寬禁帶固態(tài)功率放大器的研究.pdf

1、電子科技大學(xué)碩士學(xué)位論文寬禁帶固態(tài)功率放大器的研究姓名：崔鶴申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電子科學(xué)與技術(shù)指導(dǎo)教師：魏彥玉20100501一些墨!墜g：—————一ABSTRACTIllrec鉍tye粥，withthedevelopmentofcommuuicationsand皿croelemmctechn0Io西es，mod鋤militaryradarsystemisdevelopingtowardsm皿柵zan呱lli咖pow％highef

2、ficiencywidebandwidthandsuitableforworkingmharsh鋤怖衄伽舊燦thecoreofthesystem，thecharacteristicofRFpowerampll伍盯haspla：ycdakeyroleiIl也ep礬)吼鋤ceandtechnologylevelofthewholesyst鋤Amd也epowefampli斷isalsothemainenergyconsumingmodules

3、inthesyst鋤。I。腑et吡也erese疵hofimpro啊ngtheefficiencyofpoweramplifierisessentialtothewholesystemThe缸dg吼erationsemiconductormaterialshavewidebandgapsuch嬲GaN，SiC咖Thesematerialshaveabetterperformanceonbreakdownelectricfield，lli曲

4、heatconduCtionTate，highpowerdensitycapabilityhighelectronmobilityandthebett髓abibtyof刪radiationTheyareverysuitableforhighfrequencylli咖e伍a髓cyandhighpowerelectronicdevicesSotheinvestigationONwidebandPowerampllnersbecomesare

5、searchhotspotIIlthis讓螂is，aclassEpoweramplifierandaclassFpoweramplifiel“haVebeeIldesignedusingWBGdevicesThepeakcurrentandpeakvoltageofClassEandclassFpower鋤pli斷donotOCCBI=atthe$anletime，SOthedeviceissimilartoafswitch”wi也me

6、dl撒ct耐sticsofthelowestpowerconsumptionandtheoreticaleffici∞cyotlO晰Theb弱ic砷【lcipleanddesignmethodofclassEandclassFpowerampli士iersweredesc加edindetailinthisthesisThehighefficiencyofthepoweramplifi粥ha8beeIla出eVedwiththematch

7、ingcircuitsformedbymicrostripbranchlinesThepow日觚plifiersweresimulatedandoptimizedbyusingload’puntechnology鋤dhamomcbalancete幽logyi11ADS2008Atlastthedebugandtestofthepoweramplifier腑beendoneandthetestresultsmeetthedesignreq

8、uirementsThetestr懿mtsareshowninthefollowing。TheclassEpoweramplifierworksin也e18GHz～20GHzfrequencybandWhentheinputpowerequalsto30dBm，thegalnismore也an10dBandpoweraddedefficiency(PAE)reachesmorethan50％，cv∞60％in195GHzTheclass