1.Nyob rau hauv lub tshuab microwave, feem ntau yuav tsum tau faib ib channel ntawm microwave fais fab mov rau hauv ob peb txoj hauv kev faib ua feem, uas yog qhov teeb meem ntawm kev faib hluav taws xob.Cov khoom uas paub txog qhov ua haujlwm no yog hu ua cov khoom siv hluav taws xob faib hluav taws xob, feem ntau suav nrog cov kev taw qhia txuas, hluav taws xob faib hluav taws xob thiab ntau yam khoom siv microwave.Cov khoom no feem ntau yog linear multi-port sib nrig sib koom tes tes hauj lwm, yog li microwave network txoj kev xav yuav siv tau rau kev tsom xam.Directional coupler yog plaub qhov chaw nres nkoj nrog cov yam ntxwv xa mus.Nws yog tsim los ntawm ob khub ntawm cov kab ke sib txuas nrog cov khoom siv sib txuas.
2.Qhov kev faib tawm yog ua raws li kev sib txuas lus tso tawm, suav nrog kev sib txuas lus sib txuas thiab thim rov qab kev coj ua sib txuas.Raws li nws hom kis tau tus mob, nws tuaj yeem muab faib ua waveguide directional coupler, coaxial directional coupler, stripline lossis microstrip directional coupler.Raws li lawv lub zog coupling, lawv tuaj yeem muab faib ua cov kev sib txuas muaj zog sib txuas thiab cov kev taw qhia tsis muaj zog.Feem ntau, cov kev taw qhia kev sib txuas xws li 0dB thiab 3dB yog cov muaj zog sib txuas, cov kev taw qhia txuas xws li 20dB thiab 30dB yog cov kev taw qhia tsis muaj zog, thiab cov kev taw qhia txuas nrog txoj kab uas hla ntawm dB yog nruab nrab coupling directional couplers.Raws li lawv cov kabmob muaj peev xwm, lawv tuaj yeem muab faib ua cov hluav taws xob tsis tshua muaj hluav taws xob thiab cov hluav taws xob hluav taws xob siab.Raws li cov zis theem ntawm lub cuab yeej, muaj ib tug 90 ° directional coupler.
3.Performance Performance index Performance index ntawm directional coupler: coupling degree cais degree orientation degree input sawv yoj piv ua hauj lwm bandwidth
Post lub sij hawm: Feb-10-2023