Kwicandelo lobunjineli ekhoyo ngoku, ukuphuculwa okuqhubekayo kwe-chip ukudibanisa kuye kwenza ukuba iqhele ukudibanisa enye okanye ngaphezulu kwenkqubo yerediyo yerediyo kwi-chip encinci.Inkqubela phambili yetekhnoloji izise malunga nokwakha izinto ezibonakalayo, ngakumbi ukwamkelwa kwabantwana abangamamkeli-ukuba kwaye iphantsi - ukuba iphantsi.Olu lwakhiwo lubathandeka ngokulula kwaye ukupheliswa kwesidingo semizila yangaphandle eyamkelayo.Nangona kunjalo, nangona icandelo le-RF lenze lula, ukuba ukulungelelaniswa kwenqanaba lokuqhubekeka kwedijithali kuya kuba nzima kwaye kubalulekile.Oku kukhokelela kumbuzo ophambili: Zeziphi iimpawu ezingezozopiso kwizixhobo zokwenyani kuchaphazela intsebenzo yeenkqubo ze-RF?
Into yokuqala ekufuneka sijonge kuyo ingxolo yengxolo nengxolo.Nasiphi na isixhobo se-elektroniki siya kuvelisa ingxolo engasebenziyo ngenxa yokuhamba ngokungekho mthethweni kwee-elektroni, oko kukuthi, ingxolo ye-thermal.Umzekelo, isithintelo esiguqukayo r kwiqondo lobushushu t k liya kuvelisa ivoldage yengxolo.Ukuba umthwalo wokurhoxiswa uthathwa njengelingana ngokwayo, igalelo lamandla elingxolo kumthwalo lihlala livezwa njenge KTB.Ngaphandle kokuqwalaselwa kwenkqubo ye-bandwidth, ukuba iqondo lobushushu T li-290K, amandla engxolo iya kuba yi--174dbm / hz.Kwangelo xesha, ingxolo yentsimbi (i-1 / f ingxolo) kwizixhobo ezisebenzayo azinakuhoywa.Kuba ifumaneka kufutshane ne-DC yangoku
Ukuqwalaselwa okulandelayo yingxolo yenqanaba le-oscillator yendawo (LO).Imveliso ye-Oscillator phantsi kweemeko ezifanelekileyo zinokumelwa ngumsebenzi we-Delta kwi-Deltain, kodwa kwingxolo yesiseko senqanaba ihlala ibangela isiketi kumzobo wemveliso.Impembelelo yale ngxolo yeSigaba kwiTransceiver iboniswa ikakhulu kwimiba emibini: Okokuqala, ukwanda kwengxolo ye-band ebangelwa kukuphinda-phinda kwebhendi yengxolo ye-Oscilla) kunye nomqondiso;Okwesibini, i-band ye-band ebangelwa kukuxuba komqondiso wokuphazamiseka kunye nengxolo ye-Oscillator yendawo.Ingxolo yonyuka, eyaziwa ngokuba ngumxube we-retiprocal.
Ukongeza, isampulu ye-saminal ikwayinto ebalulekileyo.Abaguquli be-analog-to-dijithali (ii-ADCs) kunye nabaguquleli bedijithali (i-DACS) benze umda phakathi kwe-alogy kunye nedijithali eTranscelin.Kwinkqubo yokuguqula phakathi kwezi fom zimbini, iwotshi yesampulu iyafuneka, eyokomqondiso.Kuba umqondiso we-osciciption uya kuvelisa ingxolo yeSigaba, ebonakala njenge-jitter ngexesha le-Domain, ekhokelela kwiimpazamo zesampulu kunye nengxolo yokuqhubeka nengxolo.
Izinto ezilandelayo zokujonga kukho i-onriers frequenct ye-offset (CFO) kunye nesampulu yokufika kwesampulu (SFA).Kwiinkqubo zonxibelelwano, i-racriers frequency idla ngokuveliswa ngumthi otshixiweyo weSigaba.Nangona kunjalo, ngenxa yomahluko omncinci kwi-Carrier Rier Remitter (TX) kunye noMamkeli (i-RX), ukuguqulwa rhoqo emva kokuguqulwa komvuzo kuya kuba nempazamo ye-Prequency Roverment, i-CFO).Kwangelo xesha, kusenokufumaneka umahluko kwiSampundo ye-ADC kunye ne-DAC, ebizwa ngokuba yisampulu ye-APPECTATE (SFA), eya kuthi ineempembelelo kwinkqubo yokusebenza kwenkqubo.
Xa ujonga intsebenzo yenkqubo ye-RF, enye kufuneka ibonwe ngengxolo yokugcwalisa kunye nokuncitshiswa kwee-DACs kunye nee-ADCs.Xa usenza i-anag-to-to-to-to-didital yedijithali, ezi zixhobo zivelisa ingxolo yokudityaniswa, ethi ivelise i-ratiol-to-ingqokelela yengxolo yengxolo (i-snr).Ke ngoko, xa uyila umamkeli, ihlala iyimfuneko ukubonelela ngenzuzo eyaneleyo kwisiphelo se-ADC ukuqinisekisa ukuba inqanaba lengxolo le-adc ngokwayo lincinci ukuba lingakhathalelwanga i-Intermal Ingqokelela yengxolo ye-thermal ngokwayo.Isiphaluka sokuphela).Isiphumo soMlinganiso we-ADC siyakubeka umda kwinqanaba lamandla encopho (i-PAPPP) yomqondiso, ngaloo ndlela iwohloka umqondiso womqondiso.
Okokugqibela, kukho ukungalingani kwe-quadraund kunye nesixhobo esingafaniyo.Ngexesha lenkqubo ye-Upcoversion okanye inkqubo yedolophu, umxube we-quadctor osetyenzisiweyo unokufumana i-Mismatch kunye neSigaba se-Mismatch kwi-I kunye ne-QUS, esiya kuthi sivelise ingxolo yomqondiso.Ukungathobeki kwesixhobo, ngakumbi ukungabinamsebenzi, kubaluleke kakhulu ekuphatheni ukuphazamiseka okukhulu, nto leyo edla ngokufowunela ukungabinakho ukugonyazwa.Ezi zinto zimisela ukusebenza kweenkqubo ze-RF, kwaye kubalulekile ukuba iinjineli ze-elektroniki ziqonde kwaye zizezile ezi zinto ukwenzela ukuba zenze izigqibo ezifanelekileyo xa ziyifumana iinkqubo ze-RF xa ziyifumana iinkqubo ze-RF xa ziyilo kwaye ziyilo kwaye zilungelelanise iinkqubo ze-RF xa ziyilo kwaye ziyilo kwaye zilungelelanise iinkqubo ze-RF.