Dab tsi yog qhov sib txawv ntawm tus pin ntawm tus lej tooj liab thiab schottky diodes hauv RF systems?

1. Cov qauv thiab ua haujlwm ntawm PIN diode thiab schottky diode
(1) PIN Diode
Tus Pin diode yog ib qho tshwj xeeb microwave sementave sememonductor ntaus ntawv, uas yog tsim ntawm txheej ntawm cov pob zeb loj me me Cov qauv no ua rau tus mob tus mob puas muaj cov ntawv thov cim rau hauv cov hluav taws xob hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv high {}} zaus thiab nrawm hloov hloov pauv. Tus txheej txheem ua hauj lwm ntawm Pin diodes yog raws li cov kev sib tshuam PN ntawm semiconductors thiab kev tsim ntawm cov cheeb tsam depletion. Thaum tsis muaj sab nraud voltage, thaj av intrinsic (Kuv cheeb tsam) ntawm pencetion ua ib qho chaw zoo, yog li cov khoom siv tsis muaj tus yam ntxwv zoo. Thaum tus PIN diode yog pem hauv ntej biased, sab nraud hluav taws xob teb tsis muaj cov neeg muaj hluav taws xob, nqaim} Nyob rau hauv thaj av ntawm intrinsic, nce kev ua haujlwm ntawm thaj av intrinsic. Raws li tom ntej bias voltage nce, tus naj npawb ntawm cov neeg nqa khoom uas nce, thiab kev ua haujlwm ntawm tus Pin diode kuj tseem nce raws li. Thaum thim rov qab, sab nraud hluav taws xob ua kom tiav rau thaj tsam uas ua rau muaj cov khoom siv dawb, nthuav tawm hauv cov pej xeem dawb, ua rau muaj kev nce qib ntawm tus PIN diode.
(2) Scottky Diode
Schattky diode yog semiconductor diode nrog lub schottky barrier, thiab lo lus "schottky" hauv nws lub npe los ntawm German Doyicist Walter Schottky. Schottky diodes tau siv dav hauv qhov siab- Kev siv hluav taws xob nrawm, thiab cov hluav taws xob qis, thiab qis dua voltage poob hauv kev voj voog. Tus txheej txheem ua hauj lwm ntawm Schottky diodes yog raws li kev sib chwv ntawm cov hlau thiab semiconductors. Hauv thaj av ze ntawm qhov chaw sib cuag ntawm sab semiconductor sab, cov hluav taws xob hauv lub tshuab hluav taws xob tau them los ntawm cov hlau rau ntawm lub semiconductor. Txoj kev them nqi txheej txheem no tsim cov hlau thiab semiconductor, ua rau tus voltage ntawm ob mus rau ntau dua lub zog hluav taws xob. Raws li qhov hluav taws xob txuas ntxiv mus ntxiv, ib qho teeb meem schottky yog tsim rau ntawm qhov kev sib chwv ntawm cov hlau thiab cov semiconductor. Thaum qhov hluav taws xob thoob plaws cov txheej txheem Scrottky poob qis rau qee yam, qhov tsis kam ntawm Scritky Teeb Meem yuav muaj siab heev, ua rau nws tsis yooj yim sua kom dhau mus. Thaum qhov hluav taws xob hla lub pob tshuaj schottky nce, cov resply maj mam txo thiab maj mam kawg nce. Yog li ntawd, tus yam ntxwv ntawm schottky diodes yog unidirectional conduction, tso cai tsuas yog tam sim no kom ntws los ntawm anode rau catode rau catode.
2. Kev ua txujci kev ua tau zoo ntawm tus pin donises thiab schottky diodes nyob rau hauv RF systems
(1) PIN Diode
Kuj tsis paub meej impedance tus yam ntxwv: thaum tus pin di died yog tom ntej kev sib cav, tus cab kuj ntom ntom hauv nws cov txheej nce, ua rau muaj kev txo qis hauv lub cuab yeej ntawm lub cuab yeej. Thaum lub sij hawm thim rov qab, tus thauj khoom hauv kuv txheej txheej tau ploj mus, ua rau muaj kev nce qib ntawm cov khoom siv. Qhov no sib txawv importers tso cai rau tus pin dodes yuav siv ua Adjentrenators, hloov chaw, modulators, thiab lwm yam.
