Nekuvandudzwa kwetekinoroji yekutaurirana, nhepfenyuro inochengetwa yakakwira-frequency wedunhu bhodhi tekinoroji inoshandiswa zvakanyanya uye zvakanyanya, senge: isina waya pager, nhare mbozha, isina waya PDA, nezvimwe, mashandiro eradio frequency frequency inokanganisa zvakananga mhando yechigadzirwa chose. Chimwe chezvinhu zvikuru zvezvinhu zvakagadzirwa nemaoko ndeye miniaturization, uye miniaturization zvinoreva kuti kuwanda kwezvinhu zvakakwirira kwazvo, izvo zvinoita kuti izvo zvinhu (zvinosanganisira SMD, SMC, bare chip, nezvimwewo) zvinokanganisirana zvakanyanya. Kana chiratidzo chemagetsi chinokanganisa magetsi chikasabatwa zvakanaka, dunhu rese rinogona kusashanda nemazvo. Naizvozvo, maitiro ekudzivirira uye kudzvinyirira kukanganiswa kwemagetsi nemagetsi uye kugadzirisa kusangana kwemagetsi kwave musoro wakakosha mukugadzirwa kweRF wedunhu pcb. Iyo imwechete dunhu, dzakasiyana pcb dhizaini dhizaini, yayo yekuita indekisi ichasiyana zvakanyanya. Iri bepa rinokurukura maitiro ekuwedzera mashandiro edunhu kuzadzisa magetsi ekuenderana nezvinodiwa kana uchishandisa Protel99 SE software kugadzira rf redunhu PCB yemichindwe zvigadzirwa.

1. Kusarudzwa kweplate

Iyo substrate yemapuraneti wedunhu akadhindwa anosanganisira ehupenyu uye zvisikwa zvikamu. Izvo zvakakosha zvinhu zveiyo substrate ndeye dielectric inogara iri ε R, dissipation factor (kana dielectric kurasikirwa) Tan δ, yekupisa yekuwedzera coefficient CET uye hunyoro hwekumwa. ε R inokanganisa impedance yedunhu uye chiyero chekutapurirana. Kune akakwirira mafiriguru macircuit, iyo kubvumidzwa kushivirira ndiyo yekutanga uye inonyanya kukosha chinhu chekufunga nezvayo, uye iyo substrate ine yakaderera tendeti yekubvumidza kushivirira inofanirwa kusarudzwa.

2. pcb dhizaini maitiro

Nekuti Protel99 SE software yakasiyana neProtel 98 uye imwe software, maitiro ePBB dhizaini neProtel99 SE software inokurukurwa muchidimbu.

Nekuti Protel99 SE inotora iyo PROJECT dhatabhesi modhi manejimendi, inoiswa pachena muWindows 99, saka isu tinofanirwa kutanga tagadzira dhatabhesi faira kugadzirisa wedunhu schematic dhayagiramu uye pcb magadzirirwo akagadzirwa.

② Dhizaini yemufananidzo wedhisheni. Kuti uone kubatana kwenetiweki, zvese zvinoshandiswa zvinoshandiswa zvinofanirwa kunge zviripo mune raibhurari yezvinhu pamberi pesimba dhizaini; kana zvisina kudaro, izvo zvinodiwa zvinofanirwa kuitwa muSCHLIB uye zvochengetwa mufaira reraibhurari. Ipapo, iwe unongodaidza izvo zvinodiwa kubva kuraibhurari yezvinhu uye wozvibatanidza zvinoenderana nedhairekitori redunhu.

③ Mushure mekugadziriswa kwechirongwa, tafura yemagetsi inogona kuumbwa kuti ishandiswe muPCB dhizaini.

