Core Ntsiab
LDMOs yog ib tug tsiaj ntawv luv rau yav tom ntej sib piv hlau oxide semiconductor.it yog cov ntaub ntawv ntsuas hluav taws xob tsim rau cov ntaub ntawv hluav taws xob ntau thiab tsim ntawm silicon substrate.
Hauv cov lus yooj yooj yim, koj tuaj yeem nkag siab nws yog hom transistor uas tuaj yeem ua haujlwm hnyav ", tshwj xeeb yog kev ua haujlwm nyob rau hauv siab thiab siab}} power.
1. Dab tsi yog nws? Cov ntsiab cai yooj yim thiab cov qauv teeb meem
LDMOs yog ib hom ntawm Mosfet, tab sis nws cov qauv tau raug tshwj xeeb kom ua tiav kom ua tiav cov kev cuam tshuam loj heev thiab kev ua haujlwm siab.
Lub "kab rov tav diffusion" hauv nws lub npe qhia tus yuam sij:
Transverse: Tam sim no ntws rov qab rau sab hauv (los ntawm qhov chaw mus ntws, mus thaum twg ntawm cov khoom sib txawv ntawm silicon
Diffusion: Hauv cov txheej txheem tsim khoom, tshwj xeeb yog P {{0 diffusion ".
Cov qauv kev coj ua ntawm LDMOs:
Lub Cheeb Tsam Drift: Muaj lub teeb tsa maj mam "ntawm qhov dej thiab cov channel.Qhov chaw yog lub ntsiab ntawm LDMOS txoj kev vam meej:
Muaj nuj nqi: withstand high voltage.ward lub transistor tau muab tua, feem ntau ntawm cov voltage dauv hauv cheeb tsam no kom tiv thaiv cov cuab yeej los ntawm kev tawg.
Cov txiaj ntsig: nws tso cai rau LDMOs ua haujlwm ntawm lub zog hluav taws xob ntau dua voltage, yog li tawm cov txiaj ntsig ntau dua zog.
Silicon oxide rho tawm: Thaum ntxov LDMOs feem ntau siv oxidation hauv zos rho tawm cov thev naus laus zis kom txo cov tshuaj tua hluav taws xob tsis zoo.
Asymmetric qauv: lub hauv paus, rooj vag, thiab ntws ntawm LDMOS tsis yog geometrical symymetricaly.Qhov no yog ib qho sib txawv ntawm nws thiab cov qauv symmetrical mosfet.
2. Cov ntsiab lus tseem ceeb
Qhov laj thawj yog vim li cas LDMOS tau ua rau thaj teb ntawm RF lub zog rau xyoo lawm yog vim nws cov ntawv tshaj plaws ntawm cov txiaj ntsig zoo:
Cov Khoom Siv Hluav Taws Xob Loj: Nws tuaj yeem ua kom muaj hluav taws xob ntau thiab cov dej khov, thiab tso zis tawm ntawm qhov chaw rau ntau lub zog xov tooj hluav taws xob.
Kev nce siab: ntawm ib qho zaus zaus, nws tuaj yeem muab cov teeb liab siab amplalification muaj peev xwm.
Zoo linearity: Qhov no yog ib qho ntawm nws txoj kev sib tw tseem ceeb tshaj plaws yog qhov tseem ceeb rau kev ua kom zoo nkauj niaj hnub no (ua kom muaj qhov zoo thiab ua tau zoo ntawm cov ntaub ntawv kis.
Siab siab: Muaj peev xwm tiv thaiv tus mob hnyav (xws li load tsis zoo), xws li thaum tus kav hlau txais xov tau puas tsuaj, nws tsis yooj yim hlawv.
Tus nqi - ua hauj lwm ua tau zoo: raws li paub tab yog qhov qis dua lwmy-} {4 {4 4 4 4}} sic).
Lub zog siv hluav taws xob: Feem ntau tsuas yog ib qho zoo hluav taws xob hluav taws xob yog qhov yuav tsum tau ua haujlwm, ua kom yooj yim rau kev tsim Circuit.
3. Cov chaw thov tseem ceeb
LDMOs yog lub zog tseem ceeb ntawm ntau qhov kev siv hluav taws xob:
Kev sib txuas lus ntawm kev sib txuas lus pib: Qhov no yog qhov loj tshaj plaws thiab kev lag luam tseem ceeb tshaj plaws rau LDMOS.
Macro hauv paus hluav taws xob lub zog amplifier: nws yog siv dav hauv 2G, 3g, thiab 4g tes hauj lwm, tshwj xeeb tshaj yog nyob rau hauv 1.1GHz zaus band.
5G loj mimo nquag kav hlau txais xov: Txawm hais tias ntsib kev sib tw gan ntau, LDMOS tseem yog kev xaiv sib tw hauv lub sub-6GHz Band xws li 3.5GHz.
Tshaj tawm cov xa tawm:
Lub hwj chim hluav taws xob amplifier theem ntawm cov xov tooj cua FM thiab TV tshaj xov xwm.
Muaj, kev tshawb fawb thiab kev kho mob ntau zaus:
Nws yog siv los ua lub zog rau cov ntshav ntshav, xov tooj cua zaus cua sov, kho mob microwave ablation thiab lwm yam cuab yeej siv.
Avionics thiab pej xeem kev nyab xeeb:
Siv nyob rau hauv Radar, xov tooj cua sib txuas lus thiab lwm lub tshuab.