Kazhinji, zvinhu zvinokanganisa hunhu hwePCB ndeidzi: dielectric ukobvu H, mhangura ukobvu T, trace wide W, trace spacing, dielectric inogara Er yezvinhu zvakasarudzirwa stack, uye ukobvu hwemasolder mask.

Kazhinji, iyo yakakura iyo dielectric ukobvu uye mutsara mutsara, iyo yakakura iyo impedance kukosha; iyo yakakura iyo dielectric inogara, ukobvu hwemhangura, upamhi hwemutsara, uye solder mask ukobvu, idiki iyo impedance kukosha.

Yekutanga: yepakati ukobvu, kuwedzera iyo yepakati ukobvu kunogona kuwedzera iyo impedance, uye kuderera kwepakati ukobvu kunogona kuderedza iyo impedance; akasiyana prepregs ane akasiyana guruu zviri mukati uye ukobvu. Ukobvu mushure mekudzvanya hunoenderana nekupfava kwemuchina uye maitiro eiyo ndiro yekutsikirira; kune chero mhando yeplate inoshandiswa, inofanirwa kuwana ukobvu hwe media media inogona kugadzirwa, iyo inobatsira kugadzira kukarukureta, uye engineering dhizaini, kudzvanya dhizaini kudzora, inopinda Tolerance ndiyo kiyi yekutonga midhiya ukobvu.

Yechipiri: upamhi hwemutsara, kuwedzera upamhi hwemutsara kunogona kuderedza iyo impedance, kuderedza upamhi hwemutsara kunogona kuwedzera iyo impedance. Kudzora kwehupamhi hwemutsara kunoda kuve mukati mekushivirira kwe +/- 10% kuti uwane iyo impedance control. Iyo gap yemutsara wechiratidzo inokanganisa iyo yese test waveform. Yayo imwechete-poindi impedance yakakwira, ichiita iyo waveform yese isina kuenzana, uye iyo impedance mutsara haibvumidzwe kuita Line, gaka haringapfuuri 10%. Mutsara wakafara unonyanya kudzorwa ne etching control. Kuti ive nechokwadi chehupamhi hwemutsara, zvinoenderana neiyo etching side etching huwandu, iyo mwenje yekudhirowa kukanganisa, uye pateni yekukanganisa kukanganisa, iyo firimu firimu inobhadharwa kuti iyo nzira isangane nehupamhi hwemutsara chinodiwa.

Yechitatu: ukobvu hwemhangura, kuderedza mutsetse ukobvu kunogona kuwedzera iyo impedance, kuwedzera mutsetse ukobvu kunogona kuderedza impedance; iyo mutsara ukobvu hunogona kudzorwa nepateni plating kana kusarudza hunoenderana ukobvu hwehwaro zvinhu zvemhangura foil. Kudzora kwemhangura yemhangura kunodiwa kuti ive yunifomu. Iyo shunt block inowedzerwa kubhodhi rewaya dzakatetepa uye waya dzakapatsanurwa kudzikamisa ikozvino kudzivirira kusaenzana kwemhangura ukobvu pawaya uye kukanganisa zvakanyanya kusaenzana kugoverwa kwemhangura pane cs uye ss nzvimbo. Zvakakosha kuyambuka bhodhi kuti uwane chinangwa cheyunifomu yemhangura yemhangura kumativi ose maviri.

Yechina: dielectric nguva dzose, kuwedzera dielectric nguva dzose inogona kuderedza impedance, kuderedza dielectric nguva dzose kunogona kuwedzera impedance, iyo dielectric nguva dzose inonyanya kudzorwa nezvinhu. Iyo dielectric inogara yemapuleti akasiyana akasiyana, ayo ane hukama neiyo resin zvinhu zvinoshandiswa: iyo dielectric nguva yeFR4 plate ndeye 3.9-4.5, iyo inoderera nekuwedzera kweiyo frequency yekushandiswa, uye dielectric yePTFE plate ndeye 2.2. - Kuti uwane yakakwira chiratidzo chekufambisa pakati pe3.9 inoda yakakwira impedance kukosha, iyo inoda yakaderera dielectric nguva dzose.

Yechishanu: ukobvu hwemasolder mask. Kudhinda mask solder kunoderedza kushorwa kweiyo yekunze layer. Mumamiriro ezvinhu akajairwa, kudhinda mask solder imwe chete kunogona kuderedza kudonhedza-inogumira ne2 ohms, uye kunogona kuita kuti musiyano udonhe ne8 ohms. Kudhinda kaviri kukosha kwekudonha kwakapetwa kaviri kune imwe pass. Kana uchidhinda kanopfuura katatu, iyo impedance kukosha haizochinji.