Mukugadzirwa kwe Pcb bhodhi, pamwe nekukurumidza kuwedzera kwehuwandu, pachave nekukanganisa kwakawanda kwakasiyana nekugadzirwa kwepasi-frequency PCB bhodhi. Iko kunowanzo kuve nezvinhu zvina zvekupindira, zvinosanganisira ruzha rwemagetsi, kutapurirana kwetambo kupindirana, kubatanidza uye kukanganisa kwemagetsi emagetsi (EMI).

Maitiro ekugadzirisa kukanganisa kweiyo yepamusoro-frequency PCB dhizaini

Kune nzira dzinoverengeka dzekubvisa ruzha rwemagetsi muPBB dhizaini

1. Teerera kuburi repaburi pabhodhi: iro gomba rinoita kuti dura remagetsi riwane mukana wekusiya nzvimbo yekusiya gomba kuburikidza. Kana kuvhurwa kwesimba rekugovera magetsi kwakanyanyisa kukura, inosungirwa kukanganisa chiuno chechiratidzo, chiratidzo chinomanikidzwa kupfuura, nzvimbo yekurembera inowedzera, uye ruzha rwunowedzera. Panguva imwecheteyo, kana mitsara yemasaini yakasunganidzwa padyo nekuvhura uye ichigovana chiuno chimwe chete, iyo impedance yakajairika inokonzeresa crosstalk. Ona Mufananidzo 2.

Nzira yekugadzirisa kupindirana kwepamusoro-frequency PCB dhizaini?

2. Tambo yekubatanidza inoda ivhu rakaringana: chiratidzo chega chega chinoda kuve neicho chakazvimiririra chiratidzo, uye nzvimbo yekutenderera yechiratidzo uye chiuno chidiki sezvinobvira, ndiko kuti, chiratidzo uye chiuno chinofanira kunge chakaenzana.

3. analogu nedhijitari magetsi ekuti apatsanure: madhivhaji epamusoro-kazhinji kazhinji anonzwika zvakanyanya kudhijitari, saka iwo maviri anofanira kupatsanurwa, akabatana pamwechete pamusuwo wesimba remagetsi, kana chiratidzo chakanangana neanalogog nedhijitari zvikamu mazwi, iwe unogona kuisa chiuno pamusoro pechiratidzo kuti udzikise nzvimbo yechiuno. Iyo yedhijitari-analogi span yakashandiswa kune iyo chiratidzo chiuno.

Maitiro ekugadzirisa kukanganisa kweiyo yepamusoro-frequency PCB dhizaini

4. Dzivisa kupindirana kwemagetsi akapatsanurwa pakati pezvikamu zvakasiyana: zvikasadaro, ruzha redunhu runogona kupfuura nepasina capacitive coupling.

5. kupatsanurwa kwezvinhu zvinonzwisisika: senge PLL.

6. Isa tambo yemagetsi: Kuti udzikise tambo yechiratidzo, isa tambo yemagetsi pamucheto kwetambo yechiratidzo kuti udzikise ruzha.

Nzira yekugadzirisa kupindirana kwepamusoro-frequency PCB dhizaini?

Ii. Nzira dzekubvisa kutapurirana kwetambo kupindirwa muPCB dhizaini zvinotevera:

(a) Dzivisa impedance discontinuity yekufambisa mutsara. Iyo poindi yekumisikidza impedance ndiyo poindi yekufambisa mutsara shanduko, senge yakatwasuka kona, kuburikidza neburi, nezvimwe, inofanirwa kudzivirirwa kusvika pazvinogoneka. Maitiro: Kudzivirira makona akatwasuka emutsara, kusvika pazvinogona kuenda 45 ° Angle kana arc, hombe Angle inogona zvakare kuve; Shandisa sevashoma kuburikidza nemakomba sezvinobvira, nekuti imwe neimwe kuburikidza negomba ndeye impedance discontinuity. Zviratidzo kubva padenga rekunze zvinodzivirira kupfuura nepakati pemukati uye zvinopesana.

