Pasina sefa muRF kumberi kumagumo, iyo yekugamuchira mhedzisiro ichaderedzwa zvakanyanya. Kuderedzwa kwakakura sei? Kazhinji, neantennas akanaka, kureba kuchave kanenge ka2 zvakanyanya. Zvakare, iyo yakakwirira antenna, iyo yakaipisisa kugamuchira! Nei zvakadaro? Nekuti denga ranhasi rakazara nezviratidzo zvakawanda, masaini aya ari kuvharira kumberi kwekugamuchira chubhu. Sezvo iyo yekumberi-yekupedzisira sefa yakakosha, sei kuita iyo yekumberi-yekupedzisira sefa? Rf indasitiri mukuru tenzi kukudzidzisa iwe! Nekudaro, iyo yekumberi-yekupedzisira sefa ye435MHz bhendi haisi nyore kuwedzera. Ngatitangei kuongorora
Iyi seti yeChebyshev band-pass mafirita ane yepamusoro capacitor coupling uye yepakati frequency ye435MHz. Nekuda kwekushandiswa kweiyo inotengeswa chip inductors (iyo ine Q kukosha inosvika makumi manomwe), kurasikirwa kwekuisa kwakakura zvakanyanya, kunosvika -11db, uye imwe curve ndiyo ratidziro (iyo inogona kushandurwa kuita masaisai akamira). Naizvozvo, kunzwisiswa kweanogamuchira kunokanganisa zvakanyanya, nekuti kunzwisiswa kweanogamuchira kwakanangana nenhamba yeruzha rwedanho rekutanga rekukwidziridzwa kwepamusoro, kunyangwe tekinoroji yakanaka, senge ruzha rwekukwidziridzwa kwepamusoro kunogona kudzorwa. kusvika 0.5, asi kurasika kwepuragi kwesefa yekumberi kuchatowedzera kuwedzera ruzha ne11db. Saka kashoma kuona imwe ichishandiswa seizvi. Tarisa mufananidzo uyu zvakare:
Chengetedza mamwe ma parameter, iyo inductor inotsiviwa nekoiri iri nani isina mhango, kunyange vhoriyamu yakakura, asi kurasikirwa kwekuisa kunova pamusoro -5, iyo inonyanya kushandiswa, asi ichiri kuoma kuita. Nokuti: The coupling capacitance kumusoro ndeye 0.2P chete, uye capacitance yehukuru iyi haisi nyore kutenga, saka iwe unogona chete kutora capacitor paPCB, iyo inounza kuoma kune 1 kubudirira. Kunyangwe iyo inductor ye12nH haina kunyatso kufambisa mhepo, uye inofanirwa kunge isina mhango uye yakapindirana, uye hazvina kunaka kugona kana pasina ruzivo rwakakwana. Iyo inductance ichiri yakakura zvishoma, iyo parameter yeaya ma capacitor anonyanya kunzwisiswa, uye shanduko shoma inokanganisa mashandiro. Saka zvakadini kana iwe uchikwanisa kuramba uchiwedzera kukosha kweQ kweinductor, uye pane nzira yekuenderera mberi nekuderedza coupling capacitance? Zvadaro kuderedza bandwidth zvishoma. Mamiriro acho angave akadai:
Iyo inductance Q kukosha kweiyo nhamba inoerekana yava 1600, uye inductance zvakare inova yakakura, girafu inova yakanaka kwazvo, iyi sefa inogona kuve nechokwadi chekusarudza uye kunzwisiswa kweanogamuchira uye zvimwe zviratidzo, kana pasina kutariswa kwekushandiswa kwesimba zvakananga mu kumashure kwechidimbu cheIC, kamwe kamwe dhonza chinhambwe kumusoro. Kuita kurinani, asi saizi yakakura kwazvo microstrip sefa
Inoshanda spiral sefa dhizaini Kune iyi spiral sefa, vashoma uye vashoma vanhu vanozonyatso gadzira muChina, uye software inogona kunyatsobatanidzwa. Chekutanga, mufananidzo wapfuura unosuma iyo chaiyo spiral sefa ye435MHz nharembozha. Muchokwadi, mafirita ari nani anofanirwa kuve akanyatso kugadzirwa kunze, isu tichagadzira emhando yepamusoro 2-cavity uye 4-cavity mafirita emuchina uyu wekuyedza.
Nguva yekutumira: Jul-17-2024