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Imikhiqizo Izigaba
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    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme
    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme
    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme
    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme
    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme
    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme

    Amabhodi Esekethe Aphrintiwe Imvamisa Ephakeme

    Ibhodi le-PCB eliyifrikhwensi ephezulu libhekisela ohlotsheni olukhethekile lwebhodi lesifunda elinefrikhwensi ye-electromagnetic, esetshenziswa emkhakheni wefrikhwensi ephezulu (imvamisa enkulu kuno-300MHz noma ubude begagasi obungaphansi kwemitha elingu-1) kanye ne-microwave (imvamisa enkulu kune-3GHz noma ubude begagasi obungaphansi kwamamitha angu-0.1). Kuyibhodi lesifunda elikhiqizwe ebhodini le-microwave substrate yethusi lisebenzisa izinqubo ezithile zokukhiqiza ibhodi lesifunda eliqinile noma izindlela ezikhethekile zokucubungula.

      Xhumana nathi
      imininingwane yomkhiqizo

      Yiziphi izinto ezisetshenziselwa ukwenza amabhodi e-PCB anemvamisa ephezulu?

      Ukusebenza kwamabhodi e-high-frequency ku-wireless noma kwezinye izindawo ezine-high-frequency kuncike ezintweni zokwakha. Ngezinhlelo eziningi zokusebenza, ukusetshenziswa kwezinto ze-FR4 laminated kungathuthukisa izakhiwo ze-dielectric.

      Izinga le-DF lezinto ezijwayelekile linquma ngokuqondile ukusebenza kwama-PCB:

      I-DK (i-dielectric constant yento ye-DK, ebonisa amandla ayo okugcina amashaji) kufanele ibe yincane futhi izinze ngokwanele, ngokuvamile ibencane ngangokunokwenzeka, njengoba i-DK ephezulu ingase ibangele ukubambezeleka kokudlulisela isignali.

      I-DF (i-DF i-engeli yokulahlekelwa kwezinto, futhi lapho amasignali edluliswa endabeni, awasabalalisi ngokuphelele phambili endleleni yesignali, futhi amanye awo ageleza ngento eya kuma-conductor aseduze.) Kufanele abe mancane kakhulu, okuthinta kakhulu izinga lokudluliswa kwesignali. I-DF encane ngokufanayo inganciphisa ukulahleka kwesignali.

      I-coefficient yokwandisa okushisayo kufanele ifane ne-foil yethusi ngangokunokwenzeka, njengoba umehluko ungabangela ukuba i-foil yethusi ihlukane phakathi nezinguquko ezibandayo nezishisayo.

      Ezindaweni ezinomswakama, ukumuncwa kwamanzi kufanele kube kuncane, kuyilapho ukumuncwa kwamanzi okuphezulu kungathinta i-DK ne-DF.

      Ukumelana nokushisa, ukumelana namakhemikhali, ukumelana nomthelela, nokumelana nama-peel kumele kube kuhle. I-coefficient yokunweba okushisayo yamabhodi esekethe enziwe ngamaza aphezulu idinga ukuba ifane ne-copper foil ngangokunokwenzeka, njengoba amabhodi esekethe e-high-frequency angabangela ukuhlukaniswa kwe-foil yethusi ngaphansi kwezimo ezibandayo nezishisayo ezishintshayo. Ukuqinisekisa ukusebenza okuphelele kwamabhodi wesifunda se-high-frequency, kuyadingeka ukuthi kufane ne-foil yethusi ngangokunokwenzeka. Ama-PCB emvamisa ephezulu anezici zokumelana nokushisa, ukumelana nokugqwala kwamakhemikhali, ukumelana nomthelela, nokumelana okuhle namapeel.

      Yiziphi izinzuzo zokuthi amabhodi e-PCB adume kakhulu?

      Ukusebenza Okuphezulu

      Ngokuvamile, ukulahlekelwa kokusetshenziswa kwamabhodi esekethe e-high-frequency kubangelwa ukungaguquguquki kwawo okuncane kwe-dielectric, okuvela ekusebenzeni kwezinto ezisetshenziswayo, ngakho ukusetshenziswa kwawo kuncane ngokwemvelo kunamanye amabhodi wesekethe. Ngaphansi kwezimo ezinhle kakhulu zokuzalwa ezinjalo, ubuchwepheshe bokushisa lokungeniswa phambili ekuthuthukisweni kobuchwepheshe bungahlangabezana nesidingo sokushisisa okuqondiwe, okwenza ukusebenza kahle kwamabhodi esekethe e-high-frequency kube phezulu kakhulu. Yiqiniso, ngenkathi siphishekela ukusebenza kahle, ukuvikelwa kwemvelo akunakuyekwa.

      Isivinini sokusebenza esisheshayo

      Njengoba kwaziwa, isivinini sokudlulisa silingana ngqo ne-dielectric constant. Ngokwezimiso zikagesi, isivinini sokudlulisa siphambene ngokuphambene nempande yesikwele ye-dielectric constant, okungukuthi, i-dielectric constant, ijubane lokudlulisela lihamba kancane; I-dielectric constant encane, isivinini sokudlulisa siyashesha. Lesi futhi ngesinye sezizathu zokuthi kungani amabhodi e-PCB aphezulu adumile phakathi kwabantu. Isebenzisa izinto ezikhethekile ukuze kuqinisekiswe izici ze-dielectric encane engaguquki, kuyilapho futhi iqinisekisa isivinini sokudlulisela kanye nokusebenza okuzinzile kwebhodi lesifunda.

      Ukuzivumelanisa nezimo

      Isetshenziswa kabanzi kumabhodi wesekethe we-high-frequency ezimbonini ezahlukahlukene ezidinga ukwelashwa kokushisisa kwezinto zensimbi ezinembayo. Emkhakheni wayo wezobuchwepheshe, ayikwazi nje ukufeza ukushisa kwezingxenye ekujuleni okuhlukene, kodwa futhi igxile ekushiseni kuzici zendawo. Kungakhathaliseki ukuthi kungaphezulu noma ukujula, izindlela zokushisa ezimaphakathi noma ezihlakazekile zingaqedwa kalula.

      Ukubekezelelana okuqinile nekhono lokulwa nokuphazamiseka

      Imvelo ithinta ukwakheka kwe-medium, ngakho-ke amabhodi esekethe e-high-frequency asenezidingo ezithile zemvelo, ikakhulukazi eningizimu lapho isimo sezulu sinomswakama kakhulu. Amabhodi esekethe aphezulu angakwazi ukuzivumelanisa kahle nezimo ezinjalo. Amabhodi esekethe aphezulu enziwe ngezinto ezimunca amanzi aphansi kakhulu angabekela inselele izindawo ezinjalo. Ngesikhathi esifanayo, kungcono ukwenza ibhodi lesifunda le-PCB libe nenzuzo yokumelana nokugqwala kwamakhemikhali, ukuze likwazi ukumelana nomswakama kanye nokushisa okuphezulu ezindaweni ezinomswakama, futhi libe namandla amakhulu e-peel.