Uyilo lwe-RF PCB ukusuka kwiTheory ukuya kwiPractice: Isikhokelo soBunjineli esipheleleyo nguRich Full Joy
Kwishishini le-elektroniki elitshintsha ngokukhawuleza namhlanje, Uyilo lwe-PCB ye-RF (Radio Frequency)idlala indima ebalulekileyo ekuvumeleni usetyenziso olukhawulezayo nolusebenzisa amaxesha amaninzi olufana Unxibelelwano lwe-5G, IoT, inqwelo-moyakunye iradar yeemotoNjengenkampani enamashumi eminyaka yamava anzulu kubunjineli be-PCB obusebenza rhoqo, Uvuyo Olupheleleyo Olutyebileyoiyazingca ngokwabelana ngeembono zeengcali zabayili be-PCB abafuna ukuqonda imingeni yoyilo lwebhodi ye-RF.
Imiqondiso ye-RF ngokubanzi isebenza kwi Uluhlu lwe-300MHz ukuya kwi-300GHz, kwaye ukuyila i-PCB yeefrikhwensi ezinjalo kwazisa imingeni eyahlukileyo engabonakaliyo kwiinkqubo zesantya esiphantsi. Oku kuquka ukuthembeka kwesignali, Ucinezelo lwe-EMI, ukusebenza kwezinto ze-dielectrickunye ukuhambelana okuchanekileyo kwe-impedanceKule sikhokelo sibanzi, sihlola iindlela ezilungileyo kunye namaqhinga oyilo lokwakha ii-PCB ze-RF ezinokuthenjwa nezisebenzayo.
Ukuqonda ii-RF PCBs
I-An I-RF PCByibhodi yesekethe eprintiweyo esebenza kwiifrikhwensi zerediyo, idla ngokudibanisa zombini yedijithalikwaye izinto ze-analog, bakha oko kwaziwa ngokuba yi ibhodi yesignali exutyiweyoUmceli mngeni apha usekwe ekulawuleni unxibelelwano phakathi kweentlobo zesignali, njengoko uyilo olungafanelekanga lunokubangela ukuphazamiseka okukhulu kunye neengxaki zokubonakalisa.
Kuxhomekeka kwi ukuphathwa kwamandla, ii-RF PCBs zinokwahlulwa zibe:
- Ii-PCB zeRF ezinamandla aphantsi, ezibeka phambili ingxolo ephantsi kunye novakalelo lwesignali
- Ii-PCB zeRF ezinamandla aphezulu, ezifuna uyilo oluqinileyo lobushushu kunye nokuzinza kwamandla
Udidi ngalunye lufuna izinto ezikhethekileyo ekufuneka ziqwalaselwe ngexesha loyilo.
Izikhokelo eziphambili zoYilo lwe-RF PCB
1, Ukukhethwa kwezinto: Isiseko sokuSebenza kweRF
Ukukhethwa kwezinto ezisetyenziswa kwi-substrate kuchaphazela ngokuthe ngqo ukuthembeka kwesignali, uzinzo lobushushukunye ukuhambelana kwe-impedancekuluhlu olubanzi lweefrikhwensi. Iiparameter ezibalulekileyo ziquka:
I-Coefficient of Thermal Expansion (CTE)
I-CTE kufuneka ihambelane nezinto ezifakelweyo. Amanqanaba okwandiswa okungafaniyo anokukhokelela kwiijoyinti ze-solder eziqhekekileyo okanye ukuqhekeka kwe-trace—ingakumbi kwi ii-PCB ze-RF ezineengqimba ezininziOku kubalulekile kumacandelo athembekileyo kakhulu afana inqwelo-moyakwaye ucingo.
I-Dielectric Constant (Dk)
UDkt uchaza indlela imiqondiso esasazeka ngokukhawuleza ngayo. Iinkqubo zeRF zihlala zifuna izixhobo zeDk eziphantsi nezizinzileyoukulawula ngokuchanekileyo i-impedance kunye nokunciphisa ukubonakaliswa. I-5G kunye ne-millimeter-waveizicelo, izixhobo ezisezantsi zeDk ezifana RO4350Bokanye RT/duroidzikhethwayo.
