Yakakwira-Frequency PCB Dhizaini uye Gungano: Zvishandiso Zvinokosha
High-frequency yakadhindwa mapuranga ematunhu(PCBs) zvinhu zvakakosha mumhando dzakasiyana dzemashandisirwo, kusanganisira nharembozha, radar masisitimu, kutaurirana pasina waya, uye yakakwirira-kumhanyisa data kugadzirisa. Kuita kwePCB idzi kunokonzerwa zvakanyanya nezvinhu zvakasarudzwa pakugadzira kwavo uye kuungana. Ichi chinyorwa chinoongorora zvinhu zvekutanga zvinoshandiswa mu high-frequency PCB dhizaini uye kusangana, vachisimbisa maitiro avo uye zvakanakira.
- Base Materials: Iyo yekutanga zvinhu inoumba hwaro hweyakakwira-frequency PCB uye inoita basa rakakosha pakuona kwayo magetsi emagetsi. Zvimwe zvezvinhu zvinotungamira zvekutanga zvinoshandiswa mu-high-frequency PCBs zvinosanganisira:
- FR-4: Iyo ine hupfumi uye yakashandiswa zvakanyanya epoxy resin fiberglass inoumbwa, FR-4 inopa yakanaka michina uyekugadzikana kwekupisa.Zvisinei, itsdielectric constant(Dk) uyedissipation factor(Df) inogona kunge isiri yakakwana kune yakakwira-frequency application.
- Rogers Materials: Rogers inozivikanwa nepamusoro-inoshanda dielectric zvinhu, seRT/Duroid. Zvishandiso izvi zvine yakasarudzika dielectric garage (Dk) uye dissipation factor (Df) kukosha, ichiita kuti ive yakakodzera-yakanyanya-frequency PCB application.
- Taconic Zvinhu: Taconic inopa zvinhu zvakasiyana-siyana zvepamusoro-dielectric zvinhu, zvakadai sePEEK (Polyether Ether Ketone) uye polyimide, inopa kugadzikana kwekushisa kwakanyanya uye kuderera kweDf tsika, zvichiita kuti zvive zvakanyatsokodzera kumatunhu akakwirira-frequency.
- Zvishandiso Zvekudzidzisa: Kusarudzwa kwezvinhu zvinoitisa kwakakosha mune yakakwira-frequency PCB dhizaini sezvavanosarudza kutenderera kwedunhu, kuramba, uye kutendeseka kwechiratidzo. Zvimwe zvinowanzoshandiswa conductive zvinhu mu-high-frequency PCBs zvinosanganisira:
- Mhangura: Mhangura ndiyo inonyanya kushandiswa conductive zvinhu nekuda kweiyo yakasarudzika conductivity uyemutengo-kubudirira. Nekudaro, kuramba kwayo kunowedzera ne frequency, saka yakatetepa yemhangura maseru anogona kushandiswa mune yakakwira-frequency application.
- Ndarama: Goridhe inozivikanwa nekuda kwekuita kwayo kwakatanhamara uye kushomeka kushomeka, ichiita kuti ive yakakodzera kune yakakwirira-frequency PCBs. Inopawo zvakanakacorrosion resistanceuye kusimba. Zvisinei, ndarama inodhura kupfuura mhangura, ichideredza kushandiswa kwayo mukati mari-sensitive applications.
- Aluminium: Aluminium isarudzo isinganyanyi kunyanyozivikanwa kune maPCB akakwira-frequency asi inogona kushandiswa mune chaiwo maapplication apo huremu uye mutengo ndizvo zvinonyanya kunetsa. Conductivity yaro yakaderera kupfuura mhangura negoridhe, izvo zvingada kuwedzera kufunga mukugadzira.
- Dielectric Zvishandiso: Zvishandiso zveDielectric zvakakosha pakuvharisa maconductive traces paPCB uye zvakakosha pakusarudza magetsi ePCB. Mamwe epamusoro dielectric zvinhu anoshandiswa mune yakakwira-frequency PCBs anosanganisira:
- Mhepo: Mhepo ndiyo yakanyanya kuwanda dielectric zvinhu uye inopa yakanakisa mashandiro emagetsi pama frequency akakwira. Zvisinei, kugadzikana kwayo kwekushisa kunogumira, uye inogona kunge isina kukodzera kushandiswa kwepamusoro-kupisa.
- Polyimide: Polyimide is ahigh-performance dielectric zvinhuine mukurumbira nekuda kwekudzikama kwayo kwekupisa uye yakaderera Df kukosha. Inowanzo shandiswa mu-high-frequency PCBs inoda kumira kutonhora kwakanyanya.
- Epoxy: Epoxy-based dielectric zvinhu zvinopa yakanaka mechaniki uye kugadzikana kwekupisa. Ivo vanowanzo shandiswa muFR-4 base zvinhu uye vanopa kuita kwakanaka kwemagetsi kusvika kune imwe frequency.
Kusarudzwa kwezvinhu zvepamusoro-frequency PCB dhizaini uye kusangana kwakakosha kuti uwane kuita kwakaringana. Iyo base material, conductive materials, uye dielectric zvinhu zvese zvinoita basa rakakosha pakuona PCB's magetsi zvivakwa, chiratidzo chekuvimbika, uye kuvimbika. Vagadziri vanofanirwa kusarudza zvine hungwaru zvinhu izvi zvichibva pane chaiyo application zvinodiwa kuti ive nechokwadi chekuita kwakakwana uye kushanda. Sezvo tekinoroji ichienderera mberi, zvinhu zvitsva uye zvigadziriso muzvinhu zviripo zvicharamba zvichibuda, zvichiwedzera hunyanzvi hwepamusoro-frequency PCBs.