EP-4736321-A2 - HIGH-SPEED, HIGH-POWER OPERATIONAL AMPLIFIER AND LINEAR AMPLITUDE MODULATOR

Abstract

A high-speed, high-power gallium-nitride-based (GaN-based) operational amplifier ("opamp") and a GaN-based high-power, wideband linear amplitude modulator (LAM) that may be used to implement a dynamic power supply (DPS) in a high- power, wideband polar modulator are disclosed. The high-speed, high-power GaN- based opamp comprises an input differential amplifier having an input-DC-offset¬ minimizing circuit and a class AB push-pull output stage including an efficiency¬ enhancing source follower control circuit that provides for a unique and modified form of buffered frequency compensation. The GaN-based high-power, wideband LAM comprises an input differential amplifier having an input-DC-offset¬ minimizing circuit, similar to that used in the GaN-based opamp, and a current boost circuit that maintains a source follower in an output stage of the LAM in saturation during times the LAM's output voltage is low.

Inventors

• MAJDAK, Tomislav

Assignees

• Eridan Communications d.o.o.

Dates

Publication Date

20260506

Application Date

20240401

Claims (1)

1. orneoceo.:- .n oeraona ameroam, comrsn: mo annuerena ameravn ars armncun arseeon mnemzen-e resecsorra,n as ssecoorn arm coauvne anr sser ceusrr wen s aonurnu-ose- r cascaeeeon moes an a curr cencun secon an seres we secon a en-reuan ressor connecen source co nr cascaeeeon moes, an aa curren aueoers an secon arms ann onuerusa ameer an ouu oenuev amee ser conureo s aeve o a sne-ene asne ouu reenr.a amero aeve-se vaue aroraeor ave su.sanea oame o sameamae, w wer-eon-eners an s reacoon, aneeeonn muo-e-s o resssea-nmcen.mzn ressor an curren-reuan ressorave susanae same amer..e oam oam, werene ouu amer comrses aus-u u cass.e a omame or.am, wereneus-u amer comrses aus- orneoceo.:- con.e oam oam, wereneus-u amer comrses a enarnoc cnrc ruessaovr cnoour an eeon moes an an ecenc- ran oe eueoen meoweeen a, s aonurc aen oeoureeon moe an a moourcee cou we ao aa ouu crcuavn a sxeeon s ea ceo oueeoourereane oon meoee.eon moe an a seven.eeeo ona mmo oeamav,n w aererann ceon onuecue crocue suoruer comrses a eeon moe, an werene source-ran conneconorrcmee oee sx sx an seveneeon moes serves as an ouu oe oam.weene caacor. coue oeamew oeeam,urer comrsn areuenc-comensaon amer an a secon none anrse no seceonn aerm co onroe cnrcuu oereenuas a-muer. co .e oam oam, wereneoureeon moe ne onorwoer crcau oeus-u amers conureo oeraeo as a source an as an acvoe eowemse ann ouu voaeourouce ae ouu oe oam comensaon caacor.aocs aeeorwararouereuenc- an.eraee oa cmrcu o wam a o, weereeneeo on mamo comrses aaum nre canneeeon moea -eecron-mo eranssso orsea o-amesn. n- orneoceo.:- reaera.ne oza.m oam, werene oamas aan-anw rouc reaera.ne oza.m oam, werene oamas aan-anw rouc an.nuneare armue mouaor , comrsn: voae a orse conmumone-nseoa ruenrc aem a amerer conureo am a sne-ene ouu a sourceoower ouu a smer ranssor as conroe aacceoncun arseeon moee-eec common-sourcean sae a rno a voaerouce a an ouu oe a currenoos crcun caon maunreo su curreno aoa an sauraonurnmes an ouu voaeansoue orseeeon moe n zero or near zero vos. sourceoower ouu saes ars arm.nceun a o secam, werenenuerena amer comrses seres w annu--oonseeon moee-eecranssor couen curren so e-mnmzn ressor, a secon arm comrsn ars curren-reurcencunr anour cascaeeeon moes an a eeon muoaen ress,s anor c aonane ccuerrenn s seoruercse w coueeor aenrsou arn s ceacsocnae arms. orneoceo.:- conure.o se a oevaem o,eu srer comrsn annersaeeve ser ere ne-ene ouu sna oenu commonn-aso aumrce ameroe ar.eve-se vaue aroraeorasners newor co.ueeew oeenaemnu, oureer cnoemrsrasenev aere sueenrc comensaon common-source amer. an ouu oe a s.econe comm oon-saoumrc, werene currenoos crcu comrses: annu eve sere c aomnuer voaeno a reo s aeve o a nu source a eve-se vaue aroraeorasne secon common- as c am on voroaer ee-c aonnreo seeco cnurr ceonm smoounrc-esounrccue amn a seerc.oneeon moe comrses. aere oeona mmoe, we creonnuer seecoone cormvmenon-soureceev ame-seer nu voae an an acveoancun aoureeon moe. maxmum. voeaea o canaem a,euroer comrsn aoe ceramse e secon common-source amer. aae oereeon moe n orneoceo.:- amer.e o a ooaarm mou, waoerr oeneoa comrses a swc-moeower orwveesr a ams anearm ancoe r anearn an enveoeracn se w oeur suu voaeo vuo oaeeo sroureceoow oerr onuearu s.ae ane.e oam, werene comrses aaum nre canneereaeon c mrcoue wa a o-eeecreon-emoon moeranssso orsea-ens. n-

