaj yeem ntsia tau rau hauv ob qho tib si. 10kW FM transmitter lim qauv A nthuav tawm qhov txo qis rau cov zaus siab tshaj 140 MHz raws li qhia hauv cov lus teb nkhaus hauv qab no.

 

 

TSAB NTAWV CEEB TOOM: Lub teeb liab input rau 10kW lim yuav tsum tsis pub tshaj 10000 watts. Kev siv lub zog siab dua tuaj yeem ua rau lub lim dej tas mus li thiab yuav ua rau tsis muaj qhov lav.

 

2. Kev teeb tsa ntawm RF Lim

 

  • Lub lim yuav tsum tau ntsia kom ze rau qhov tso zis ntawm lub transmitter raws li qhov ua tau zoo 
  • Siv 3 1/8 "EIA connectors nrog txiv neej connectors ntawm ob kawg.

 

CEEV FAJ: Lub lim tuaj yeem kub thaum ua haujlwm, qhov no yog qhov qhia tau tias nws ua nws txoj haujlwm los ntawm dissipating harmonic zog nyob rau hauv daim ntawv ntawm tshav kub.

 

3. Kev tsis txaus siab los ntawm Koj Lub Zej Zog Cable TV

 

Yog tias koj lub transmitter cuam tshuam nrog lub cable TV qhov teeb meem yuav tsis daws tau los ntawm kev siv lub lim dej qis. Qee lub tuam txhab cable uas tsis nqa FM channel ntawm lawv lub cev tuaj yeem tso TV raws hauv FM tshaj tawm band. Yog tias qhov no tshwm sim, koj qhov zaus zaus (tus neeg nqa khoom) yuav ua rau muaj kev cuam tshuam thiab cov lim dej yuav tsis ua haujlwm. Hu rau koj lub tuam txhab cable hauv zos kom paub ntau ntxiv. Qee lub sij hawm, lub tuam txhab cable tuaj yeem daws qhov teeb meem los ntawm kev hloov cov qub los yog cov khoom siv cable.

 

Hluav taws xob ntsuas ntawm FMUSER 10kW Low Pass Lim (Reference nkaus xwb)

 

  • Qhov zoo tshaj plaws tooj liab thiab nyiaj-plated tooj dag cov khoom, cov neeg siv kev paub tau cog lus tseg
  • Tsawg kawg Length
  • Tag nrho FM Band Kev Pabcuam
  • Rugged Built-in Couplers Muaj
  • Tsis tshua muaj Insertion poob thiab VSWR
  • Muaj ntau qhov sib txawv muaj nyob rau xaiv, uas txhim kho qhov muaj peev xwm tshaj tawm
  • Cov qib fais fab sib txawv ua tau raws li qhov xav tau ntawm ntau qhov xwm txheej
  • Kev lag luam-ua theem ntawm qhov qis qis qis thiab VSWR txhim kho qhov kev tshaj tawm zoo rau qhov chaw tshaj tawm
  • High attenuation ntawm 2nd thiab 3rd harmonic, tsis tas yuav txhawj txog cov zis
  • Hais dab tsi koj xav tau, peb pab nrog customization.
  • High Rejection mus txog 10th Harmonic
  • Etc.

 

qauv

A

B

configuration

Coaxial

Coaxial

zaus khwv

87-108 MHz

167-223 MHz

Max. Tswv yim fais fab

20 kW

10 kW

VSWR

≤ 1.1

≤ 1.1

zoo tsis

0.1 dB

0.1 dB

Kev Tiv Thaiv

2nd harmonic

≥ 35 dB cov

≥ 35 dB cov

2nd harmonic

≥ 60 dB cov

≥ 60 dB cov

connectors

3 1 / 8 "

3 1 / 8 "

Number of Elements

7

7

Qhov ntev

85 × 95 × 965 mm

85 × 95 × 495 mm

Nyhav

~ 8 kg

~ 4.4 kg

 

1. Ua rau muaj kev sib haum xeeb thiab spurious emissions

 