Dhizaini yePCB. A. CB chimiro uye saizi kutsunga. Chimiro uye kukura kwePCB zvakatemerwa zvinoenderana nenzvimbo yePBB mune chigadzirwa, saizi uye chimiro cheiyo nzvimbo uye kubatana pamwe nezvimwe zvikamu. Dhirowa chimiro chePCB uchishandisa iyo PLACE TRACK yekuraira pane MECHANICAL LAYER. B. Gadzira maburi ekumisikidza, maziso uye poindi poindi paPCB zvinoenderana nezvinodiwa neSMT. C. Kugadzirwa kwezvinhu. Kana iwe uchida kushandisa zvimwe zvakasarudzika zvinhu zvisipo muraibhurari yezvinhu, iwe unofanirwa kugadzira izvo zvisati zvagadzirwa. Maitiro ekugadzira zvikamu muProtel99 SE iri nyore. Sarudza iyo “GADZIRA LIBRARY” raira mune “DESIGN” menyu yekuisa iyo CHINYORWA kugadzira hwindo, wobva wasarudza iyo “NEW COMPONENT” yekuraira mune “TOOL” menyu kune DESIGN zvikamu. Panguva ino, ingo dhizaina inoenderana PAD pane imwe chinzvimbo uye uigadzirise muPAD inodikanwa (kusanganisira chimiro, saizi, dhayamita yemukati uye Angle yePAD, nezvimwe, uye maka zita rinoenderana repini rePAD) pa TOP LAYER pamwe nekuraira kwenzvimbo PAD uye zvichingodaro zvichienderana nechimiro uye saizi yechinhu chaicho chinhu. Wobva washandisa iyo PLACE TRACK yekuraira kudhirowa iwo ekunyanyisa kutaridzika kwechinhu mune TOP OVERLAYER, sarudza zita rechinhu uye uchengete mune raibhurari yezvinhu. D. Mushure mekugadzirwa kwezvinhu, marongero uye wiring zvinoitwa. Izvi zvikamu zviviri zvinokurukurwa zvakadzama pazasi. E. Tarisa mushure mekunge maitiro ari pamusoro apera. Kune rimwe divi, izvi zvinosanganisira kuongororwa kwedunhu musimboti, kune rimwe divi, zvinodikanwa kuti utarise kuenzanisa uye kuungana kweumwe neumwe. Iyo wedunhu musimboti inogona kuongororwa nemaoko kana otomatiki netiweki (iyo network yakaumbwa nesystem dhayagiramu inogona kufananidzwa nemambure akaumbwa nePCB). F. Mushure mekutarisa, dura uye kuburitsa iyo faira. MuProtel99 SE, iwe unofanirwa kumhanyisa iyo EXPORT rairo mune iyo FILE sarudzo yekuchengetedza iyo FILE kune yakatarwa nzira uye FILE (iyo IMPORT yekuraira ndeye KUTENGA FILE kuProtel99 SE). Ongorora: MuProtel99 SE “FILE” sarudzo “SAVE COPY AS…” Mushure mekurairwa kwaitwa, zita rakasarudzwa refaira harioneke muWindows 98, saka iyo faira haigone kuoneka muResource Manager. Izvi zvakasiyana ne “SAVE AS…” muProtel 98. Izvo hazvishande zvakafanana.

3. Zvimiro zvezvimiro

Nekuti SMT inowanzo shandisa infrared choto kupisa kuyerera kuwelda kune izvo zvinoriumba izvo, kumisikidzwa kwezvinhu zvinokanganisa mhando yeanosungirirwa majoini, uyezve zvinokanganisa goho rezvigadzirwa. Kune pcb dhizaini yerf redunhu, electromagnetic kuenderana kunoda kuti yega yedunhu module isabudise magetsi emagetsi mwero kusvika pazvinogona, uye iine humwe hunyanzvi hwekudzivirira remagetsi kukanganiswa. Naizvozvo, kurongedzwa kwezvinhu kunokanganisawo kupindira uye kugona kupokana nedunhu pacharo, iro rinoenderanawo nekuita kwedunhu rakagadzirwa. Naizvozvo, mune dhizaini yeRF wedunhu pcb, kuwedzera kune kurongeka kweyakajairika pcb dhizaini, isu tinofanirwa zvakare kufunga nezve kudzikisira kupindirana pakati pezvikamu zvakasiyana zveRF redunhu, kudzikisira kupindirana kwedunhu iri kune mamwe macircuit uye iyo anti-yekukanganisa kugona kwedunhu iro. Zvinoenderana neruzivo, mhedzisiro yeiyo rf redunhu inoenderana kwete kwete chete pane yekuita index yeRF redunhu bhodhi pachayo, asiwo nekubatana neCPU yekugadzirisa bhodhi kusvika padanho rakakura. Naizvozvo, mune pcb dhizaini, inonzwisisika dhizaini inonyanya kukosha.