Maitiro ekugadzirisa kukanganiswa kweiyo yepamusoro-frequency pcb dhizaini

(b) Usashandise mitsara yedanda. Nekuti chero mutsetse wedutu ndiwo manyuko eruzha. Kana mutsetse wedutu wakapfupika, unogona kusunganidzwa panoperera tambo yekufambisa; Kana mutsetse wedutu wakareba, zvinotora main tambo yekufambisa sosi uye kuburitsa kuratidzwa kukuru, kunozoomesesa dambudziko. Inokurudzirwa kuti usashandise.

3. Kune nzira dzakawanda dzekubvisa crosstalk muPCB dhizaini

1. Hukuru hwemhando mbiri dzecrosstalk inowedzera pamwe nekuwedzera kwemutoro impedance, saka tambo yemasaini inoenderana nekukanganiswa kunokonzerwa necrosstalk inofanirwa kumiswa nenzira kwayo.

2, kusvika pazvinokwanisika kuwedzera chinhambwe pakati pemitsara yemasaini, inogona kudzikisira capacitive crosstalk. Ground manejimendi, kupatsanurana pakati pewiring (senge inoshandira mitsara yemasaini uye mitsara yepasi yekuzviparadzanisa, kunyanya mudanho rekusvetuka pakati peyechiratidzo mutsetse nepasi kusvika padanho) uye kudzora kutungamira inductance.

3. Capacitive crosstalk inogona zvakare kudzikiswa nekuisa waya yepasi pakati pemitsara yemiraini iri padhuze, iyo inofanirwa kuve yakabatana nekuumbwa kwese kwere wavelength.

4. Kune crosstalk inonzwisisika, nzvimbo yekutenderera inofanirwa kudzikiswa uye, kana ichibvumidzwa, chiuno chakabviswa.

5. Dzivisa chiratidzo chinogovana chiuno.

6, teerera kutendeseka kwechiratidzo: iyo dhizaini inofanirwa kuona iko kwekupedzisira kubatana mukugadzirisa nzira yekugadzirisa kutendeka kwechiratidzo. Vagadziri vanoshandisa nzira iyi vanogona kutarisisa paiyo microstrip kureba kweye inodzivirira mhangura foil kuitira kuti vawane kuita kwakanaka kwekutendeka kwechiratidzo. Kune masisitimu ane akabatana akabatana muchimiro chekutaurirana, dhizaini anogona kushandisa PCB seyakaguma.

4. Kune nzira dzinoverengeka dzekubvisa kukanganiswa kwemagetsi emagetsi muPCB dhizaini

1. Deredza zvishwe: Chiuno chega chega chakaenzana neiyo kanyanga, saka tinofanirwa kudzikisa huwandu hwezvishongo, nzvimbo yezvishongo uye mhedzisiro yehutachiona hwezvishongo. Ita shuwa kuti chiratidzo chine nzira imwechete yekurembera pane chero maviri mapoinzi, dzivirira zvishwe zvekugadzira uye shandisa iyo sosi yemagetsi pazvinogoneka.

2, kusefa: mune tambo yemagetsi uye mumutsara wechiratidzo kunogona kutora kusefa kudzora EMI, pane nzira nhatu: decoupling capacitor, EMI firita, magineti zvikamu. EMI firita inoratidzwa mukati.

Maitiro ekugadzirisa kukanganiswa kweiyo yepamusoro-frequency pcb dhizaini

3, ichidzivirira. Nekuda kwehurefu hwenyaya iyi pamwe nekuwanda kwenhaurirano inodzivirira zvinyorwa, hapasisina sumo chaiyo.

4, edza kudzora kumhanya kwepamusoro frequency zvigadzirwa.

5, wedzera dielectric inogara iripo pcb board, inogona kudzivirira yakakwira frequency zvikamu senge tambo yekufambisa padyo nebhodhi kubva kubuda kunze; Kuwedzera ukobvu pcb bhodhi, kurerutsa pakukora microstrip mutsetse, anogona kudzivirira remagetsi mutsetse spillover, kunogonawo kudzivirira nemwaranzi.