Dab tsi yog kev tiv thaiv kev tiv thaiv ntawm diodes hauv antenna amplifier modules?

1. Txheej txheem cej luam ntawm Distras Amplifier Module
(1) Lub ntsiab cai ua haujlwm
Tus kav hlau txais xov hluav taws xob module feem ntau yog siv los txhim kho cov cim tsis muaj zog tau txais los ntawm tus kav hlau txais xov, txhawm rau txhim kho cov kev sib txuas lus thiab kev pab cuam ntawm kev sib txuas lus. Tus txheej txheem ua haujlwm yooj yim yog siv lub suab nrov kom ua kom pom cov paib qhia, thiab tom qab ntawd cov teeb liab nthuav dav rau cov teeb liab kev ua haujlwm. Hauv cov hom tau txais, cov teeb liab RF tau txais los ntawm tus kav hlau txais xov yog lim, thiab ua ntej kis tau rau demodulator rau demodulation; Hauv kev sib kis hom, cov teeb liab modulated yog nthuav dav los ntawm kev ua kom nrov dua thiab kis tau los ntawm ib tus kav hlau txais xov los ntawm tus kav hlau txais xov.
(2) Cov phom sij ntsib
Tus kav hlau txais xov Moduy ntsej muag ntau yam pheej hmoo thaum ua haujlwm. Firstly, vim lub laim hluav taws xob, lub zog tsis ua haujlwm, thiab lwm yam, thiab qhov kev ua haujlwm ntawm cov khoom sib txawv, ua rau lub neej sib xyaw thiab kev puas tsuaj ntawm cov cuab yeej hauv cov qauv. Qhov thib ob, electrostatic tawm (ESD) yog ib qho kev cuam tshuam hluav taws xob hauv hluav taws xob hauv hluav taws xob. Cov hluav taws xob zoo li qub nqa los ntawm tib neeg lub cev, khoom siv, thiab lwm yam tuaj yeem tsim hluav taws xob ntau dua thaum muaj tus kav hlau txais xov, ua rau muaj kev puas tsuaj rau cov qauv. Tsis tas li ntawd, kev sib txuas tsis yog lossis cov khoom siv tsis yog
2. Tiv thaiv mechanism ntawm dodes
(1) Kev Tiv Thaiv Kev Tiv Thaiv
Kev tiv thaiv ntau tshaj yog ib qho kev tiv thaiv ntau tshaj plaws ntawm diodes hauv kav hlau txais xov cov khoom siv. Thaum cov tswv yim voltage ntau dua cov conduction conduction ntawm Diode, tus dev yuav ua rau muaj kev nyab xeeb rau hauv av lossis lwm txoj kev tiv thaiv kev nyab xeeb, yog tsis muaj kev tiv thaiv sab hauv ntawm cov kev cuam tshuam los ntawm kev ua haujlwm ntawm overvoltage. Zener deser dones thiab Transient voltage suppression (TVs) Diodes feem ntau siv cov kev tiv thaiv kev tiv thaiv diodes. Zener desies muaj lub zog ruaj khov rhuav tshem hluav taws xob. Thaum cov rov qab voltage ntau dua lawv qhov kev sib cav sib ceg, lawv yuav ua rau nrawm, close tawm ntawm voltage nyob ze rau qhov tawg voltage. TVS Diodes muaj lub peev xwm nrawm dua thiab muaj peev xwm nqus lub zog ntawm cov khoom siv luv luv, tiv thaiv cov Circuit Court ntawm kev puas tsuaj.
(2) electrostatatic tawm (ESD) tiv thaiv
ESD kev tiv thaiv yog qhov tseem ceeb tshaj plaws kom ntseeg tau tias cov kav hlau txais xov cov khoom tsis zoo thaum raug hluav taws xob zoo li qub. Schottky diodes thiab tsawg Capacitance TVs Diodes Uiodes feem ntau siv rau ESD tiv thaiv. Schottky diodes tau qis rau pem hauv ntej voltage poob thiab nrawm dua hloov ESD tam sim no rau hauv av tam sim no rau cov cim tshwm sim. Tsawg Capacchance tvs dodes muaj qis dua parasitic capacitance, uas tuaj yeem txo cov kev tiv thaiv ntawm high {}} ceev cov nruab nrog tshuab.