General marongero musimboti: zvinoriumba zvinofanirwa kurongedzwa munzira imwechete kusvika pazvinogona, uye chakaipa chinotyisa chingaitika chinogona kuderedzwa kana kutodzivirirwa nekusarudza kwekutungamira kwePBB kupinda mune tini yakanyungudika system. Zvinoenderana neruzivo, iyo nzvimbo iri pakati pezvinhu inofanirwa kuve neinenge 0.5mm kuzadzikisa zvinodikanwa zvezvinhu zvinonyunguduka. Kana iyo nzvimbo pcbc board ichibvumira, iyo nzvimbo pakati pezvinhu inofanirwa kunge yakafara sezvinobvira. Kune mapaneru maviri, rimwe divi rinofanirwa kuve rakagadzirirwa SMD uye SMC zvinhu, uye rimwe divi rakasarudzika zvinhu.

Tarira mumamiriro:

* Chekutanga sarudza chinzvimbo cheinongedzo yezvinhu paPCB pamwe nemamwe mapcb board kana masisitimu, uye uteedzere kuwirirana kwezvinongedzo zvezvinhu (senge kutungamirwa kwezvinhu, nezvimwewo).

* Nekuda kweiyo diki vhoriyamu yezvigadzirwa zvinobatwa nemaoko, zvinhu zvakarongedzwa zvine mutsindo, saka pazvinhu zvakakura, chinonyanya kukosha chinofanira kupihwa kuona nzvimbo yakakodzera, uye nekufunga dambudziko rekubatana pakati peumwe neumwe.

* ongororo yekuongorora wedunhu mamiriro, wedunhu block block (senge yakakwira frequency gudzazwi redunhu, kusanganisa wedunhu uye demodulation wedunhu, nezvimwewo), kusvika pazvinobvira kupatsanura rinorema razvino chiratidzo uye isina kusimba yazvino chiratidzo, yakaparadzaniswa yedhijitari chiratidzo wedunhu uye chiratidzo cheanalogog dunhu, zadzisa basa rakafanana redunhu rinofanirwa kurongedzwa mune imwe nhanho, zvichidaro ichideredza chiratidzo chechiuno nzvimbo; Iyo yekusefa network yenhengo yega yega yedunhu inofanira kunge yakabatana padhuze, kuitira kuti kwete chete iyo radiation inogona kuderedzwa, asiwo mukana wekupindira unogona kuderedzwa, zvinoenderana neanopokana-nekukanganisa kugona kwedunhu.

* Boka maseru maseketi zvinoenderana nekunzwisisa kwavo mukubatana kwemagetsi ekushandisa mukushandisa. Izvo zvikamu zvedunhu zviri munjodzi yekupindirwa zvinofanirwa zvakare kudzivirira zvinokanganisa masosi (senge kupindirwa kubva kuCUU pane data rekugadzirisa bhodhi).

4. Wiring

Mushure mekuiswa kwezvinhu, wiring inogona kutanga. Iwo musimboti wekubatanidza ndewekuti: pasi pemamiriro eungano kuwanda, yakaderera-simbi wiring dhizaini inofanirwa kusarudzwa kusvika pazvinogoneka, uye chiratidzo wiring inofanirwa kunge iri gobvu uye yakatetepa sezvinobvira, izvo zvinoita kuti impedance ienderane.

Kune rf redunhu, iyo isina musoro dhizaini yechiratidzo mutsara rairo, upamhi uye mutsara nzvimbo zvinogona kukonzera kupindirana pakati pechiratidzo chiratidzo chekutumira mitsara; Uye zvakare, iyo system simba rekushandisa pachayo zvakare iripo ruzha kupindira, saka mukugadzirwa kweRF redunhu pcb inofanirwa kutariswa zvakazara, zvine musoro wiring.

Kana wiring, wiring yese inofanira kunge iri kure nemuganho wePCB board (ingangoita 2mm), kuti isakonzere kana kuve nenjodzi yakavanzwa yekutsemuka kwetambo panguva yekugadzirwa kwebhodhi rePCB. Iyo tambo yemagetsi inofanirwa kunge yakafara sezvinobvira kudzikisa kuramba kwesimbi. Panguva imwecheteyo, iko kutungamira kwetambo yemagetsi uye mutsetse wepasi unofanirwa kunge uchienderana necheni yekufambisa kwedata kunatsiridza kugona-kupokana kugona. Mitsetse yemasaini inofanirwa kuve ipfupi sezvinobvira uye huwandu hwemaburi hunofanira kudzikiswa nepazvinogona napo. Iyo ipfupi kubatana pakati pezvinhu, zvirinani, kudzikisa kugoverwa kwemaparamu uye kupesana kwemagetsi pakati pemumwe; Kune mitsara yemasaini isingaenderane inofanirwa kunge iri kure kubva kune mumwe nemumwe, uye edza kunzvenga mitsara inoenderana, uye mumativi maviri akanaka ekushandisa kwetambo dzekutenderera dzakaenzana; Wiring inoda kero yekona inofanirwa kunge iri 135 ° Angle sezvazvinofanirwa, dzivisa kutendeuka makona ekurudyi.

