Ibice bya pasiporo mubice bya RF
Kurwanya, ubushobozi, Antenasi. . . . Wige ibijyanye na pasiporo ikoreshwa muri sisitemu ya RF.
Sisitemu ya RF ntabwo itandukanye cyane nubundi bwoko bwumuriro wamashanyarazi. Amategeko amwe ya fiziki arakurikizwa, nuko rero ibice byibanze bikoreshwa mubishushanyo bya RF nabyo tubisanga mumuzunguruko wa digitale hamwe numuyoboro muke wa analogi.
Nyamara, igishushanyo cya RF gikubiyemo urutonde rwihariye rwibibazo nintego, hanyuma rero ibiranga nogukoresha ibice bisaba kwitabwaho bidasanzwe mugihe dukora murwego rwa RF. Na none, imiyoboro imwe ihuriweho ikora imikorere yihariye cyane ya sisitemu ya RF-ntabwo ikoreshwa mumashanyarazi make kandi ntishobora kumvikana neza nabafite uburambe buke mubuhanga bwo gushushanya RF.
Dukunze gutondekanya ibice nkibikorwa cyangwa byoroshye, kandi ubu buryo bufite agaciro kamwe mubice bya RF. Amakuru araganira kubice bya pasiporo byumwihariko bijyanye na sisitemu ya RF, kandi page ikurikira ikubiyemo ibice bikora.
Ubushobozi
Ubushobozi bwiza bwatanga imikorere imwe kubimenyetso bya 1 Hz na 1 GHz. Ariko ibice ntabwo ari byiza, kandi kutagira ubushobozi bwa capacitor birashobora kuba ingirakamaro kuri radiyo nyinshi.
"C" ihuye na capacitor nziza nziza yashyinguwe mubintu byinshi bya parasitike. Dufite imbaraga zitagira umupaka hagati yisahani (RD), kurwanya urukurikirane (RS), inductance yuruhererekane (LS), hamwe nubushobozi bwa parallel (CP) hagati yipaki ya PCB nindege yubutaka (turakeka ibice byubuso-hejuru; ibindi kuri ibi nyuma).
Ikigaragara cyane kidasanzwe mugihe dukorana nibimenyetso byinshi-ni inductance. Turateganya ko impedance ya capacitori igabanuka bidasubirwaho uko inshuro ziyongera, ariko kuba inductance ya parasitike itera impedance kumanuka kumurongo wikurikiranya hanyuma ugatangira kwiyongera:
Abarwanya, n'abandi.
Ndetse na résistoriste irashobora kuba ikibazo kuri frequency nyinshi, kubera ko ifite inductance yuruhererekane, ubushobozi bwa parallel, hamwe nubushobozi busanzwe bujyanye na padi ya PCB.
Kandi ibi bizana ingingo yingenzi: mugihe ukorana numuyoboro mwinshi, ibintu byumuzunguruko wa parasitike biri hose. Nuburyo bworoshye cyangwa bwiza ibintu birwanya ibintu, biracyakenewe gupakirwa no kugurishwa kuri PCB, kandi ibisubizo ni parasitike. Kimwe nikindi kintu icyo aricyo cyose: niba gipakiye kandi kigurishwa kubibaho, ibintu bya parasitike birahari.
Crystal
Intego ya RF ni ugukoresha ibimenyetso byihuta cyane kugirango bitange amakuru, ariko mbere yuko dukoresha dukeneye kubyara. Nkubundi bwoko bwumuzunguruko, kristu nuburyo bwibanze bwo kubyara umurongo uhamye.
Nyamara, muburyo bwa digitale kandi buvanze-ibimenyetso, akenshi usanga imirongo ishingiye kuri kristu idasaba neza na neza ko kristu ishobora gutanga, bityo rero biroroshye guhinduka uburangare kubijyanye no gutoranya kristu. Inzira ya RF, itandukanye, irashobora kuba ifite ibisabwa byinshyi, kandi ibi ntibisaba gusa umurongo wambere wibisobanuro gusa ahubwo binashoboka guhagarara neza.
Inshuro yinyeganyeza ya kristu isanzwe yunvikana nubushyuhe butandukanye. Ihungabana ryinshuro zitera ibibazo kuri sisitemu ya RF, cyane cyane sisitemu izagerwaho nuburyo butandukanye mubushyuhe bwibidukikije. Rero, sisitemu irashobora gusaba TCXO, ni ukuvuga, ubushyuhe bwishyurwa na kristu oscillator. Ibi bikoresho birimo umuzenguruko wishyura inshuro za kristu zitandukanye:
Antenasi
Antenna ni ikintu cyoroshye gikoreshwa muguhindura ibimenyetso byamashanyarazi ya RF mumirasire ya electronique (EMR), cyangwa ubundi. Hamwe nibindi bice hamwe nabayobora turagerageza kugabanya ingaruka za EMR, hamwe na antene tugerageza kunonosora ibisekuru cyangwa kwakira EMR kubijyanye nibisabwa.
Ubumenyi bwa Antenna ntabwo bworoshye. Ibintu bitandukanye bigira ingaruka muburyo bwo guhitamo cyangwa gushushanya antenne ikwiriye kubikorwa runaka. AAC ifite ingingo ebyiri (kanda hano na hano) zitanga intangiriro nziza kubitekerezo bya antenna.
Imirongo myinshi iherekejwe nibibazo bitandukanye byo gushushanya, nubwo igice cya antenne ya sisitemu gishobora kuba ikibazo gike cyane uko inshuro ziyongera, kuko imirongo myinshi yemerera gukoresha antene ngufi. Muri iki gihe, birasanzwe gukoresha haba "chip antenna," igurishwa kuri PCB nkibisanzwe bisanzwe-bigizwe hejuru, cyangwa antenne ya PCB, ikorwa mugushyiramo ibimenyetso byabugenewe muburyo bwa PCB.
Incamake
Ibice bimwe nibisanzwe mubikorwa bya RF gusa, nibindi bigomba guhitamo no gushyirwa mubikorwa witonze kuberako imyitwarire yabo idahwitse.
Ibice bya pasiporo byerekana inshuro zidasanzwe igisubizo nkibisubizo bya parasitike na capacitance.
Porogaramu ya RF irashobora gusaba kristu zisobanutse neza kandi / cyangwa zihamye kuruta kristu isanzwe ikoreshwa mumuzunguruko.
Antenne nibintu byingenzi bigomba guhitamo ukurikije ibiranga nibisabwa na sisitemu ya RF.
Si Chuan Keenlion Microwave ihitamo rinini muburyo bwagutse kandi bwagutse, bikubiyemo imirongo kuva kuri 0.5 kugeza kuri 50 GHz. Byaremewe gukora kuva kuri 10 kugeza 30 watt yinjiza muri sisitemu yohereza 50-ohm. Microstrip cyangwa stripline ibishushanyo birakoreshwa, kandi bigashyirwa mubikorwa byiza.
Igihe cyo kohereza: Ugushyingo-03-2022
