Yuav ua li cas siv diodes rau RF kev tiv thaiv ntawm cov chaw nres tsheb cellular?

1. Qhov tseem ceeb ntawm RF kev tiv thaiv rau cov chaw nres tsheb cellular
RF ib feem ntawm cov chaw nres tsheb hauv paus yog qhov tseem ceeb txuas rau cov kev sib kis teeb liab, thiab nws cov kev kis tau zoo, thiab cov ntaub ntawv kis tau ntau yam ntawm kev sib txuas lus. Xov tooj cua tau cuam tshuam yooj yim los ntawm kev cuam tshuam ib puag ncig ib puag ncig sab nraud, xws li xob laim, uas yuav ua rau muaj kev lom zem. Kev ntsuas hluav taws xob ntau dhau ntawm cov xov tooj cua hauv lub xov tooj cua Coob cov xov tooj cua tau, ua rau cov khoom puas khoom. Nyob rau tib lub sijhawm, electrostatic tawm kuj yog ib qho kev hem thawj. Lub hluav taws xob zoo li qub tsim los ntawm kev sib txhuam ntawm tib neeg lub cev thiab cov cuab yeej siv tam sim hluav taws xob, ua rau muaj kev puas tsuaj rau RF circuits. Ib qho ntxiv, ntau yam xov tooj cua ntsuas muaj nyob rau hauv cov txheej txheem hluav taws xob ib puag ncig, uas yuav cuam tshuam nrog kev sib txuas lus sib txuas lus thiab txo kev sib txuas lus zoo.
Lub hom phiaj ntawm RF kev tiv thaiv yog kom ntseeg tau tias RF ib feem ntawm cov chaw nres tsheb cellular tuaj yeem ua haujlwm ruaj khov thiab ntseeg tau nyob rau ntau qhov chaw hnyav. Los ntawm kev siv cov kev tiv thaiv zoo, cov tshwm sim ntawm cov khoom lag luam tsis tuaj yeem raug txo, thiab kev sib txuas lus zoo, thiab kev sib txuas lus ib txwm muaj ntawm cov neeg siv tuaj yeem lav.
2. Cov ntsiab cai tseem ceeb thiab cov yam ntxwv ntawm dodes
Diode yog cov cuab yeej siv ua ke nrog cov qauv tsis sib xws, muaj cov qauv pn tsim los ntawm P} 0}} Hom semiconductors. Thaum xa mus rau pem hauv ntej, qhov hauv P cheeb tsam thiab cov tshuab hluav taws xob hauv N cheeb tsam txav mus rau lub PN sib tshuam, tsim ib qho tam sim no thiab ua rau tus dev no; Thaum thim rov qab txiav txim siab, cov PN cov lus sib txuas ua ib daim teb hluav taws xob sab hauv, tiv thaiv kev txav ntawm cov neeg nqa khoom. Tam sim no yog heev, thiab cov diode muab tua.
Diodes muaj ntau yam ntxwv, xws li rectification, uas tuaj yeem hloov dua lwm txoj kev tam sim no; Hloov cov yam ntxwv tuaj yeem ua tiav nrawm hloov ua haujlwm hauv high - zaus circuences; Txwv tus yam ntxwv, muaj peev xwm ntawm kev txwv voltage dogitude amplitude thiab tiv thaiv cov voj voog tom ntej; Clamping tej yam ntxwv tuaj yeem ua rau lub zog hluav taws xob ntawm tus nqi tshwj xeeb. Cov yam ntxwv no ua rau muaj kev siv nyob rau hauv cov hluav taws xob hluav taws xob thiab muab peev xwm muab kev tiv thaiv rf.
3. Daim ntawv thov ntawm diodes hauv RF kev tiv thaiv
(1) Kev Tiv Thaiv Kev Tiv Thaiv
Nyob rau hauv cov chaw nres tsheb cellular, overvoltage phenomena tej zaum yuav tshwm sim los ntawm ntau yam, xws li muaj kev tiv thaiv kev nyab xeeb, yog kev tiv thaiv lwm yam hauv RF Circuit Court. Piv txwv li, ib zenerer diode yog ib qho siv siv cov khoom siv tiv thaiv ntau yam. Thaum cov thaub qab voltage tshaj nws qhov kev sib cav sib ntau tshaj plaws, zener diode yuav ua rau tiv thaiv sai sai, kev puas tsuaj rau kev puas tsuaj rau tom qab kev sib tw los ntawm kev siv hluav taws xob tom ntej.