Description

orneoceo.:- ra an moerna communcaons ssems use a mucarrer ansemrssaonnr sacnsemmenno awn as- or-roaonareuenc-vson muexn . anw,n an ransmer meuaae s,roeawmer o-n a-r saneea caa srrrer over a we mouae ono aura o cose-sace eams are usua re , narrowan, oroona carrers sameanwerre.o aesca “ussucarrers” or “ones” anransmenarae overe cane seece sucaeeere suuceanrcrers are oroona,e sucarrerreuences exen, wou concernorner-carrer sneecrraer oe sucarrers overao some ecenc comareo moreraonareuenecnc-e,vsusonn mcrueasnex snec scra ao no uze oroona sucarrers.e emes ssems emon cra ecencsurer enancen mouaee sucarrers.or e nxoanm-cone,sanno eunrve-oee mouaonormaso sucarrersne neraon ceuar newors, eer ownnase saono moe are mouae usn ,-- o orr--, a,nenenn ne ownores suuacarr oers aeren mo.uae usn-moran avanouaes suc as seseemrs re asree snecceroare euecncen- an oer oer asoave one ver sncanra seecvean,e rouce wac.ecca,eme-oman waveorm o-averae aowee oru rauo oe.e ssem’srannscmreaeserse anssoave a ea- sucarrersncreases annnear--aseransmers necessea nuemsaecr on oe orneoceo.:- o sauuruaeoowweerrn o oreero avora cnsmner’se sownear amease orerom osueua. ereserveacnenar oroem oueunuoweroeseo avosoron.e.,oes susana comr oe ouu.owever, aso s, wcomss oesene eene crase encenc s oseems., ensee wcaao wene roemso emo wasnown as a “o avos aoar mou ar mouaor.”susraen., mouaora,o arn a n coonmnerasres sw acn-ammoceower su e, aase .e mouaes arec cur .., aass, or annu amue-mouaren ower su voae enveoe oe sn n sna reresenne sna weease aas umaerouce ae ouu oe , mouan sn maouao.rs meouaes aran-sraeeusence r carrer aase- enve ooe,ase-mouae carrerIoeroweseurn as coon msoanu-aese mo.u uacu ecornOUT o carr,eree oe nroo owneN er, ser av veo sso aa ss ae ararnosuaceeseease- mxese- IN erves eecve as a mxera amue mouraenuen scnaase-mo.uae carrerIN weower-reuenc eran sunrouocrn oee conanesnnowenn oeuowue vro amaeer arsrou mouaon.”s aecnueas un as “ran wornnea ueo s,n oer wors,oes no avno arse, ansr eoxuoeeneuoaorr m ooueaor na.rcnucaeroe avo orneoceo.:- envaseeo-meou.ea.e carrerIN aeoenuoras a consan roem, n aon ae annane neeoac a owaes o oueruaesn coowmeresson,e- ovae. rsereore roem an neeouoaeco oar meo ouuaor s eecve a avone- ecenc comareonears, a nuumer oower, acnu o cearse an meusc er enernsesn.ne oe mos cu are encounere mouaor caenesnvoveseesn oeoar roucn’ vser o.unu some aowercsa,oonrs exaemeens o w mause caae o e sameme oeran over a w s orer, we a suc ouu ow eanw.n orerore