Into yokusasaza (Df)
I-Df ibonisa ukulahleka kwe-dielectric. Kwi-transmission ye-frequency ephezulu, i- i-Df ephantsiKubalulekile ukunciphisa ukuncitshiswa kwesignali kunye nokugcina ubuqotho be-waveform ecocekileyo kumgama.
Ingcebiso yobungcali:Izixhobo ezifana RO4000, RO3000kunye Iilaminate ezisekelwe kwi-PTFEziimpawu zoshishino zee-RF PCBs. Iifoyile zekopolo ezithambileyo ezinoburhabaxa obuphantsi zikwanceda ekunciphiseni ukulahleka kwesignali ngenxa yempembelelo yesikhumba.
2, Uyilo oluCwangcisiweyo lweLayer Stackup
Ukufakwa kwee-layer kuchaphazela ukucinezelwa kwe-EMI, uzinzo lwe-impedance, kunye nokusebenza kakuhle kwendlela yokuhambisa isignali.
Isithuba seCandelo
Izixhobo ze-RF kufuneka zibekwe ngokwemisebenzi yazo kunye nenqanaba lamandla. Gcina indawo eyaneleyo phakathi izixhobo ezinamandla aphezulukwaye iisekethe ze-analog ezibuthathakaukunciphisa ukuphazamiseka okuhlangeneyo kunye nokuphucula ukusasazwa kobushushu.
Imikhondo Ezimeleyo
Ziphephe iintshukumo ezidadayo okanye ezithe saa, ezisebenza njenge ii-eriyali ezingalawulwayoUkuba akunakuphepheka, zinciphise ngokukhusela umhlaba okanye ngokulawula ubude.
Ukubekwa kweCandelo leQhinga
Beka izinto ngokwemiqathango ukuhamba kwesiginalikwaye amaqela asebenzayo. Unxibelelwano olufutshane lunciphisa ukungena kwe-parasitic kunye nokulahleka kwesignali. Vumela indawo eyaneleyo yeeprobe zovavanyo kunye nokufikelela kwakhona.
Ubalo lweeLayer kunye noLungiselelo
Sebenzisa umaleko ophezulu kwi-RF routing, ii-ground planes embindini, kunye nee-bottom layers kwi-digital okanye kwi-low speed traces. iindlela zokubuyela emhlabeni oqinileyoukunciphisa i-loop inductance kunye ne-EMI.
Ukudibanisa Amandla
I-IC nganye ifuna ukwahlulahlula okucwangcisiweyo kwindawo ethileukucoca ingxolo yamandla. Beka ii-capacitor zokudibanisa kufutshane neepini zamandla, usebenzisa amaxabiso afanelekileyo kwiimpawu ze-IC ze-frequency kunye ne-impedance.
3, Indlela yeSignali yeRF echanekileyo
Indlela yokuhambisa i-RF yisayensi. Injongo kukugcina ukuthintela okulawulwayokwaye ukonakala okuncinci kwesiginali.
Gcina Imizila Imfutshane
Imigca emifutshane ilingana nokungacaci kakuhle kunye nokubonakalisa okuphantsi. Kuphephe ukujika okungafunekiyo kwindlela yokuhambisa.
Thintela i-Parallel Routing
Ziphephe ii-RF ezihambelanayo kunye nee-non-RF traces. Amasimi adibeneyo akhokelela kwi incoko engqukuvaUkuba akunakuphepheka, yongeza isithuba kwaye ufake isikhuselo somhlaba.
Chaza Amanqaku Ovavanyo
Amanqaku ovavanyo kufuneka abe zahlulwe kwimigca yesignaliukuthintela ukuphazamiseka kwesiginali ngexesha lokuqinisekiswa.
