Kugadzira uye Kugadzira PCB Yepamusoro-soro: Zvinhu Zvinokosha

Mabhodhi edunhu akadhindwa akakwira-frequency(PCBs) zvinhu zvakakosha mumabasa akasiyana-siyana, anosanganisira kutaurirana nefoni, radar systems, wireless communication, uye high-speed data processing. Kushanda kwemaPCB aya kunonyanya kukanganiswa nezvinhu zvakasarudzwa pakugadzirwa nekuunganidzwa kwawo. Chinyorwa chino chinoongorora zvinhu zvikuru zvinoshandiswa mu dhizaini uye musangano wePCB wepamusoro-soro, vachisimbisa hunhu hwavo uye zvakanakira.

• Zvishandiso zveBasi: Chinhu chepasi chinoumba hwaro hwePCB ine frequency yakakwira uye chinoita basa guru pakuona hunhu hwayo hwemagetsi. Zvimwe zvezvinhu zvepasi zvinonyanya kushandiswa mumaPCB ane frequency yakakwira zvinosanganisira:
• FR-4: FR-4 ine epoxy resin fiberglass composite isingadhuri uye inoshandiswa zvakanyanya, inopa michina yakanaka uyekugadzikana kwekupisa.Zvisinei,chisingaperi che dielectric(Dk) uyechinhu chekuparadza(Df) inogona kunge isiri iyo yakakodzera kune mashandisirwo anowanzoitwa kakawanda.
• Zvinhu zveRogersRogers inozivikanwa nezvinhu zvayo zve dielectric zvinoshanda zvakanyanya, zvakaita seRT/Duroid. Zvinhu izvi zvine dielectric constant (Dk) uye dissipation factor (Df) values ​​dzakanaka, zvichiita kuti zvikwanise kushandiswa paPCB ine frequency yakakwira.
• Zvinhu zveTaconicTaconic inopa zvinhu zvakasiyana-siyana zve dielectric zvinoshanda zvakanyanya, zvakaita sePEEK (Polyether Ether Ketone) uye polyimide, zvichipa kugadzikana kwakanaka kwekupisa uye Df values ​​yakaderera, zvichiita kuti zvive zvakakodzera kuma circuits ane frequency yakakwira.

• Zvinhu Zvinofambisa Matumbo: Kusarudzwa kwezvinhu zvinofambisa mhepo kwakakosha pakugadzira maPCB ane frequency yakakwira sezvo zvichiona kufambisa mhepo, kuramba, uye kuvimbika kwesignali yedunhu. Zvimwe zvinhu zvinofambisa mhepo zvinoshandiswa zvakanyanya mumaPCB ane frequency yakakwira zvinosanganisira:
• Mhangura: Mhangura ndiyo inonyanya kushandiswa mukufambisa mhepo nekuda kwekushanda kwayo kwakanaka uyekushanda zvakanaka kwemariZvisinei, kuramba kwayo kunowedzera nekufamba kwenguva, saka zvidimbu zvitete zvemhangura zvinogona kushandiswa mukushandiswa kwemafrequency akawanda.
• Ndarama: Ndarama inozivikanwa nekugona kwayo kupinza mhepo zvakanaka uye kusadzivirira kupisa, zvichiita kuti ikwanise kushandiswa nemaPCB ane frequency yakakwira. Inopawo zvakanakakuramba ngurauye kugara kwenguva refu. Zvisinei, goridhe rinodhura kupfuura mhangura, zvichideredza kushandiswa kwayo mu mapurogiramu anonyanya kudhura.
• Aruminiyamu: Aruminiyamu haisi sarudzo yakajairika yemaPCB ane frequency yakakwira asi inogona kushandiswa mune mamwe mashandisirwo apo huremu nemutengo ndizvo zvinonyanya kukosha. Kufambiswa kwayo kwakaderera pane mhangura negoridhe, izvo zvingada kutariswa zvakanyanya mukugadzirwa.
• Zvinhu zveDielectric: Zvinhu zveDielectric zvakakosha pakudzivirira maronda ekufambisa magetsi paPCB uye zvakakosha pakuona hunhu hwemagetsi ePCB. Zvimwe zvezvinhu zveDielectric zvinonyanya kushandiswa mumaPCB ane frequency yakakwira zvinosanganisira:
• Mhepo: Mhepo ndiyo inonyanya kushandiswa pakugadzira magetsi uye inoita kuti magetsi ashande zvakanaka pamagetsi akawanda. Zvisinei, kugadzikana kwayo pakupisa kwakanyanya, uye inogona kusakodzera kushandiswa pakupisa kwakanyanya.
• Polyimide: Polyimide chinhu chinoshandiswazvinhu zve dielectric zvinoshanda zvakanyanya inozivikanwa nekugadzikana kwayo kwakanyanya kwekupisa uye kukosha kwayo kwakaderera kweDf. Inowanzoshandiswa mumaPCB ane frequency yakakwira anoda kutsungirira tembiricha yakakwira.
• Epoxy: Zvinhu zve dielectric zvakagadzirwa ne epoxy zvinopa kugadzikana kwakanaka kwemuchina uye kupisa. Zvinowanzo shandiswa muzvinhu zveFR-4 uye zvinopa mashandiro akanaka emagetsi kusvika pahuwandu hwakati.

Kusarudzwa kwezvinhu zvekugadzira nekusanganisa PCB ine frequency yakakwira kwakakosha pakuita basa rakanaka. Zvinhu zvepakutanga, zvinhu zvinofambisa magetsi, nezvinhu zve dielectric zvese zvine basa guru mukuona hunhu hwemagetsi ePCB, kuvimbika kwemasaini, uye kuvimbika. Vagadziri vanofanirwa kusarudza zvinhu izvi zvakanyatsonaka zvichienderana nezvinodiwa zvekushandisa kuti vave nechokwadi chekuti zvinoshanda zvakanaka uye zvinoshanda zvakanaka. Sezvo tekinoroji ichiramba ichifambira mberi, zvinhu zvitsva nekuvandudzwa kwezvinhu zviripo zvicharamba zvichibuda, zvichiwedzera kugona kwemaPCB ane frequency yakakwira.