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Iintlobo zeemveliso
iveliso ezifakiwe
01
Iibhodi zeSekethe eziprintiweyo eziPhezulu
Iibhodi zeSekethe eziprintiweyo eziPhezulu
Iibhodi zeSekethe eziprintiweyo eziPhezulu
Iibhodi zeSekethe eziprintiweyo eziPhezulu
Iibhodi zeSekethe eziprintiweyo eziPhezulu
Iibhodi zeSekethe eziprintiweyo eziPhezulu

Iibhodi zeSekethe eziprintiweyo eziPhezulu

Ibhodi ye-PCB ephezulu ibhekisa kuhlobo olukhethekileyo lwebhodi yesekethe enefrikhwensi ye-electromagnetic ephezulu, esetyenziswa kwimimandla yefrikhwensi ephezulu (i-frequency enkulu kuno-300MHz okanye ubude be-wavelength ngaphantsi kwe-1 mitha) kunye ne-microwave (i-frequency enkulu kune-3GHz okanye ubude be-waveleng ngaphantsi kwe-0.1 yeemitha) . Yibhodi yesekethe eveliswe kwi-microwave substrate copper clad board isebenzisa ezinye iinkqubo zokwenza ibhodi yesekethe eqinileyo okanye iindlela ezikhethekileyo zokulungisa.

    Qhagamshelana nathi
    iinkcukacha zemveliso

    Zeziphi izinto ezisetyenziselwa ukwenza iibhodi zePCB ezijikelezayo?

    Ukusebenza kweebhodi ze-high-frequency kwi-wireless okanye ezinye iindawo eziphezulu ze-frequency zixhomekeke kwizinto zokwakha. Kwizicelo ezininzi, ukusetyenziswa kwe-laminated FR4 izinto kunokuphucula iimpawu ze-dielectric.

    Inqanaba le-DF lezinto eziqhelekileyo limisela ngokuthe ngqo ukusebenza kweePCBs:

    I-DK (i-dielectric constant of DK material, ebonisa ukukwazi kwayo ukugcina iintlawulo) kufuneka ibe yincinci kwaye izinzile ngokwaneleyo, ngokuqhelekileyo ibe yincinci kangangoko kunokwenzeka, njengoko i-DK ephezulu inokubangela ukulibaziseka kokudluliselwa komqondiso.

    I-DF (i-DF i-angle yokulahlekelwa kwezinto, kwaye xa izibonakaliso zihanjiswa kwizinto eziphathekayo, azihambisani ngokupheleleyo phambili kwindlela yomqondiso, kwaye ezinye zazo zigeleza kwizinto eziphathekayo zibe ngabaqhubi abasondeleyo.) ikakhulu ichaphazela umgangatho wokuhanjiswa komqondiso. I-DF encinci inokunciphisa ngokuhambelanayo ukulahleka komqondiso.

    I-coefficient yokwandiswa kwe-thermal kufuneka ifane ne-foil yobhedu kangangoko kunokwenzeka, njengoko umehluko unokubangela ukuba i-foil yobhedu ihlukane ngexesha lokutshintsha okubandayo kunye nokushisa.

    Kwiindawo ezifumileyo, ukufunxwa kwamanzi kufuneka kube phantsi, ngelixa ukufunxa okuphezulu kwamanzi kunokuchaphazela i-DK kunye ne-DF.

    Ukuxhathisa ubushushu, ukumelana neekhemikhali, ukuxhathisa impembelelo, kunye nokuxhathisa amaxolo kufuneka kube kuhle. I-coefficient yokwandisa i-thermal yeebhodi zeesekethe eziphezulu kufuneka zifanane ne-copper foil kangangoko kunokwenzeka, njengoko iibhodi zeesekethe eziphezulu zingabangela ukuhlukana kwe-foil yobhedu phantsi kweemeko ezibandayo kunye nezishushu. Ukuqinisekisa ukusebenza okugqibeleleyo kweebhodi zeesekethe eziphezulu, kuyimfuneko ukuba ifane ne-foil yobhedu kangangoko kunokwenzeka. Ii-PCB ezihamba rhoqo zineempawu zokuxhathisa ubushushu, ukuxhathisa ukubola kweekhemikhali, ukuxhathisa impembelelo, kunye nokuxhathisa okulungileyo kwe-peel.

