Kusankhidwa kwa bolodi la PCB kuyenera kukhala koyenera pakati pa zomwe zimafunikira pakukonza ndi kupanga misa ndi mtengo. Zofunikira pakupanga zimaphatikizapo magawo amagetsi ndi makina. Vutoli ndilofunika kwambiri popanga matabwa a PCB othamanga kwambiri (mafupipafupi kuposa GHz).
Mwachitsanzo, zinthu zomwe zimagwiritsidwa ntchito nthawi zambiri za FR-4 tsopano zili ndi kutayika kwa dielectric pafupipafupi ma GHz angapo, zomwe zimakhudza kwambiri kutsitsa kwazizindikiro, ndipo mwina sizingakhale zoyenera. Ponena za magetsi, samalani ngati kutayika kwa dielectric ndi dielectric ndi koyenera kwa ma frequency opangidwa.2. Kodi mungapewe bwanji kusokoneza kwafupipafupi?
Lingaliro lofunikira popewa kusokoneza ma frequency apamwamba ndikuchepetsa kusokoneza kwa ma electromagnetic field of high-frequency signals, omwe amatchedwa crosstalk (Crosstalk). Mukhoza kuonjezera mtunda pakati pa chizindikiro chothamanga kwambiri ndi chizindikiro cha analogi, kapena kuwonjezera mawonedwe apansi / shunt pafupi ndi chizindikiro cha analogi. Komanso tcherani khutu ku kusokoneza kwa phokoso kuchokera kumalo a digito kupita kumalo a analogi.3. Momwe mungathetsere vuto la kukhulupirika kwa chizindikiro pamapangidwe apamwamba?
Kukhulupirika kwa ma Signal kwenikweni ndi vuto la kufananiza kwa impedance. Zinthu zomwe zimakhudza kufananitsa kwa impedance zimaphatikizapo kapangidwe kake ndi kutulutsa kwamphamvu kwa gwero la siginecha, mawonekedwe amtundu wa trace, mawonekedwe akumapeto kwa katundu, ndi topology ya trace. Njira yothetsera vutoli ndikudalira topology ya kuthetsa ndi kusintha kwa waya.
4. Kodi njira yolumikizira ma waya imazindikirika bwanji?
Pali mfundo ziwiri zomwe muyenera kuziganizira pakupanga kwamitundu yosiyanasiyana. Chimodzi ndichoti kutalika kwa mawaya awiriwa kuyenera kukhala kwautali momwe kungathekere, ndipo winayo ndikuti mtunda pakati pa mawaya awiriwo (mtunda uwu umatsimikiziridwa ndi kusokoneza kosiyana) uyenera kukhala wokhazikika, ndiko kuti, kuti ukhale wofanana. Pali njira ziwiri zofananira, imodzi ndi yakuti mizere iwiriyo imayendera mbali imodzi, ndipo ina ndi yakuti mizere iwiriyo imayendera zigawo ziwiri zoyandikana (kupitirira-pansi). Kaŵirikaŵiri, zoyamba za mbali ndi mbali (mbali ndi mbali, mbali ndi mbali) zimagwiritsiridwa ntchito m’njira zambiri.
5. Kodi mungazindikire bwanji mawaya amtundu wa wotchi yokhala ndi cholumikizira chimodzi chokha?
Kuti mugwiritse ntchito mawaya osiyanitsa, ndizomveka kuti gwero lazizindikiro ndi wolandila ndizizindikiro zosiyana. Chifukwa chake, ndizosatheka kugwiritsa ntchito waya wosiyana pa chizindikiro cha wotchi yokhala ndi terminal imodzi yokha yotulutsa.
6. Kodi chopinga chofananira chikhoza kuwonjezeredwa pakati pa mizere yosiyanitsa pa mapeto olandira?
Kukaniza kofananira pakati pa awiriawiri a mzere wosiyana pamapeto olandila nthawi zambiri kumawonjezedwa, ndipo mtengo wake uyenera kukhala wofanana ndi mtengo wa impedance yosiyana. Mwanjira iyi mtundu wa chizindikiro udzakhala wabwinoko.
7. Chifukwa chiyani mawaya a mawaya osiyanitsa ayenera kukhala oyandikana komanso ofanana?
Mawaya amitundu yosiyanasiyana ayenera kukhala oyandikana moyenerera komanso ofanana. Zomwe zimatchedwa kuyandikira koyenera ndi chifukwa mtunda udzakhudza mtengo wa impedance yosiyana, yomwe ndi gawo lofunika kwambiri popanga awiriawiri osiyana. Kufunika kwa parallelism ndikusunganso kusasinthika kwa impedance yosiyana. Ngati mizere iwiriyo ili pafupi ndi kutali, kusokoneza kosiyana kudzakhala kosagwirizana, zomwe zidzakhudza kukhulupirika kwa chizindikiro ndi kuchedwa kwa nthawi.