orouce ver currens aneenresr,ane an w msaunsner veeorree ca voaaee os. sun amue mnoouwa-oorwer, narr cowan acaons, a scon-ase-asenearn.,e-ase an ceom userseos am secmonen oereaona am.serus.er.ae “oam” an a scon-canne mea-oxe- ,ranssor.e., s semconucore-eec e scon oamcon “ se-crveasnn aes an error am” or sercon “ ”ass eemen. comarese su v a connuous sames an e oae o an enveoe snaenv reresenn sn aam caunee-sm ooveruamne, sen sacon o.amse amue oe enveoeenv su voae accorn, vae ausse amue oe scon saveow ass eemen.norunae, ase ncaae or weasoawnn vnoaees, w voca reensera aerme anresenen- orneoceo.:- ower aaccasonse.anorweover, a nneacre sscsuanrar ao ancc wurnaeean acaons,e-asenenu amue-mou e rero suuce veoae conane. -ower, we uensauna a o scacoonns s ane-ase or eecroncroeres ose.sroseume cnanaree ovaerrcoomee maera an usn aeren semconu , aeasneor, mosr coro consruce oam an .ne oe aaosm asarner ca enneraesansae-annre semconucoraum nrea. orer-o-manu . e versus. e an an xon eerreaowne. cm versus. cm. eas oe mseanuroacerurens, semacornaucorscssaveemonsraee mo ranssorsor “a- nss”s,orasv,nn vaerrcuarareao-eecron- . wn voaes aouaan assouas exceen eecrcaransorroeres.ecca, oservenu ~,orm cm2ass a moes e,ecero ene mcoron me comaraeoa susanancreaseo, cm2s wene o es menson eecrons are conneo awo- eecronsa en e ecreecr onaon mo-as a curea avnso, sauvce nran s a asn sauorna seauraon o veoeca vs-at~ x.7 cms. soe manua e oren vueenocces vsatn euxsce asso owa-z. oeer,e-reaown-voae c T ransorroeres oea- aearo maaae an anea su canerora eeecorronc orneoceo.:- wuenan aoaar- maoseu a canroer serve ase n a-ower, eacaa-aor.s aorweeveer,eeosn mnone aevace-s.aseees comcae somemes reerreo as “norma on”evcesave a neaveonre msooeevces meannane asence o an ae vo voae, anresen ae a conucve cannesorme muse aeeweoenereraerann o an source an, conseuen, a neave voae ecause osroem anor oreerro reaesones,eese cnannne anurnem o. resens susana ere aa-ase oam an e nesn caenesan are encounerene ensannce omen o maomes aenvces-.aseeses, wc are manuacurerom acaa- s are on avaaesen as c n-aceannnees areevucerser comcae e esn o oams an-ase s, we .ss unene evces.e., reo n-canne an-canne eesn. comemenar an ranssors are avaaeoacae ower, wean-sneeae,-ower oeraona amer“oam” an a- ana r amue mouaor a mae useomemen scosmec.oweer su-see,-no awer o-aomwer a, weanoar mouaor are o consruce enrerom n-canne,eenon mo-eoweer-,e wecearann are reera n-cannea -eecron-mo ranssorsa- sss.ors— comrses ana ex-emasearn em