  • Lub xov tooj cua ua haujlwm tsis zoo rau kev pib xyaum ua haujlwm yuav yog qhov ua rau muaj lub zog sib haum xeeb. Nws tseem yuav cuam tshuam rau kev xa xov tooj cua ntawm lwm cov khoom siv nyob ze.
  • Amplifiers kuj tsim harmonics. Raws li peb txhua tus paub, lawv yuav distort lub teeb liab waveform, los yog lawv yog nonlinear rau qee yam. Kev tsim qauv xov tooj cua tsis zoo yuav ua rau muaj kev sib haum xeeb. Yog li ntawd, koj tuaj yeem txo kev cuam tshuam los ntawm kev siv lub platform zoo tsim.
  • Txawm hais tias lub cuab yeej tsis kis tau zoo, nws yuav tsim cov pa tawm spurious. Qhov no tej zaum yuav yog vim muaj cov teeb liab ceev, cov khoom siv hluav taws xob tsis zoo, lossis lwm yam teeb meem teeb meem. Yog hais tias lub cuab yeej nquag xa tawm, spurious emission yuav tshwm sim rau ob qho laj thawj:
  • Cov hlua hluav taws xob txuas nrog lub xov tooj cua muaj lub suab nrov nrov. Nws ua rau lub zog amplifier ntawm lub xov tooj cua tsim qee zaus.
  • Qee cov khoom ntawm PCB tuaj yeem nqa cov zaus hauv paus.

 

TSAB NTAWV CEEB TOOM: Spurious kis tau tus mob yuav tshwm sim yog hais tias lub transmitter kis tsis raug sab nraum qhov tseeb bandwidth los yog hom siv. Nyob rau hauv cov ntaub ntawv no, lub transmitter generates ib tug txaws, uas tej zaum yuav cuam tshuam nrog lwm yam chaw tuned mus frequencies nyob ze ntawm lub zaus band.

 

2. Yuav txo qhov cuam tshuam ntawm Harmonics thiab Spurious Emission li cas?

 

Cov kauj ruam hauv qab no tuaj yeem ua los tswj kev cuam tshuam theem:

 

  • Tshawb xyuas lub transmitter kom txo qis kev tawm tsam spurious emission.
  • Xyuas kom cov khoom siv nrov nrov thiab cov khoom sib dhos nyob deb ntawm lub kav hlau txais xov.
  • Tsis txhob siv cov xov tooj cua amateur transmitters uas ua haujlwm tsis zoo.

 

DAIM NTAWV CEEB TOOM: Harmonic thiab spurious emissions tsis tuaj yeem zam tau tab sis tuaj yeem txo qis rau qee yam. Ib qho kev sib haum xeeb teeb liab sab nraum lub channel ntawm lub transmitter yog suav tias yog kev sib kis tsis zoo. Lawv feem ntau yog tshwm sim los ntawm cov cuab yeej ua haujlwm tsis zoo lossis cuam tshuam ib puag ncig.

 

Ntxiv Qhia rau xov tooj cua cuam tshuam

 

Cov hauv qab no yog ib qho kev paub ntxiv hauv xov tooj cua qhia txog dab tsi hauv xov tooj cua cuam tshuam thiab yuav txo qhov cuam tshuam ntawm xov tooj cua cuam tshuam li cas. Peb ntseeg tias yav dhau los tau muaj cov ntaub ntawv txaus ntawm RF cov ntxaij lim dej, tab sis qee qhov teeb meem hauv xov tooj cua thiab kev txais tos tseem muaj teeb meem hauv lub neej tiag tiag. Ntau tus neeg siv khoom hauv xov tooj cua nto qaub ncaug rau hauv xov tooj cua cuam tshuam thiab thov kom peb tsim cov kev daws teeb meem tshwj xeeb rau lawv. Yog li, peb yuav piav qhia luv luv txog qee qhov kev paub txog kev cuam tshuam hauv xov tooj cua hauv ntau pua lo lus ntxiv

 

1. Yam khoom siv twg tuaj yeem cuam tshuam los ntawm xov tooj cua cuam tshuam?

 

Ob lub xov tooj cua thiab cov khoom siv tsis yog xov tooj cua tuaj yeem cuam tshuam los ntawm xov tooj cua teeb liab. Cov khoom siv xov tooj cua suav nrog AM thiab FM xov tooj cua, TVs, xov tooj tsis muaj zog, thiab wireless intercoms. Cov khoom siv hluav taws xob tsis yog xov tooj cua suav nrog lub suab tso suab, xov tooj cua, thiab cov xov tooj sib txuas tsis tu ncua. Tag nrho cov cuab yeej no tuaj yeem cuam tshuam los ntawm xov tooj cua teeb liab.

