RF ndi microwave PCB akhala kwa zaka zingapo ndipo amagwiritsidwa ntchito kwambiri pamakampani azamagetsi. Ndiwotchuka kwambiri ndipo adapangidwa kuti azigwiritsa ntchito zikwangwani mu MHZ kupita ku gigahertz pafupipafupi. Ma PCBS awa ndiabwino pankhani yogwiritsa ntchito intaneti komanso kulumikizana. Pali zifukwa zambiri zomwe opanga ma PCB amalangizira ma RF ndi ma microwave board kuti azitha kugwiritsa ntchito intaneti. Kodi mukufuna kudziwa zomwe ali? Nkhaniyi ikufotokoza nkhani yomweyo.

Chidule cha RF ndi microwave PCB

Nthawi zambiri, ma RF ndi ma microwave board adapangidwa kuti azigwiritsa ntchito pakati – mpaka pafupipafupi kapena kupitilira 100 MHz. Matabwawa ndi ovuta kupanga chifukwa cha zovuta za kasamalidwe kuyambira pakumvera kwa chizindikiritso ndikuwongolera mawonekedwe osunthira. Komabe, mavutowa samachepetsa kufunikira kwake. Kugwiritsa ntchito zida zokhala ndi zinthu monga kutsika kwa ma dielectric wokhazikika, koyefishienti yayikulu yowonjezera kutentha (CTE) ndi kuchepa kwa Angle tangent kumathandizira kusintha ntchito yomanga. Zipangizo za PCB zomwe zimagwiritsidwa ntchito popanga RF ndi ma microwave PCB ndi ma crocarboni odzaza ndi ceramic, PTFE yokhala ndi ulusi woluka kapena wa microglass, FEP, LCP, Rogers RO laminates, magwiridwe antchito FR-4, etc.

Ubwino wosiyanasiyana wa RF ndi ma microwave PCBS

Rf ndi microwave PCBS zimapereka maubwino ambiri opindulitsa. Chifukwa chake tiyeni tiwone onsewo.

Zipangizo zotsika ndi CTE zimathandizira ma PCB kukhala okhazikika pama kutentha kwambiri. Kuphatikiza apo, zinthuzi zimapangitsa kuti ma multilayers azigwirizana mosavuta.

Chifukwa chogwiritsa ntchito zida zotsika za CTE, mainjiniya a PCB amatha kulumikiza magawo angapo amipanda kuti ikhale yovuta.

Mtengo wa msonkhano wa RF ndi microwave PCBS ukhoza kuchepetsedwa kudzera pamakina osanjikiza angapo. Kapangidwe kameneka kumathandizanso pakuchita bwino kwa PCB.

Khola la Er ndi low low tangent limathandizira kufalitsa mwachangu kwa ma frequency frequency ma sign kudzera ma PCBS. Kuphatikiza apo, impedance ndiyotsika panthawiyi.

Akatswiri opanga ma PCB amatha kuyika bwino pabolodi, zomwe zimathandiza kukwaniritsa mapangidwe ovuta.

Chifukwa chake, maubwino awa amapangitsa RF ndi microwave PCBS kukhala yoyenera pamachitidwe osiyanasiyana kuphatikiza kutumizirana opanda zingwe ndi makina ena ochezera makompyuta.