Pasina pakafa muRF Front Evide, iyo inogamuchira mhedzisiro ichadzikira kwazvo. Yakakura sei mutengo? Kazhinji, neAntennas yakanaka, chinhambwe chichava kanenge kaviri zvakapora. Zvakare, yakakwira iyo antenna, yakaipa kwazvo kugamuchirwa! Nei zvakadaro? Nekuti Denga ranhasi rizere nezvakawanda zvezvikwangwani, izvi zviratidzo zviri kuvhara kumberi kugamuchira tube. Sezvo iyo yekumberi-yekupedzisira faira yakakosha, maitiro ekuita yekupedzisira-yekupedzisira faira? RF indasitiri Senior Tenzi kuti akudzidzise! Nekudaro, iyo yekumberi-yekupedzisira faira yeiyo 435MHz bhendi haisi nyore kuwedzera. Ngatitangei kuongororwa
Iyi ndiyo seti yeChebyshev Band-Pass mafirita ane yepamusoro capacitor couplitor uye pakati pe345mhz. Nekuda kwekushandiswa kwezvinhu zvekushambadzira zviripo (izvo zvine q kukosha kwe kusvika 70), kurasikirwa kwekuisa kwakakura kwazvo, kusvika -11Db, iyo inogona kushandurwa kuita mafungu akamira). Naizvozvo, kunzwa kweanogamuchira kunokanganiswa zvakanyanya, nekuti kunzwira tsitsi kunoenderana neyakajairika yekukwirira kwekutanga. Saka hazviwanzo kuona imwe inoshandiswa seizvi. Tarisa uyu mufananidzo zvakare:
Chengetedza mamwe ma parameter, iyo inductor inotsiviwa neyakajeka gomba, kunyangwe iyo vhoriyamu yakakura, asi kurasikirwa kwekuisa kwakakura kuri kuita kunge -5, izvo zvinoshandisirwa, asi zvichiri kuoma kuita. Nekuti: Iyo yekubatanidza capacitance ndeyekumusoro ndeye 02p, uye kugona kweiyo mukana wechiitiko ichi hachisi nyore kutenga, saka iwe unogona chete kudhirowa iyo capacititor paPCB, iyo inounza kuoma kune 1 budiriro. Kunyangwe iyo 12Nh Inductor haina kunaka kwazvo kumhepo, uye inofanira kunge iri isina uye inokotama, uye haina kunaka kuna tenzi kana pasina ruzivo rwakakwana. Iko kurwiswa kuchiri kureba, paramende yeaya ma capacitors inokatyamadza, uye shanduko shoma inokanganisa kuita. Saka ko kana iwe uchikwanisa kuenderera mberi nekuwedzera q kukosha kweInductor, uye pane nzira yekuenderera mberi nekuderedza kuderedza compling? Wobva wadonha bandwidth zvishoma. Mamiriro acho ezvinhu angave anotevera:
Iko kusarudzika Q Kukosha kweiyi nhamba kamwe kamwe kunova 1600, uye kureverera kunoitawo kwakakura, iyo firita inokwanisa kuve nechokwadi chekushandiswa kwesimba zvakananga kumashure kwechikamu che ic, chakangoerekana chadhonza chinhambwe. Kuita kuri nani, asi saizi yakakura kwazvo microstrip firita
Inoshanda Spiral Filter Dhizaini yeiyi Spiral Filter, vashoma uye vashoma vanhu vanogadzira chaizvo muChina, uye software yacho inogona kunyatsobatanidzwa. Kutanga, iyo yapfuura pikicha inosuma iyo chaiyo spiral filter for 435mhz nharembozha. Muchokwadi, mafirita ari nani anofanirwa kuve akanyatsoshanda kunze, isu tichagadzira yakakwirira-mhando 2-cavity uye 4-cavity mafirita emuchina uyu wekuedza.
Kutumira Nguva: Jul-17-2024