Ka ike o Frequency-kiʻekiʻe Papa Kaapuni Pai

No ka PCB kūikawā me ke alapine electromagnetic kiʻekiʻe, ma ka ʻōlelo maʻamau, hiki ke wehewehe ʻia ke alapine kiʻekiʻe e like me ke alapine ma luna o 1GHz. ʻO kāna hana kino, pololei a me nā ʻenehana ʻenehana he kiʻekiʻe loa, a hoʻohana mau ʻia i nā ʻōnaehana anti-collision automotive, nā ʻōnaehana satellite, nā ʻōnaehana radio a me nā kahua ʻē aʻe. He kiʻekiʻe ke kumukūʻai, ma kahi o 1.8 yuan no ke kenimika square, ma kahi o 18000 yuan no ka mika square.
Nā hiʻohiʻona o ka HF papa kaapuni
1. He koʻikoʻi ka mana o ka impedance, a he koʻikoʻi ka mana o ka laulā laina. ʻO ka hoʻomanawanui maʻamau ma kahi o 2%.
2. Ma muli o ka pā kūikawā, ʻaʻole kiʻekiʻe ka adhesion o ka PTH copper deposition. He mea maʻamau ia e hoʻomaʻamaʻa i nā vias a me nā ʻili me ke kōkua o nā mea lapaʻau plasma e hoʻonui i ka hoʻopili ʻana o ke keleawe PTH a me ke kūʻai aku i ka inika.
3. Ma mua o ke kuʻi ʻana, ʻaʻole hiki ke hoʻopaʻa ʻia ka pā, inā ʻaʻole e ʻilihune loa ka adhesion, a hiki ke hoʻopaʻa ʻia me ka wai etching micro.
4. Hana ʻia ka hapa nui o nā papa i nā mea polytetrafluoroethylene. He nui nā ʻaoʻao ʻōpala ke hana ʻia me nā mea ʻoki wili maʻamau, no laila pono nā mea ʻoki wili kūikawā.
5. ʻO ka papa kaapuni kiʻekiʻe he papa kaapuni kūikawā me ke alapine electromagnetic kiʻekiʻe. Ma ka ʻōlelo maʻamau, hiki ke wehewehe ʻia ke alapine kiʻekiʻe e like me ke alapine ma luna o 1GHz.

ʻO kāna hana kino, pololei a me nā ʻenehana ʻenehana he kiʻekiʻe loa, a hoʻohana mau ʻia i nā ʻōnaehana anti-collision automotive, nā ʻōnaehana satellite, nā ʻōnaehana radio a me nā kahua ʻē aʻe.

Hoʻopili kikoʻī o nā palena ʻo High-Frequency Board
ʻO ke alapine kiʻekiʻe o nā lako uila he ʻano hoʻomohala, ʻoi aku ka nui o ka ulu ʻana o nā ʻupena uila a me nā kamaʻilio satelite, ke neʻe nei nā huahana ʻike i ka wikiwiki kiʻekiʻe a me ke alapine kiʻekiʻe, a ke neʻe nei nā huahana kamaʻilio i ka standardization o ka leo, wikiō a me ka ʻikepili no ka hoʻouna uila. me ka mana nui a me ka wikiwiki wikiwiki. No laila, pono ka hanauna hou o nā huahana i ka baseboard kiʻekiʻe. Pono e hoʻohana nā huahana kamaʻilio e like me nā ʻōnaehana ukali a me ke kelepona lawe lima i nā papa kaapuni kiʻekiʻe. I nā makahiki e hiki mai ana, pono e ulu wikiwiki, a e koi nui ʻia ka baseboard kiʻekiʻe.
(1) Pono e kūlike ka heluna hoʻonui wela o ka substrate papa kaapuni kiʻekiʻe a me ka foil keleawe. Inā ʻaʻole, e hoʻokaʻawale ʻia ka pahu keleawe i ke kaʻina o nā hoʻololi anuanu a wela.
(2) Pono ka haʻahaʻa haʻahaʻa o ka haʻahaʻa haʻahaʻa o ka substrate papa kaapuni kiʻekiʻe, a ʻo ka hoʻonui ʻana i ka wai kiʻekiʻe ke kumu o ka pau ʻana o ka dielectric a me ka nalowale o ka dielectric ke hoʻopili ʻia me ka wai.
(3) Pono ka liʻiliʻi a paʻa ka dielectric mau (Dk) o ka substrate papa kaapuni kiʻekiʻe. ʻO ka ʻōlelo maʻamau, ʻoi aku ka liʻiliʻi. Hoʻohālikelike ʻia ka nui o ka hoʻouna ʻana i ka hōʻailona me ke kumu huinahā o ka dielectric mau o ka mea. He mea maʻalahi ka paʻa dielectric kiʻekiʻe e hoʻolōʻihi i ka hoʻouna ʻana i ka hōʻailona.
(4) Pono ka liʻiliʻi o ka poho dielectric (Df) o ka mea substrate papa kaapuni kiʻekiʻe, e pili ana i ka maikaʻi o ka lawe ʻana i ka hōʻailona. ʻO ka liʻiliʻi o ka poho dielectric, ʻoi aku ka liʻiliʻi o ka nalowale hōʻailona.
(5) Pono e maikaʻi nā mea ʻē aʻe o ka wela, ka pale kemika, ka ikaika o ka hopena a me ka ikaika peel o nā mea substrate papa kaapuni kiʻekiʻe. Ma ka ʻōlelo maʻamau, hiki ke wehewehe ʻia ke alapine kiʻekiʻe e like me ke alapine ma luna o 1GHz. I kēia manawa, ʻo ka substrate papa kaapuni kiʻekiʻe i hoʻohana pinepine ʻia ʻo ia ka fluorine dielectric substrate, e like me polytetrafluoroethylene (PTFE), i kapa ʻia ʻo Teflon a hoʻohana mau ʻia ma luna o 5GHz. Eia kekahi, hiki ke hoʻohana ʻia ka substrate FR-4 a i ʻole PPO no nā huahana ma waena o 1GHz a me 10GHz.