Iyo tambo yakabatana yakanangana nepad haifanire kunge yakafararira, uye mutsetse unofanirwa kunge uri kure nezvinhu zvisina kubatana sezvazvinogona kudzivirira dunhu pfupi; Makomba haafanire kudhonzwa pazvinhu, uye anofanirwa kunge ari kure kure nezvinhu zvisina kudamburwa nepose pazvinogona kudzivirira hutachiona, kuenderera kwakanangana, dunhu pfupi uye zvimwe zviitiko mukugadzira.

Mune pcb dhizaini yerf wedunhu, iyo chaiyo wiring yemagetsi tambo uye yepasi waya inonyanya kukosha, uye zvine musoro dhizaini ndiyo inonyanya kukosha nzira yekukunda yemagetsi kupindira. Zvakawanda zvekuvhiringidza zvinyorwa paPCB zvinogadzirwa nemagetsi uye waya yepasi, pakati peiyo tambo yepasi inokonzeresa kupindirana kweruzha.

Chikonzero chikuru nei waya yepasi iri nyore kukonzera kukanganiswa kwemagetsi nemagetsi imhedheni yetambo yepasi. Kana yazvino ichiyerera ichipinda muvhu, magetsi anozogadzirwa pasi, zvichikonzera ivhu repasi zvino, kuumba kupindirana kwechiuno chevhu. Kana macircuit akawanda achigovana chidimbu chimwe chetambo yevhu, yakajairika impedance coupling inoitika, zvichikonzera izvo zvinozivikanwa sevhu repasi. Naizvozvo, kana uchibaya waya yepasi yeiyo RF redunhu pcb, ita:

* Chekutanga pane zvese, dunhu rakakamurwa kuita mabhuroko, rf redunhu rinogona kuve rakakamurwa kuita yakakwira frequency kukwidziridzwa, kusanganisa, kudzikisira, vibration yemuno uye zvimwe zvikamu, kupa yakajairika ingangoita poindi yedunhu rega redunhu module redunhu, kuitira kuti iyo chiratidzo chinogona kutapuriranwa pakati penzvimbo dzakasiyana dzemamodule. Iyo inozopfupikiswa panzvimbo iyo iyo RF redunhu pcb inosanganisirwa nevhu, kureva zvakapfupiswa panzvimbo huru. Sezvo paine chete poindi yekureva, hapana yakajairika impedance yekubatanidza uye nekudaro hapana kuwiriranwa kwekukanganisa dambudziko.

* Dhijitari nzvimbo uye nzvimbo yeanalogog sezvinobvira pasi pevhu waya kupatsanurwa, uye dhijitari pasi uye analoginen pasi kupatsanura, pakupedzisira kwakabatana kune magetsi magetsi pasi.

* Tambo yepasi muchikamu chega chega chedunhu inofanirwa zvakare kutarisisa kune imwechete poindi yekumisikidza musimboti, kurerutsa chiratidzo chiuno nzvimbo, uye inoenderana firita redunhu kero padhuze.

* Kana nzvimbo ichibvumidza, zvirinani kusiyanisa module yega yega netambo yepasi kudzivirira chiratidzo chekubatanidza chiratidzo pakati peumwe neumwe.

5. Mhedziso

Iko kiyi yeRFBB dhizaini iri munzira yekudzora kugona kwemwaranzi uye maitiro ekuvandudza kugona-kupindira kugona. Kurongeka kunonzwisisika uye wiring ndiyo vimbiso yekugadzira RF PCB. Maitiro akatsanangurwa mupepa rino anobatsira kusimudzira kuvimbika kweRF wedunhu pcb dhizaini, kugadzirisa dambudziko rekukanganiswa nemagetsi, uye kuzadzisa chinangwa chekuenderana nemagetsi.