Usibye inzitizi ya RF yerekana ubutumwa bwa RF, hashyizweho imiterere yamakuru ya RF PCB imwe nayo akeneye gusuzuma ibibazo nko gutandukana nkubushyuhe, ubungubu, ibikoresho, imiterere ningaruka zuruhu. Mubisanzwe turi mu nzego kandi dutondekanya imbaho nyinshi zacapwe. Kurikiza amahame shingiro:
A) Buri cyiciro cya RF PCB gitwikiriye ahantu hanini nta ndege. Igice cyo hejuru no hepfo cyegeranye cya RF Wiring Igice kigomba kuba indege mbi.
Nubwo ari inama ya digitale-analog, igice cya digitale kirashobora kugira indege yamashanyarazi, ariko agace ka RF biracyafite ubushobozi bwo kubaha umwanya munini.
B) Kumwanya wa RF inshuro ebyiri, urwego rwo hejuru ni urwego rwikimenyetso, kandi urwego rwo hasi nindege.
Ubuyobozi bune bwa RF Mubihe byihariye, imirongo imwe yerekana ibimenyetso irashobora gukoreshwa kumurongo wa gatatu. Ibindi byinshi byo ku mbaho za RF, nibindi.
C) kuri rf inyuma, hejuru hejuru kandi yo hepfo nubutaka. Kugirango ugabanye amakosa yatewe na vias nabahuza, uwa kabiri, icya gatatu, icya kane, icya kane, icya kane, kandi icya gatanu, kandi icya gatanu, kandi icya gatanu, Koresha ibimenyetso bya Digitale.
Ibindi bice byumurongo hejuru yubuso bwose hari hepfo yerekana ibimenyetso. Mu buryo nk'ubwo, ibice bibiri byegeranye by'ikimenyetso cya RF bugomba kuba butaka, kandi buri gice kigomba gutwikirwa ahantu hanini.
D) kubushobozi buke, burebure-burebure bwa rf, umurongo nyamukuru wa RF ugomba gushyirwa kumurongo wo hejuru kandi uhuze numurongo wagutse.
Ibi bifasha gutandukanya ubushyuhe no gutakaza imbaraga, kugabanya amakosa yatsinzwe.
E) Indege y'imbaraga zo igice cya digitale igomba kuba hafi yindege hanyuma itondekanya munsi yindege.
Muri ubu buryo, ubushobozi hagati yisahani ebyiri irashobora gukoreshwa nkumufasha woroshye kugirango ubone imbaraga, kandi icyarimwe, indege yubutaka irashobora kandi gukingira imirasire ikwirakwizwa ku ndege.
Uburyo bwihariye bwo gufata hamwe nibisabwa kugabana Indege birashobora kwerekeza kuri "20050818 ibipimo byateganijwe hamwe nishami rishinzwe gushushanya rya EDA, kandi ibipimo kumurongo bizatsinda.
2
RF Ubuyobozi busabwa
2.1 Inguni
Niba ibimenyetso bya RF bijya ku mpande eght, ubugari bufatika ku mfuruka biziyongera, kandi impetomu izahagarara kandi itanga ibitekerezo. Kubwibyo, birakenewe guhangana ninguni, cyane cyane muburyo bubiri: gukata mfuruka no kuzenguruka.
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(2) Radiyo ya arc inguni igomba kuba nini bihagije. Muri rusange, menya neza: r> 3w.
2.2 microstrip wiring
Igice cyo hejuru cya PCB gitwara ibimenyetso bya RF, hamwe nigice cyindege munsi yikimenyetso cya RF kigomba kuba indege yuzuye kugirango ibe indege yuzuye. Kugirango habeho ubusugire bwuburyo bwumurongo wa microstrip, hari ibisabwa bikurikira:
. Kandi muri 3w, ntihagomba kubaho vias idafite ishingiro.
(2) Intera iri hagati yumurongo wa microstrip hamwe nurukuta rukingira rugomba kubikwa hejuru ya 2w. (Icyitonderwa: w ni ubugari bwumurongo).
. Udukoryo twimbwa ni munsi ya λ / 20, kandi biratunganijwe.
Inkombe yubutaka umuringa igomba kuba yoroshye, iringaniye, kandi nta bushyuhe bukabije. Birasabwa ko inkombe yubutaka-Clad irenze cyangwa ingana nubugari bwa 1.5W cyangwa 3h uhereye kumurongo wa microstrip umurongo, na h yerekana ubunini bwa microstrip sundrate.
(4) Birabujijwe kubimenyetso bya RF kugirango bambuke icyuho cyindege yindege ya kabiri.
2.3 Kurambarara
Ibimenyetso kuri radiyo rimwe na rimwe byanyuze hagati ya PCB. Ikunze kugaragara kuva kumurongo wa gatatu. Ibice bya kabiri na kane bigomba kuba indege yuzuye, ni ukuvuga imiterere ya eccentric stripline. Ubunyangamugayo bwumurongo wa Strip bugomba kwemezwa. Ibisabwa ni:
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(2) Birabujijwe kuri rf stripline kugirango yambuke icyuho hagati yindege zo hejuru no hepfo.
. Udukoryo twimbwa ni munsi ya λ / 20, kandi biratunganijwe. Inkombe yumuringa wumuringa igomba kuba yoroshye, igorofa kandi nta buhamba bukabije.
Birasabwa ko inkombe yuruhu rwa Clad-Clad rurenze cyangwa angana nubugari bwa 1.5w cyangwa ubugari bwa 3h uhereye kumurongo wa strip. H Yerekana umubyimba wose wibice byo hejuru no hepfo yumurongo wa Strip.
. Blowed.