Waveguide Twists RF Microwave millimeter Wave Xov tooj cua

RF waveguide, lub sij hawm feem ntau npog ntau hom hollow hlau waveguides thiab nto yoj waveguides. Ntawm lawv, yav dhau los hu ua lub kaw waveguide vim hais tias cov electromagnetic yoj nws kis tau tag nrho nyob rau hauv lub hlau raj. Lub tom kawg tseem hu ua qhib waveguide vim hais tias lub electromagnetic yoj nws qhia yog nyob rau hauv lub perimeter ntawm waveguide qauv. Xws li xov tooj cua zaus waveguides ua lub luag haujlwm tseem ceeb hauv microwave ncu, radars, kev sib txuas lus satellites, thiab microwave xov tooj cua txuas cov cuab yeej, uas lawv yog lub luag hauj lwm rau kev txuas microwave transmitters thiab receivers rau lawv antennas. Waveguide twist tseem hu ua waveguide torsion joint. Nws hloov pauv cov kev taw qhia ntawm polarization los ntawm thim rov qab cov kev taw qhia ntawm qhov dav thiab nqaim ntawm ob sab, kom cov hluav taws xob nthwv dej dhau los ntawm nws, cov kev taw qhia ntawm polarization hloov, tab sis cov kev taw qhia ntawm propagation tseem tsis hloov.
Thaum sib txuas millimeter yoj waveguides, yog tias qhov dav thiab nqaim sab ntawm ob lub waveguide yog qhov sib txawv, nws yuav tsum tau ntxig qhov twisted waveguide raws li kev hloov pauv. Qhov ntev ntawm lub waveguide twist yuav tsum yog qhov sib npaug ntau ntawm λ g / 2, thiab qhov ntev tshaj plaws yuav tsum tsis txhob tsawg dua 2 λ g (qhov twg λ g yog qhov wavelength ntawm waveguide).