Ke hana i kaʻAla PCB, ma muli o ka hana loiloi mua ʻaʻole i hana ʻia a ʻaʻole i hana ʻia, paʻakikī ka hana hope.Inā hoʻohālikelike ʻia ka papa PCB me ko mākou kūlanakauhale, ua like nā ʻāpana i ka lālani ma luna o ka lālani o nā hale like ʻole, nā laina hōʻailona nā alanui a me nā ala i loko o ke kūlanakauhale, flyover a puni ka mokupuni, ʻo ka puka ʻana o kēlā me kēia alanui kona hoʻolālā kikoʻī, ʻo ka wili pū kekahi. ka mea like.
1. ʻO nā koi mua o ka uwea
A) Manaʻo ʻia nā laina hōʻailona kī: ka lako mana, ka hōʻailona liʻiliʻi analog, ka hōʻailona kiʻekiʻe, ka hōʻailona uaki, ka hōʻailona synchronization a me nā hōʻailona kī ʻē aʻe.
B) ʻO ka manaʻo kumu nui o ka uwila: E hoʻomaka i ka uwea ʻana mai ka ʻāpana me ka pilina pili paʻakikī loa ma ka papa.Hoʻomaka ka hoʻopili ʻana mai ka wahi i hoʻopili ʻia ma ka papa.
C) Hoʻomalu no ka hana hōʻailona kī: e ho'āʻo e hāʻawi i ka papa uwea kūikawā no nā hōʻailona kī e like me ka hōʻailona uaki, ka hōʻailona kiʻekiʻe a me ka hōʻailona maʻalahi, a e hōʻoia i ka palena liʻiliʻi o ka loop.Inā pono, e hoʻopaʻa ʻia ka pale a me ka hoʻonui ʻana i ka spacing palekana.E hōʻoia i ka maikaʻi o ka hōʻailona.
D) E hoʻonohonoho ʻia ka pūnaewele me nā koi hoʻomalu impedance ma ka papa hoʻomalu impedance, a e pale ʻia kāna hōʻailona cross-division.
2.ʻO ka mana scrambler uwea
A) Ka wehewehe ʻana i ke kumu 3W
ʻO ka mamao ma waena o nā laina he 3 manawa o ka laulā laina.I mea e hōʻemi ai i ke kamaʻilio ʻana ma waena o nā laina, pono e lawa ka nui o ka laina laina.Inā ʻaʻole i emi iho ka mamao waena waena ma mua o 3 manawa o ka laulā laina, hiki ke mālama ʻia ka 70% o ke kahua uila ma waena o nā laina me ka ʻole o ke keakea ʻana, i kapa ʻia ʻo ka lula 3W.
B) Ka hoʻomalu ʻana: CrossTalk e pili ana i ka hoʻopili like ʻana ma waena o nā pūnaewele like ʻole ma ka PCB i hoʻokumu ʻia e nā wili lōʻihi lōʻihi, ma muli o ka hana o ka puʻupuʻu puʻupuʻu a me ka inductance ma waena o nā laina like.ʻO nā hana nui e lanakila ai i ka crosstalk:
I. E hoonui i ke kaawale o ka wili like a hahai i ka rula 3W;
Ii.E hoʻokomo i nā kaula hoʻokaʻawale ʻāina ma waena o nā uwea like
Iii.E ho'ēmi i ka mamao ma waena o ka papa cabling a me ka papa honua.
3. Nā lula maʻamau no nā pono uea
A) He orthogonal ke kuhikuhi o ka mokulele pili.E hōʻalo i nā laina hōʻailona like ʻole i ka papa pili i ka ʻaoʻao like e hōʻemi i ka hoʻopili ʻana i waena o ka papa hana pono ʻole;Inā paʻakikī kēia kūlana ma muli o nā palena o ke kūkulu ʻana i ka papa (e like me kekahi mau mokulele hope), ʻoi aku ka nui o ka nui o ka hōʻailona, pono ʻoe e noʻonoʻo e hoʻokaʻawale i nā papa uea ma ka mokulele honua a me nā uwea hōʻailona ma ka honua.
B) Pono ke wiliwili o nā mea ʻokoʻa liʻiliʻi e like me ke ʻano like, a pono e hoʻopili ʻia ke alakaʻi SMT me kahi mamao kokoke loa mai waho o ka papa.ʻAʻole ʻae ʻia ka hoʻopili pololei ma waena o ka pad.
C) Li'ili'i loa ka lula loop li'ili'i, 'o ia ho'i ka li'ili'i o ka loop loop i hana 'ia e ka laina hoailona.ʻOi aku ka liʻiliʻi o ka ʻāpana o ka loop, ʻoi aku ka liʻiliʻi o ka radiation waho a me ka liʻiliʻi o ke keakea waho.
D) ʻAʻole ʻae ʻia nā kaula STUB
E) E mālama like ka laulā uwea o ka pūnaewele like.ʻO ka hoʻololi ʻana o ka laulā uwila e kumu i ka impedance ʻano like ʻole o ka laina.Ke kiʻekiʻe ka wikiwiki o ka hoʻouna ʻana, hiki ke noʻonoʻo.Ma lalo o kekahi mau kūlana, e like me ka mea hoʻohui alakaʻi uea, BGA pūʻolo alakai uea like me ka hale, no ka mea, o ka liʻiliʻi spacing hiki ole ke pale aku i ka hoʻololi 'ana o ka laina laula, pono e ho'āʻo e ho'ēmi i ka pono lōʻihi o ka waena inconsistent hapa.
F) Kāohi i nā uwea hōʻailona mai ka hana ʻana i nā puka lou iho ma waena o nā papa like ʻole.He mea maʻalahi kēia ʻano pilikia i ka hoʻolālā ʻana i nā papa multilayer, a ʻo ka loop ponoʻī e hoʻopilikia i ka radiation.
G) ʻAʻole pono ke ʻae ʻia ka Angle Acute a me ka Angle ʻākauHoʻolālā PCB, ka hopena i unnecessary radiation, a me ka hana hana kaʻina hana oPCBʻaʻole maikaʻi.
