Muchidimbu suma directional coupler

1.Mune microwave system, inowanzodikanwa kugovera imwe chiteshi chemagetsi e microwave mumatanho akati wandei muchikamu, iro dambudziko rekugovera simba.Izvo zvikamu zvinoziva basa iri zvinodaidzwa kuti magetsi ekugovera zvikamu, kunyanya zvinosanganisira kutungamira coupler, simba divider uye akasiyana microwave bazi michina.Izvi zvikamu zvinowanzo mutsara akawanda-port mutual instrument network, saka microwave network theory inogona kushandiswa kuongorora.Directional coupler chinhu ina-port element ine directional kutapurirana maitiro.Iyo inoumbwa nembiri mbiri dzekutumira masisitimu akabatana nekubatanidza zvishandiso.

2.The classification inobva pakubatanidza kubuda kwekutungamira, kusanganisira co-directional coupler uye reverse directional coupler.Zvinoenderana nerudzi rwayo rwekutapurirana, inogona kukamurwa kuita waveguide directional coupler, coaxial directional coupler, stripline kana microstrip directional coupler.Zvinoenderana nesimba ravo rekubatanidza, ivo vanogona kukamurwa kuita yakasimba coupling inotungamira vaviri uye isina kusimba inotungamira vaviri.Kazhinji, macouplers anotungamira akadai se0dB uye 3dB macouplers akasimba, anotungamira macouplers akadai 20dB uye 30dB haana kusimba ekutungamira, uye anotungamira ane dhayamita ye dB ari epakati coupling gwara.Zvinoenderana nesimba ravo rekutakura, ivo vanogona kukamurwa kuita yakaderera simba kutungamira vaviri uye yakakwirira simba inotungamira vaviri.Zvinoenderana nechikamu chekubuda chechishandiso, kune 90 ° inotungamira coupler.

3.Performance index Performance index of directional coupler: coupling degree isolation degree orientation degree input standing wave ratio inoshanda bandwidth.