Umhlahlandlela wamagagasi (noma umhlahlandlela wamagagasi) umugqa wokudlulisa ongenalutho owenziwe ngomqhubi omuhle. Uyithuluzi lokusabalalisa amandla kagesi (ikakhulukazi ukudlulisa amagagasi kagesi anama-wavelength ngokulandelana kwamasentimitha) Amathuluzi avamile (ikakhulukazi ukudlulisa amagagasi kagesi anama-wavelength ngokulandelana kwamasentimitha).
Ukukhethwa kosayizi we-waveguide engunxande kufanele kucabangele izici ezilandelayo:
1. Inkinga yobubanzi be-bandwidth ye-Waveguide
Ukuqinisekisa ukuthi amaza kagesi ngaphakathi kwebanga lemvamisa elinikeziwe angasakazeka kwimodi eyodwa ye-TE10 ku-waveguide, ezinye izindlela ezisezingeni eliphezulu kufanele zinqunywe, bese kuba yi-b
2. Inkinga yomthamo wamandla we-Waveguide
Uma kusatshalaliswa amandla adingekayo, i-waveguide ayikwazi ukuphuka. Ukwandisa u-b ngokufanele kungandisa amandla, ngakho-ke u-b kufanele abe mkhulu ngangokunokwenzeka.
3. Ukunciphisa umhlahlandlela wamagagasi
Ngemva kokuba i-microwave idlule ku-waveguide, kunethemba lokuthi amandla ngeke alahleke kakhulu. Ukwandisa i-b kungenza i-attenuation ibe ncane, ngakho-ke i-b kufanele ibe nkulu ngangokunokwenzeka.
Uma kucatshangelwa izici ezikhangayo, ubukhulu be-waveguide engunxande ngokuvamile bukhethwa kanje:
a=0.7λ, λ iyi-wavelength enqunyiwe ye-TE10
b=(0.4-0.5)a
Ama-waveguides amaningi angunxande aklanywe ngesilinganiso se-aspect ratio esingu-a:b=2:1, esaziwa ngokuthi ama-waveguides ajwayelekile, ukuze kufinyelelwe isilinganiso se-bandwidth esiphezulu esingu-2:1, okungukuthi, isilinganiso semvamisa ephezulu kakhulu kuya kwemvamisa ephansi kakhulu engu-2:1. Ukuze kuthuthukiswe umthamo wamandla, i-waveguides ene-b>a/2 ibizwa ngokuthi i-high waveguide; ukuze kuncishiswe ivolumu nesisindo, i-waveguides ene-b
Isilinganiso esiphezulu se-bandwidth esingasakazwa yi-waveguide eyindilinga yi-1.3601:1, okungukuthi, isilinganiso semvamisa ephezulu kakhulu yemodi eyodwa kuya kwemvamisa ephansi kakhulu yokunqamula yi-1.3601:1. Imvamisa yokusebenza enconywayo ye-waveguide engunxande imvamisa engu-30% ngaphezu kwemvamisa yokunqamula kanye no-5% ngaphansi kwemvamisa yesibili ephezulu yokunqamula yemodi. Lawa manani anconywayo avimbela ukuhlakazeka kwemvamisa kumaza aphansi kanye nokusebenza kwemodi eminingi kumaza aphezulu.
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Isikhathi sokuthunyelwe: Juni-12-2023