(2) electrostatatic tawm (ESD) tiv thaiv
ESD yog ib qho ntawm cov kev hem thawj zaug los ntawm RF voj voog hauv cov chaw nres tsheb cellular. Lub hluav taws xob zoo li qub tsim los ntawm kev sib txhuam ntawm tib neeg lub cev thiab khoom siv yuav tso tawm ntau voltage, ua rau kev puas tsuaj rau RF Circuit Court. Diodes tuaj yeem ua cov cuab yeej tiv thaiv, tso tawm sai sai ntawm cov txheej xwm ESD los tiv thaiv kev tiv thaiv kev tiv thaiv hauv RF circuits. Piv txwv li, Transient voltag kev downency diodes (TVs
(3) RF Hloov thiab Ua Haujlwm
Nyob rau hauv rf pem hauv ntej -}}}} xaus ntawm cellular pob luj, teeb liab hloov thiab tswj kev tswj hwm feem ntau yuav tsum tau ua. Ib qho Diode tuaj yeem siv ua RF hloov mus tswj cov kev tswj hwm ntawm / tawm cov cim los ntawm kev tswj hwm nws qhov kev tsis ncaj ncees. Piv txwv li, tus lej Pin diodes ua rau muaj kev cuam tshuam qis qis thaum tom ntej kev sib cav, sib npaug rau lub xeev kev coj ua; Thaum thim rov qab tsis zoo, nws ua pov thawj siab yuam kev, sib npaug rau lub xeev txiav txiav. Los ntawm kev siv cov yeeb yaj kiab no, siab-}} performance performance performance performance performance rf hloov tuaj yeem tsim los kom ua tiav cov teeb liab nrawm nrawm.
Lub caij no, dailes tseem tuaj yeem siv ua RF hostenters. Los ntawm kev hloov pauv kev bias mob ntawm Diode, nws cov impedance tuaj yeem hloov kho kom ua tiav kev tswj hwm ntawm RF cim. Qhov no tus kheej muaj qhov zoo ntawm qhov loj me me, tus nqi qis, thiab muaj kev sib koom ua ke yooj yim, thiab tau siv dav hauv cov chaw nres tsheb cellular.
(4) lim dej tiv thaiv
Hauv qee kis, lub ntsiab ntawm RF cov cim yuav tshaj li kev ua haujlwm ib txwm muaj ntawm RF voj voog, ua rau muaj teeb liab distortion lossis kev puas tsuaj rau cov khoom siv. Ib tug diode ceg txwv tuaj yeem txwv lub qhov nrov ntawm lub teeb liab, khaws nws hauv kev nyab xeeb. Piv txwv li, los ntawm kev siv tus yam ntxwv tsis muaj txiaj ntsig ntawm donitudes tshaj li qhov muaj nuj nqis, siv lub zog ntau tshaj plaws thiab ua tiav qhov ua tiav kev tiv thaiv rau lub teeb liab.
4. Cov ntsiab lus tseem ceeb ntawm diodes hauv RF kev tiv thaiv Circuit Court tsim
(1) Xaiv ntawm Circuit Court Topology
Xaiv cov cim circuit Court tsim nyog raws li cov kev tiv thaiv kev tiv thaiv rf sib txawv. Piv txwv li, rau kev tiv thaiv kev tiv thaiv ntau yam, cov qauv sib txawv los yog cov qauv sib txawv tuaj yeem siv tau; Yog xav tau kev tiv thaiv ESD, nws yog qhov tsim nyog los xav txog cov lus teb ceev thiab lub zog muaj peev xwm ntawm Diode, thiab xaiv txoj qauv tsim nyog los txhim kho kev tiv thaiv kev tiv thaiv.
(2) parameter txuam thiab ua kom zoo dua
Kev tsim nyog xaiv cov lus ntawm Diode, xws li tawg voltage, clamp voltage, kom phim cov kev ua haujlwm ntawm RF Circuit Court. Nyob rau tib lub sijhawm, ua kom zoo dua cov qauv kev tsim qauv, xws li kev kho cov bias ntawm dodemes ntawm dodcuit co duab, thiab lwm yam, txhawm rau txhim kho kev tiv thaiv kev tiv thaiv.
(3) Cov Qauv Kub
Ib tug diode generates cua sov thaum ua haujlwm, thiab yog tias cov cua sov tsis cuam tshuam nrog lub sijhawm, nws yuav cuam tshuam nws qhov kev ua tau zoo thiab kev ntseeg tau. Yog li ntawd, hauv kev tsim ntawm RF kev tiv thaiv kev sib tw, xws li siv cov dej sov, ua kom zoo dua cov kev ntsuas hluav taws xob, ua kom cov kev ntsuas hluav taws xob ua kom paub meej tias qhov kev ua haujlwm tau nyob hauv qhov kev ua haujlwm ntsuas kub.
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