Qhov sib txawv ntawm RF mis yog thiab RF Circulators

Hauv kev siv cov tswv yim, RF cais tawm thiab RF cov voj voog yog feem ntau tau hais ib txhij.
Dab tsi yog qhov kev sib raug zoo ntawm RF Isolias thiab RF CARRULATORS? Qhov txawv yog dab tsi?
Kab lus no yuav hais txog kev tham txog cov teeb meem no.
Xov tooj cua tau raug rho tawm, kuj tau hu ua lub cuab yeej unidirectional, yog lub cuab yeej uas xa hluav taws xob hluav taws xob hluav taws xob. Thaum lub tshuab hluav taws xob tsis sib xws rau hauv kev coj ua ntej, lawv tuaj yeem pub txhua lub zog rau kev sib cais ntawm cov feem ntawm kev thauj khoom hloov ntawm lub teeb liab.
RF cov voj voog yog ceg kis tau cov tshuab tsis muaj reciprocal. Cov kev siv cov kab ke ntawm Ferrite RF yog y-puab cov kab ke, uas muaj peb kab sib npaug sib faib ntawm lub kaum sab xis ntawm 120 ° rau txhua lwm yam.

1,Dab tsi yog rf cais?
Xov tooj cua tau raug rho tawm, kuj tau hu ua lub cuab yeej unidirectional, yog lub cuab yeej uas xa hluav taws xob hluav taws xob hluav taws xob. Thaum lub hluav taws xob hluav taws xob tsis txaus siab nyob rau hauv cov kev taw qhia tom ntej, lawv tuaj yeem pub txhua lub zog rau lub nra thiab ua rau muaj kev cuam tshuam tseem ceeb ntawm cov nthwv dej ntawm lub nra. Qhov kev hloov pauv no tau siv los cais tawm qhov cuam tshuam ntawm kev thauj khoom hloov ntawm cov paib. Nqa cov teb txav kev cais tawm ua piv txwv, ntxiv piav qhia txog tus qauv ua haujlwm ntawm ferrite rf cais.

Kev ua haujlwm ua haujlwm cais tawm yog ua raws cov kev hloov pauv txawv ntawm cov kev yoj mus sib kis hauv ob qho kev qhia. Nws ntxiv cov phiaj rau daim phiaj ntawm ib sab ntawm ferrite daim ntawv, thiab lub fault) yog kev sib tw ntawm cov phiaj xwm tom qab (- z kev sib tw ntawm lub phiaj xwm kev sib cais, yog li ua tiav txoj haujlwm rho tawm ntawm cov haujlwm me me attenuation thiab loj rov qab atticumtion, raws li qhia hauv daim duab2.

2,Dab tsi yog RF cov kab hluav taws xob?
RF cov voj voog yog ceg kis tau cov tshuab tsis muaj reciprocal. Cov kev siv cov hluav taws xob ntau dhau yog y-puab rf ncig, raws li muaj nyob hauv peb ceg; uas yog muaj peb kab sib faib ua ke ntawm lub kaum sab xis ntawm 120 ° rau txhua lwm yam. Thaum cov khoom sib nqus sab nraud yog xoom, lub ferrite tsis yog magnetized, yog li cov hlau nplaum hauv txhua qhov kev qhia yog tib yam. Thaum lub teeb liab yog cov tswv yim los ntawm cov kab kab "①", thaj teb sib nqus raws li qhia hauv daim duab 3 (b) yuav zoo siab rau ntawm cov kev sib tshuam. Vim yog tib yam mob rau ceg "②, ③, ③,, lub teeb liab yog tso zis hauv cov khoom sib npaug. Thaum twg muaj cov kev sib nqus uas sib nqus, cov ferrite yog cov nyhuv ntawm anisotropy li pom hauv daim duab 3 (c) zoo siab rau ntawm cov kev sib tshuam. Thaum twg ib qho haum sib nqus tau siv, cov ferrite yog cov nyhuv ntawm anisotropy, muaj lub teeb liab teb ntawm ceg "③" yog tsis muaj teeb liab tawm. Thaum tseem tawm tswv yim los ntawm ceg "②", ceg "③" muaj cov zis, thaum khaum "①" tsis muaj zis; Thaum cov tswv yim los ntawm ceg "③", ceg "①" tau tawm thaum lub sij hawm ceg "②" tsis muaj zis. Nws tuaj yeem pom tau tias nws tsim cov kev ncig ntawm "①" → "→" → "→" → ", yog li nws yog hu ua RF daim duab.