Iibhendi ezikrelekrele
Iikona zeRF kufuneka zibe ijikelezwe okanye ibhityile, ayibukhali. Gcina irediyasi egobileyo ubuncinane Ububanzi be-trace obuyi-2xukuthintela ukubonakaliswa kwesiginali.
Inzuzo kaRich Full Joy kuyilo lweRF PCB
Ngaphezulu Iminyaka engama-20 yamava obunjineli, Uvuyo Olupheleleyo Olucebileyo luzisa:
- Ubuchule kwi Iibhodi zeRF ezineziteya ezininzi
- Iqinisekisiwe ulawulo lwe-impedanceukusebenza rhoqo
- Ubuchule be ukucutshungulwa kwezinto ezilahlekileyo kancinci
- Ithembekile I-DFM (Uyilo Lokwenziwa Kwezinto)uphononongo lokususa iziphene zoyilo kwangethuba
- Inkxaso eyenziwe ngokwezifiso kwizicelo ezikwi 5G, irada, i-satcomkunye inqwelo-moya
Nokuba wakha imodyuli ye-antenna encinci kakhulu okanye i-transceiver yesathelayithi ebalulekileyo, sibonelela izisombululo ze-RF PCB ezilungiselelwe wenaixhaswa yimigangatho yeshishini lehlabathi.
IiWebinars ezizayo zika-Epreli: Vula ubuchule bakho boYilo lwe-RF PCB
Ngaba ukulungele ukungena nzulu kulawulo lomgangatho wemveliso ye-RF? Joyina iRich Full Joy kunye neengcali eziphambili ngo-Epreli:
Ngomhla we-14 ku-Epreli ukuya ku-14:00
I-Multilayer RF PCB Lamination: Iiparameter eziphambili kunye noLawulo lweNzuzo
- Imodeli ye-lamination yobushushu obuphindwe kathathu, enoxinzelelo oluphindwe kathathu
- Nciphisa ukunyamezelana kwe-impedance ukusuka kwi-±10% ukuya kwi-±5%
- Ukunyusa isivuno se-RF PCB lamination kwi-aerospace nge-32%
Ngomhla we-16 ku-Epreli ukuya ku-16:00
Iinkqubo zokugqiba umphezulu wee-RF PCBs: Fumana ukuSolderability okuphezulu
- I-matrix yokuthelekisa: I-ENIG vs. I-OSP vs. Isilivere Entywilisiweyo
- Uhlalutyo lwezizathu zokusilela kwe-soldering enkulu kwiibhodi ze-telecom
- Iiparamitha zokugqiba umphezulu ezilungiselelwe ukusetyenziswa okuthembekileyo kakhulu
Ngomhla we-18 ku-Epreli – 10:00
Ukuqonda iMigangatho ye-RF PCB: Ukuhlangabezana neNkcukacha eziQolileyo zoShishino
- Uhlalutyo olunemifanekiso lwezikhokelo ze-IPC-2223 ezisetyenziswa rhoqo
- Ulawulo lokuchaneka kobungakanani kumanqanaba e-millimeter-wave
- Isikhokelo esisebenzayo sokuthobela iRoHS 3.1 kwii-RF PCBs
Ngomhla wama-21 ku-Epreli – 14:00
Ukulawula Umgangatho we-RF PCB ukusuka kuMthombo woYilo
- Uluhlu lokuhlola lwe-DFM olunamanqaku angama-28
- Ukulinganisa ukuthembeka kwesignali njengesihluzi sangaphambi kokuveliswa
- Isifundo setyala: Ukuqaliswa kwe-PCB yesikhululo se-5G esingenaziphene
Joyina iNtshukumo:
- Landela iRich Full Joy ukuze ufumane uhlaziyo lwangempela
- Phawula inkxalabo yakho ephambili yoyilo lweRF
- Thumela kwakhona kwaye ubhale iinjineli ezi-3 ukuze uvule i-e-mail yethu ekhethekileyo Iphepha Elimhlophe Lolawulo Lomgangatho weRF PCB
