He aha ka RF / Microwave Filter?

Ua wehewehe ʻia nā kānana lekiō (RF) a me nā kānana microwave he ʻano kānana uila, i hoʻolālā ʻia e hana i nā hōʻailona ma ka megahertz a i ka gigahertz frequency ranges (medium frequency to very high frequency). ʻO kēia ʻano alapine o ka kānana ka laulā i hoʻohana ʻia e ka hapa nui o ka lekiō hoʻolaha, televise, kamaʻilio kelepona (kelepona, Wi-Fi, etc.), a no laila ʻo ka hapa nui o nā RF a me nā mīkini microwave e komo i kekahi ʻano kānana ma nā hōʻailona i hoʻouna ʻia a loaʻa paha. Hoʻohana mau ʻia ia mau kānana e like me nā poloka kūkulu no nā duplexers a me nā diplexers e hoʻohui a hoʻokaʻawale paha i nā kaha alapine he nui.

Nā hana:
1. Hiki i ka kānana Rf ke hōʻemi i ka hoʻopilikia ʻana o ka band frequency a hoʻomaikaʻi i ka hana o nā mea hana i hui pū ʻia.
2. ʻO kahi kānana RF e ʻae wale i ke alapine a me ke kahawai e hoʻouna ʻia a loaʻa mai e hele a hoʻemi i ka hoʻopili ʻana i ka hōʻailona ma waho o ke kahawai.

Ma ke kumu o kāna hana, e like me ke alapine o ka hōʻailona hana no ka hoʻokaʻawale ʻana i nā kānana RF, ua māhele nui ʻia lākou i ʻehā mau ʻāpana, ʻo ia hoʻi, kānana pass haʻahaʻa (LPF), kānana pass kiʻekiʻe (HPF), kānana band pass ( BPF) a me ke kānana band stop (BSF).

1. Ke kānana haʻahaʻa haʻahaʻa : E pili ana i ka kānana e hiki ai ke hele i ka hōʻailona alapine haʻahaʻa akā ʻaʻole hiki ke hele ka hōʻailona alapine kiʻekiʻe;
2. ʻO kāna kānana kiʻekiʻe: ʻO ia ka mea kū'ē,ʻo ia hoʻi, hiki i nā hōʻailona kiʻekiʻe ke hele aʻaʻole hiki ke hele i nā hōʻailona haʻahaʻa;
3. Kāpena Band-pass: E pili ana i ke alapine i kekahi alapine o nā hōʻailona hiki ke hala, RF kānana a ma waho o ka alapine o nā hōʻailona hikiʻole ke hele;
4. Kāpena Band-stop: ʻO ka hana o kahi kānana band-stop ka mea kū'ē,ʻo ia hoʻi, ua kāohiʻia nā hōʻailona i loko o kahi hui, akā uaʻaeʻia nā hōʻailona ma waho o kēia alapine e hele ma;

Hiki ke hoʻokaʻawale ʻia nā kānana RF i kāna kānana SAW, kānana BAW, kānana LC, kānana cavity, kānana seramika e like me ke ʻano a i ʻole nā ​​​​mea o lākou.

ʻO Jingxin, ma ke ʻano he ʻoihanamea hana i nā ʻāpana passive RF, hiki ke hāʻawi aku i nā kānana RF i luna no ka ʻike ʻana, i hoʻomohala ʻia ma mua o 10 mau makahiki e hoʻolālā a hana i nā kānana RF no nā noi like ʻole, e like me ka solution DAS, ʻōnaehana BAD, kamaʻilio pūʻali koa, a loaʻa ka mahalo nui no ka hoʻokō mai ka nā mea kūʻai aku. Hiki ke hana ʻia nā kānana hoʻolālā maʻamau e Jingxin e like me ka wehewehe ʻana, ʻoi aku ka nui o nā nīnau.