A waveguide (kana wave guide) igomba rekutapurirana tubular tambo rakagadzirwa neakanaka conductor. Icho chishandiso chekuparadzira simba remagetsi (kunyanya kufambisa masaisai emagetsi ane wavelengths pahurongwa hwemasentimita) Zvishandiso zvakajairika (kunyanya kufambisa masaisai emagetsi ane wavelengths pahurongwa hwemasentimita).
Kusarudzwa kwerectangular waveguide size inofanirwa kufunga zvinotevera zvinhu:
1. Waveguide bandwidth dambudziko
Kuve nechokwadi chekuti mafungu emagetsi mukati meiyo yakapihwa frequency renji anogona kupararira mune imwechete TE10 modhi mune waveguide, mamwe ma-high-order modes anofanirwa kudimburwa, ipapo b.
2. Waveguide simba simba dambudziko
Kana uchiparadzira simba rinodiwa, waveguide haigone kuputsa. Kuwedzera zvakakodzera b kunogona kuwedzera simba remagetsi, saka b inofanira kunge yakakura sezvinobvira.
3. Attenuation of waveguide
Mushure mekunge microwave ichipfuura nepawaveguide, zvinotarisirwa kuti simba harizorasikirwe zvakanyanya. Kuwedzera b kunogona kuita kuti attenuation idiki, saka b inofanira kunge yakakura sezvinobvira.
Tichifunga nezvezvinhu zvinokwezva, saizi yerectangular waveguide inowanzosarudzwa se:
a=0.7λ, λ ndiyo yakagurwa-yavelength yeTE10
b=(0.4-0.5)a
Mazhinji rectangular waveguides akagadzirwa ane aspect ratio ye: b = 2: 1, inozivikanwa seyakajairwa waveguides, kuitira kuti yakakura bandwidth reshiyo ye2: 1 igone kuwanikwa, ndiko kuti, chiyero cheiyo yakakwira frequency kune yakaderera cutoff. frequency ndeye 2:1. Kuti uvandudze simba remagetsi, waveguide ine b> a / 2 inonzi high waveguide; kuti uderedze huwandu uye huremu, iyo waveguide ine b
Iyo yakanyanya bandwidth ratio iyo denderedzwa waveguide inogona kuparadzira ndeye 1.3601: 1, ndiko kuti, chiyero chepamusoro-soro-mode frequency kune yakaderera-cut-off frequency ndeye 1.3601: 1. Iyo yakakurudzirwa kushanda frequency yerectangular waveguide ndeye frequency 30% pamusoro peiyo cutoff frequency uye 5% pazasi yechipiri yepamusoro mode cutoff frequency. Aya maitiro anokurudzirwa anodzivirira kupararira kwefrequency pane yakaderera frequencies uye multimode kushanda pakakwirira frequencies.
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Nguva yekutumira: Jun-12-2023