I kēia manawa, ʻo ka resin epoxy, ka resin PPO a me ka resin fluoro nā ʻano nui ʻekolu o nā mea substrate papa kaapuni kiʻekiʻe, ʻo ia ka epoxy resin ka mea liʻiliʻi loa, ʻoiai ʻo ka fluoro resin ka mea kūʻai loa; Ke noʻonoʻo nei i ka dielectric mau, ka dielectric nalowale, ka wai absorption a me nā ʻano alapine, ʻo ka fluororesin ka mea maikaʻi loa, ʻoiai ʻo ka epoxy resin ka mea ʻino loa. Ke kiʻekiʻe ka pinepine o ka noi huahana ma mua o 10GHz, hiki ke hoʻohana ʻia nā papa paʻi fluororesin wale nō. ʻIke loa, ʻoi aku ka kiʻekiʻe o ka hana o ka substrate fluororesin kiʻekiʻe ma mua o nā substrate ʻē aʻe, akā ʻo kona mau hemahema he rigidity maikaʻi ʻole a me ka nui o ka hoʻonui ʻana i ka wela me ka uku kiʻekiʻe. No ka polytetrafluoroethylene (PTFE), hoʻohana ʻia ka nui o nā mea inorganic (e like me ka silica SiO2) a i ʻole ka lole aniani e hoʻoikaika i nā mea hoʻopihapiha e hoʻomaikaʻi ai i ka hana, i mea e hoʻomaikaʻi ai i ka rigidity o ka mea kumu a hoʻemi i kona hoʻonui wela.

Eia kekahi, ma muli o ka molecular inertia o ka PTFE resin ponoʻī, ʻaʻole maʻalahi ka hui pū ʻana me ka foil keleawe, no laila pono ka hoʻomaʻamaʻa ʻili kūikawā no ka interface me ka foil keleawe. Ma ke ʻano o nā ʻano hana lapaʻau, lawe ʻia ka etching kemika a i ʻole ka plasma etching ma luna o ka polytetrafluoroethylene e hoʻonui i ka ʻili o ka ʻili a i ʻole e hoʻohui i kahi papa kiʻi ʻoniʻoni ma waena o ka copper foil a me ka polytetrafluoroethylene resin e hoʻomaikaʻi ai i ka adhesion, akā hiki ke loaʻa ka hopena i ka hana waena. Pono ka hoʻomohala ʻana o ka substrate papa kiʻekiʻe fluorine holoʻokoʻa i ka hui pū ʻana o nā mea hoʻolako maka, nā ʻāpana noiʻi, nā lako lako, nā mea hana PCB a me nā mea hana huahana kamaʻilio, I mea e hoʻomau i ka ulu wikiwiki o Papa kaapuni alapine kiʻekiʻes ma keia kahua.