(3) Rov qab polarity tiv thaiv
Kev thim rov qab polarity kev tiv thaiv tuaj yeem tiv thaiv kev hloov pauv module tshwm sim los ntawm kev sib txuas tsis raug. Lub hau kev conduction rau pem hauv ntej ntawm ib tug diode cia nws ua haujlwm nyob rau hauv rov qab polarity, kev tiv thaiv tam sim no los ntawm kev hla mus rau hauv lub voj voog ntawm tus qauv. Rectifier decifier diodes yuav siv tau los rov qab tiv thaiv polarity, uas muaj nqi tsawg thiab siab ntseeg tau, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov kev thov tshaj plaws.
3. Cov yam ntxwv thiab qhov zoo ntawm ntau hom kev xav txog kev siv tshuaj tiv thaiv
(1) zener diode
Zener desies muaj qhov ruaj khov rov qab voltage thiab haum rau cov ntawv thov uas yuav tsum muaj qhov ntsuas siab rau kev tiv thaiv ntau. Nws cov txiaj ntsig yog tus nqi qis thiab kev ua tau ruaj khov, tab sis nws tsis muaj zog hauv kev nqus lub zog.
(2) Cov khoom siv Transient rapillion (TVs) Diode
TVS Diodes muaj lub peev xwm tsis tshua muaj zog thiab muaj peev xwm ua tau zoo tam sim no ntawm kev siv hluav taws xob ntau thiab tiv thaiv kev sib tw ntawm kev puas tsuaj. Nws yog qhov haum rau kev sib txuas lus uas xav tau nruj tiv thaiv kev tiv thaiv, xws li high- ceev cov ntaub ntawv kis tshuab, satellite kev sib txuas lus cov tshuab, thiab lwm yam.
(3) schottky diode
Schottky diodes tau qis rau pem hauv ntej voltage poob thiab nrawm nrawm nrawm, ua rau lawv haum siab thiab siab- kev sib txuas lus nrawm. Hauv Esd kev tiv thaiv, nws tuaj yeem coj tus ESD ntau tam sim no rau hauv av thaum muaj kev cuam tshuam tsawg tsawg rau cov cim tshwm sim.
(4) Rectifier Diode
Rectifiers tau siv rau kev thim rov qab polarity kev tiv thaiv, uas muaj nqi tsawg thiab siab ntseeg tau, thiab tuaj yeem ua tau cov kev tiv thaiv kev tiv thaiv feem ntau.
4. Cov ntsiab lus tsim qauv ntawm Diode Kev Tiv Thaiv Circuit Court
(1) Xaiv ntawm Circuit Court Topology
Xaiv cov qauv hluav taws xob tsim nyog sab topology raws li cov cai tiv thaiv sib txawv. Piv txwv li, rau kev tiv thaiv kev tiv thaiv kev tiv thaiv, sib tw diodes tuaj yeem siv rau txuas ncaj qha rau kev sib tw ntawm ob tog ntawm lub Circuit Court uas xav tau kev tiv thaiv; Rau cov kev tiv thaiv ESD, series lossis kev sib txuas sib txuas tuaj yeem siv tau, nyob ntawm seb cov teeb liab uas yuav tsum muaj.
(2) parameter xam thiab txuam nrog
Thaum tsim kev tiv thaiv kev tiv thaiv Diode, nws yog qhov tsim nyog los suav cov teeb meem, xws li conduction voltage, thiab meej tias lawv phim cov ntsuas ntawm kev tiv thaiv Circuital. Piv txwv li, thaum xaiv cov TV uas tsim nyog los txiav txim siab nws cov kev ntsuas tsis txaus, thiab lwm yam kev tiv thaiv zoo los ua kom tau kev tiv thaiv zoo nyob hauv cov txheej txheem.
(3) Layout thiab xaim
Cov txheej txheem teeb tsa tsim nyog thiab cov hlau hluav taws yog qhov tseem ceeb rau kev ua haujlwm ntawm Diode kev tiv thaiv kev tiv thaiv. Txoj kev sib txuas kab nruab nrab ntawm Diode thiab cov kev tiv thaiv Circuit Court yuav tsum tau ua kom ntau li ntau tau kom txo tau ntau npaum li cas los txo kev cuam tshuam ntawm cab thiab capacitance inductance. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau cov cua sov dissipation ntawm diode kom ntseeg tau tias nws yuav tsis raug puas vim yog overheating thaum lub sijhawm ua haujlwm.
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