Cov yam ntxwv hloov nrawm dua: txawm hais tias tus Pin Diode muaj qhov dav thiab yuav tsum tau muaj qee lub sijhawm nyob rau pem hauv ntej kev tsis txaus siab thiab thim rov qab yog tseem sai dua li lwm lub microwave hloov.
Lub zog hluav taws xob muaj peev xwm: tus pin dodes tuaj yeem tiv thaiv lub zog loj, uas muab rau lawv qhov txiaj ntsig zoo hauv {{fais fab microwave ncig thiab tswj lub tshuab.
QABEAKE: Hauv qee cov kev siv, cov kab ntawm tus pin ntawm tus pin diodes tseem yog qhov tseem ceeb. Los ntawm kev txhim kho tsim thiab tsim cov txheej txheem tsim, siab linearity tus hniav nyem tuaj yeem ua tiav kom tau raws li cov ntawv thov kev thov.
(2) Scottky Diode
Qw tom ntej voltage voltage poob: Cov voltage nraim poob ntawm schottky dodes feem ntau yog qis dua hais tias ntawm kev sib tw PN me me
Ceev Hloov Hloov Cov Khoom Siv Ceev: Sciodes yog cov cab kuj tseem ceeb tshaj plaws uas tsis muaj qhov kev nrawm thiab haum rau kev siv hluav taws xob siab thiab hloov hloov nrawm.
Cov yam ntxwv loj: Schottky diodes muaj cov yam ntxwv zoo thiab txiav - tawm zaus. Nyob rau hauv high - zaus circuits, Schottky diodes muaj lub siab xws li high} ceev digital ncig thiab rf circuits.
Tsawg xau dej tam sim no: Qhov tam sim no ntawm schottky diodes yog qhov tsis muaj qhov tsis muaj qhov tam sim no thaum muab tshem tawm lub zog.
3. Kev thov cov xwm txheej ntawm Pin donises thiab schottky diodes nyob rau hauv RF systems
(1) PIN Diode
RF Hloov: Daim ntawv thov ntawm tus pin dodes hauv RF hloov yog ib qho ntawm nws cov xwm txheej tseem ceeb tshaj plaws. RF cov cav yuav siv los tswj cov / tawm thiab txoj kev xaiv ntawm RF cim. Raws li cov tub ntxhais sib xyaw ntawm RF hloov, PIN DIODES Control RF cim los ntawm kev hloov lawv cov bias valalage. Hom kev hloov no muaj qhov zoo ntawm cov lus teb nrawm, qis poob, thiab yog siv dav hauv lub tshuab hluav taws xob, nruab nrab, thiab lwm thaj teb.
Modulator: hauv modulator, tus lej PIN yog siv los hloov cov qes qis - zaus ntawm cov neeg nqa khoom siab. Los ntawm kev hloov pauv qhov hluav taws xob lossis tam sim no ntawm tus PIN diode, kev hloov kho ntawm cov cab kuj tuaj yeem ua tiav. Txoj kev ntsuas kev cai no tau siv dav hauv cov tshuab sib txuas lus wireless, xws li FM tshaj tawm, thiab lwm yam.
Hostenta: Pin Diode hostator yog siv los kho lub zog ntawm RF cim. Los ntawm kev sib txuas ntau tus pin dodes hauv series lossis kev tswj hwm thiab kev tswj hwm hluav taws xob, tsis sib haum xeeb ntawm RF cim tuaj yeem ua tiav. Cov fostenator no yog siv nyob rau hauv cov tshuab sib txuas lus los tiv thaiv cov khoom siv tsis muaj zog los ntawm kev cuam tshuam ntawm cov teeb liab muaj zog, thiab tseem siv tau los kho cov teeb liab nce thiab sib npaug.