 

2. Dab tsi tuaj yeem ua rau xov tooj cua cuam tshuam?

 

Kev cuam tshuam feem ntau tshwm sim thaum lub xov tooj cua transmitters thiab cov khoom siv hluav taws xob ua haujlwm nyob ze ntawm ib leeg. Kev cuam tshuam yog tshwm sim los ntawm:

  • Txhim kho cov khoom siv xov tooj cua tsis raug;
  • Ib lub xov tooj cua khaus khaus los ntawm lub transmitter nyob ze;
  • Cov teeb liab tsis xav tau (hu ua spurious radiation) tsim los ntawm cov khoom siv kis; thiab
  • Tsis txaus tiv thaiv los yog lim hauv cov khoom siv hluav taws xob los tiv thaiv nws los ntawm kev khaws cov cim tsis xav tau.

 

3. Koj Yuav Ua Li Cas?

 

  1. Sim tiv thaiv cov teeb meem cuam tshuam ua ntej lawv tshwm sim. Tham nrog cov tub ceev xwm hauv nroog kom paub seb cov kev cai dab tsi siv rau cov kav hlau txais xov thiab cov qauv ntauwd. Thaum koj muaj txoj kev npaj teeb tsa uas ua tau raws li kev cai hauv nroog, tham nrog koj cov neeg nyob ze. Piav seb koj xav ua dab tsi thiab vim li cas. Qhia rau lawv tias koj yuav ua qhov zoo tshaj plaws los tiv thaiv txhua yam teeb meem. Nco ntsoov lawv tias GRS thiab cov neeg ua haujlwm hauv xov tooj cua feem ntau ua haujlwm tseem ceeb rau pej xeem los ntawm kev pab cov tub ceev xwm hauv zos thaum muaj xwm txheej ceev thiab cov xwm txheej loj rau pej xeem.
  2. Xyuas kom tseeb tias koj cov cuab yeej raug ntsia kom raug. Radiostation tus kav hlau txais xov yuav tsum nyob deb ntawm cov tsev nyob sib ze li sai tau thiab nyob deb ntawm cov kab hluav taws xob uas tuaj yeem cuam tshuam rau nws txoj haujlwm. Ua tib zoo nyeem cov ntu, Txhim kho Koj qhov chaw nres tsheb xov tooj cua.
  3. Ua haujlwm koj qhov chaw nres tsheb nrog koj cov neeg nyob ze hauv siab. Txwv tsis pub lub zog xa hluav taws xob, qhov ua tau, mus rau qhov tsawg kawg nkaus xav tau rau kev sib txuas lus txaus. Rau GRS chaw nres tsheb uas kis tau tus mob, lub hwj chim amplifiers tsis tso cai, qhov siab tshaj plaws tso zis rau lub kav hlau txais xov yuav tsum tsis txhob ntau tshaj 4 watts (ib leeg sideband; 12watts ncov).
  4. Xyuas kom koj cov cuab yeej tswj tau zoo raws li nws cov kev xav tau. Nyob rau tib lub sijhawm, koj yuav tsum xyuas kom meej tias qhov kev xa tawm yog qhov tseeb, qhov bandwidth nyob rau hauv kev txwv tsis pub khiav lag luam, thiab cov chaw nres tsheb cables, kav hlau txais xov, thiab hauv av system tau zoo.

 

4. Koj tseem yuav tsum:

 

  • Ua siab ntev rau cov teeb meem cuam tshuam thiab sim daws lawv sai li sai tau.
  • Ua hauj lwm nrog koj cov neeg nyob ze kom paub seb dab tsi ua rau muaj teeb meem thiab dab tsi ua rau nws zoo dua.
  • Thaum koj tab tom sim nrhiav kev daws teeb meem rau kev cuam tshuam, txwv koj lub zog xa hluav taws xob thiab lub sijhawm ua haujlwm. Xav txog kev kaw koj qhov chaw nres tsheb tag nrho kom txog thaum qhov teeb meem raug kho.
  • Xav tias dawb hu rau peb yog tias koj tab tom ntsib teeb meem ntxiv

NCO NTSOOV

TIV TAUJ PEB

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FMUSER INTERNATIONAL GROUP LIMITED.

Peb ib txwm muab peb cov neeg siv khoom nrog cov khoom lag luam txhim khu kev qha thiab kev pabcuam siab.

Yog tias koj xav tiv tauj peb ncaj qha, thov mus rau hu rau peb

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