    Zeziphi iingenelo zeebhodi zePCB ezixhaphakileyo ezidumileyo?

    Ukusebenza okuphezulu

    Ngokuqhelekileyo, ilahleko yokusetyenziswa kweebhodi zeesekethe eziphezulu ze-high-frequency zibangelwa yi-dielectric constant constant, evela ekusebenzeni kwezinto abazisebenzisayo, ngoko ukusetyenziswa kwazo kuncinci ngokwendalo kunezinye iibhodi zeesekethe. Ngaphantsi kwezo meko zibalaseleyo zokuzalwa, itekhnoloji yokufudumeza i-induction kwindawo ephambili yophuhliso lwetekhnoloji inokuhlangabezana nemfuno yokufudumeza okujoliswe kuko, okwenza ukusebenza kakuhle kweebhodi zesekethe eziphezulu kakhulu. Kakade ke, ngoxa kuzanywa ukusebenza kakuhle, ukukhuselwa kwendalo akunakuyekwa.

    Isantya sokuSebenza ngokukhawuleza

    Njengoko kuyaziwa, isantya sothumelo sihambelana ngokuthe ngqo kwi-dielectric constant. Ngokubhekiselele kwimigaqo yombane, isantya sokuhambisa sihambelana ngokungafaniyo nengcambu yesikwere se-dielectric constant, oko kukuthi, i-dielectric constant, isantya sokuhambisa ngokukhawuleza; Incinci i-dielectric constant, ngokukhawuleza isantya sothumelo. Esi sesinye sezizathu zokuba iibhodi eziphakamileyo ze-PCB zithandwa phakathi kwabantu. Isebenzisa izinto ezikhethekileyo zokuqinisekisa iimpawu ze-dielectric encinci, ngelixa likwaqinisekisa isantya sokuhanjiswa kunye nokusebenza okuzinzile kwebhodi yesekethe.

    Ukuguquguquka

    Isetyenziswa ngokubanzi kwiibhodi zeesekethe eziphezulu-frequency kumashishini ahlukeneyo afuna ukufudumeza unyango lwezixhobo zetsimbi ezichanekileyo. Kwintsimi yayo yezobugcisa, ayikwazi ukufezekisa kuphela ukufudumeza kwamacandelo kwiindawo ezinzulu ezihlukeneyo, kodwa kugxininise ukufudumala kwiimpawu zendawo. Ingaba ingaphezulu okanye ubunzulu, iindlela zokufudumeza ezisembindini okanye ezisasaziweyo zinokugqitywa ngokulula.

    Ukunyamezela okunamandla kunye nokukwazi ukuchasana nokuphazamiseka

    Imo engqongileyo ichaphazela ukubunjwa kwe-medium, ngoko ke iibhodi zeesekethe eziphezulu ze-high-frequency zisenazo iimfuno zokusingqongileyo, ngakumbi emazantsi apho imozulu ifumile kakhulu. Iibhodi zesekethe eziphakamileyo ziyakwazi ukuziqhelanisa kakuhle neemeko ezinjalo. Iibhodi zesekethe eziphakamileyo ezenziwe ngemathiriyeli ezinokufunxa amanzi aphantsi kakhulu zinokucela umngeni kwiindawo ezinjalo. Ngelo xesha, kungcono ukwenza ibhodi yesekethe ye-PCB ibe nenzuzo yokumelana nokubola kweekhemikhali, ukwenzela ukuba ikwazi ukumelana nomswakama kunye nobushushu obuphezulu kwiindawo ezinomswakama, kwaye ibe namandla amakhulu e-peel.