Photodetector: PIN photodeties siv tau raws li photodetectors los hloov cov cim kho qhov muag rau hauv cov cim hluav taws xob kho qhov muag. Nws lub siab rhiab siab thiab cov cim nrov tsawg
(2) Scottky Diode
Kev ntsuas kub siab: Schottky diodes tau zoo siab hauv kev kho hluav taws xob vim lawv cov qib voltage kawg (feem ntau ntawm 0.15V thiab 0.45V). Piv nrog tsoos PN junction diodes, schottky diodes tuaj yeem txo qis kev txuag hluav taws xob thiab txhim kho kev txuag hluav taws xob. Piv txwv, hauv kev hloov cov khoom siv hluav taws xob thiab hloov kho cov tshuaj ntsuab, cov tshuaj ntsuam
Kev rho tawm cov teeb liab: hauv kev siv hluav taws xob kev tswj hwm, feem ntau tsuas yog ob peb txoj kev ua kom zoo dua) ntawm schottky diodes ua rau lawv zoo rau high- kev ua haujlwm. Piv txwv li, hauv DC {{{{{{2} DC cov chaw hloov roj teeb, Schottky diodes tuaj yeem hloov kho kom zoo dua thiab muab kev ua tau zoo dua. Tsis tas li ntawd, Sciodes dailes feem ntau siv hauv Anti cov kev tiv thaiv kev tiv thaiv kev puas tsuaj los tiv thaiv kev puas tsuaj rau cov hluav taws xob tiv thaiv.
Kev tiv thaiv hluav taws xob: Hauv cov logic logic circuits, ceev hloov ceev ceev ntawm schottky diodes yog lawv cov txiaj ntsig tseem ceeb. Nyob rau hauv high - Ceev cov logic ceev, schottky dodes yog siv raws li clamp diodes kom tiv thaiv kom tsis txhob muaj cov txheej txheem los ntawm overvoltage. Piv txwv li, hauv Computers thiab cov khoom sib txuas lus, Schottky diodes tuaj yeem ua kom muaj kev ncaj ncees thiab kev sib luag ntawm cov khoom uas tsis raug.
RF detectors, mixers, thiab modems: schottky diodes tseem dav siv hauv RF thiab microwave circuits. Vim tias nws lub junction tsawg capacitance thiab cov yam ntxwv yooj yim teb, schottky diodes nquag siv hauv rf detectors, mixers, thiab modems. Hauv cov khoom sib txuas lus wireless, schottky diodes tuaj yeem ua tiav cov kev ntsuas siab thiab kev ua tau zoo ntawm cov kab ke ntawm lub system.
4. Cov xwm txheej los txiav txim siab hauv kev xaiv ntawm tus lej PIN diodes thiab schottky diodes nyob rau hauv RF systems
(1) Cov kev xav tau ua tau zoo
Xaiv hom uas tsim nyog raws li cov kev xav tau tshwj xeeb, xws li cov hluav taws xob muaj peev xwm ua haujlwm tau zoo, thiab kab ke zoo, tus lej Pin yuav yog qhov kev xaiv zoo; Yog tias lub kaw lus muaj cov ntsiab lus siab rau cov yam ntxwv ua kom nquag thiab hloov nrawm, schottky diodes muaj ntau dua zoo dua.
(2) nqi yam nqi
Hom sib txawv ntawm ddayes yuav muaj qhov sib txawv ntawm tus nqi. Nyob rau hauv lub rooj sib tham ntawm kev ua tiav kev ua tau zoo, nws yog qhov tsim nyog los txiav txim siab raug nqi thiab xaiv Diode nrog tus nqi siab tshaj plaws- ua hauj lwm zoo.
(3) Kev ntseeg tau xav tau
Rau qee lub tshuab RF uas yuav tsum muaj kev ntseeg siab, xws li nrhiav tau lub cav satellite, thiab lwm yam, nws yog qhov tsim nyog los xaiv dodes nrog kev ntseeg siab. Yam khoom xws li zoo, lub neej, thiab kev ruaj khov ntawm ddayes yuav tsum tau txiav txim siab.
(4) ntim khoom thiab kub dissipation
Vim nws cov qauv txawv, schottky diodes feem ntau yuav tsum tau ntim ntau dua los yog cua sov dissipation ntsuas los daws qhov kev ua haujlwm siab dua thiab cov dej ntws. Thaum xaiv, nws yog ib qho tsim nyog los xav txog daim ntawv ntim khoom thiab cua sov muaj peev xwm ntawm cov diode kom ntseeg tau tias nws txoj haujlwm ruaj khov hauv RF systems.
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