Kwiminyaka yakutshanje, ngophuhliso olukhawulezileyo lonxibelelwano olungenazingcingo kunye netekhnoloji yeradar, ukuze kuphuculwe umgama wokudlulisela wenkqubo, kuyimfuneko ukwandisa amandla okudlulisela wenkqubo. Njengenxalenye yenkqubo yonke ye-microwave, izihlanganisi ze-RF coaxial kufuneka zikwazi ukumelana neemfuno zokudlulisela zamandla aphezulu. Kwangaxeshanye, iinjineli ze-RF nazo kufuneka zenze uvavanyo lwamandla aphezulu rhoqo kunye nokulinganisa, kwaye izixhobo/izinto ze-microwave ezisetyenziselwa uvavanyo olwahlukeneyo nazo kufuneka zikwazi ukumelana namandla aphezulu. Zeziphi izinto ezichaphazela amandla okudlulisela izihlanganisi ze-RF coaxial? Makhe sijonge.
●Ubungakanani besixhumi
Kwimiqondiso ye-RF yefrequency efanayo, izihlanganisi ezinkulu zinokunyamezelana ngamandla amakhulu. Umzekelo, ubungakanani be-pinhole yesihlanganisi bunxulumene nomthamo wangoku wesihlanganisi, onxulumene ngqo namandla. Phakathi kwezihlanganisi ezahlukeneyo ze-RF coaxial ezisetyenziswa rhoqo, i-7/16 (DIN), i-4.3-10, kunye nezihlanganisi zohlobo lwe-N zikhulu ngobukhulu, kwaye ubungakanani be-pinhole obuhambelanayo nabo bukhulu. Ngokubanzi, ukunyamezelana kwamandla kwezihlanganisi zohlobo lwe-N kumalunga ne-SMA izihlandlo ezi-3-4. Ukongeza, izihlanganisi zohlobo lwe-N zisetyenziswa kakhulu, yiyo loo nto uninzi lwezinto ezingasebenziyo ezifana nezithinteli kunye nemithwalo engaphezulu kwe-200W zizihlanganisi zohlobo lwe-N.
●Ixesha lokusebenza rhoqo
Ukunyamezela amandla kwezihlanganisi ze-RF coaxial kuya kuncipha njengoko isantya sesignali sisanda. Utshintsho kwisantya sesignali yokudlulisa lukhokelela ngokuthe ngqo kutshintsho kwilahleko kunye nomlinganiselo wamaza okuma kwe-voltage, ngaloo ndlela luchaphazela amandla okudlulisa kunye nefuthe lesikhumba. Umzekelo, isihlanganisi se-SMA esiqhelekileyo sinokumelana namandla angama-500W kwi-2GHz, kwaye amandla aqhelekileyo anokumelana ngaphantsi kwe-100W kwi-18GHz.
●Umlinganiselo wamaza okuma kwevolthi
Isixhumi se-RF sichaza ubude bombane obuthile ngexesha loyilo. Kumgca wobude obulinganiselweyo, xa i-impedance ephawulekayo kunye ne-impedance yomthwalo zingalingani, inxalenye ye-voltage kunye nomsinga ukusuka kwisiphelo somthwalo ibonakaliswa ngasemva kwicala lamandla, elibizwa ngokuba yi-wave. Amaza abonakalisiweyo; i-voltage kunye nomsinga ukusuka kumthombo ukuya kumthwalo zibizwa ngokuba ngamaza okwenzeka. I-wave ephumayo ye-incident wave kunye ne-reflective wave ibizwa ngokuba yi-standing wave. Umlinganiselo wexabiso eliphezulu le-voltage kunye nexabiso elincinci le-standing wave libizwa ngokuba yi-voltage standing wave ratio (inokuba yi-standing wave coefficient). I-reflective wave ithatha indawo ye-channel capacity, nto leyo ebangela ukuba amandla okudlulisa anciphe.
●Ukulahleka kokufakwa
Ukulahleka kokufakelwa (IL) kubhekisa ekulahlekelweni kwamandla kumgca ngenxa yokungeniswa kwezihlanganisi zeRF. Ichazwa njengomlinganiselo wamandla okukhupha amandla okufaka. Kukho izinto ezininzi ezibangela ukulahleka kokufakwa kwesihlanganisi, okubangelwa ikakhulu kukungangqinelani kwe-characteristic impedance, impazamo yokuchaneka kwendibano, i-mating end face gap, i-axis tilt, i-lateral offset, i-eccentricity, i-processing accuracy kunye ne-electroplating, njl. Ngenxa yokubakho kokulahleka, kukho umahluko phakathi kwamandla okufaka kunye nawokukhupha, okuya kuchaphazela namandla okumelana nawo.
●Uxinzelelo lomoya oluphezulu
Utshintsho kuxinzelelo lomoya lubangela utshintsho kwi-dielectric constant yecandelo lomoya, kwaye xa uxinzelelo luphantsi, umoya uguqulwa ngokulula ukuze uvelise i-corona. Okukhona ukuphakama kuphezulu, uxinzelelo lomoya luphantsi kwaye amandla ombane ancipha.
●Ukumelana nokuqhagamshelana
Ukumelana noqhagamshelwano kwesixhumi se-RF kubhekisa ekumelaneni kwamanqaku oqhagamshelwano ee-conductors zangaphakathi nezangaphandle xa isixhumi sidityanisiwe. Ngokuqhelekileyo sikwinqanaba le-milliohm, kwaye ixabiso kufuneka libe lincinci kangangoko. Ngokuyintloko sivavanya iimpawu zoomatshini zezixhobo, kwaye iziphumo zokuxhathisa komzimba kunye nokuxhathisa kwamalungu e-solder kufuneka zisuswe ngexesha lokulinganisa. Ukubakho kokuxhathisa uqhagamshelwano kuya kubangela ukuba izixhobo zifudumale, okwenza kube nzima ukudlulisa imiqondiso ye-microwave enamandla amakhulu.
●Izixhobo ezidibeneyo
Uhlobo olufanayo lwesixhumi, olusebenzisa izixhobo ezahlukeneyo, luya kuba nokunyamezela amandla okwahlukileyo.
Ngokubanzi, malunga namandla e-antenna, cinga ngamandla ayo kunye namandla esixhumi. Ukuba kukho imfuneko yamandla aphezulu, ungenza njaloyenza ngokwezifisoisixhumi sentsimbi engagqwaliyo, kunye ne-400W-500W akukho ngxaki.
E-mail:info@rf-miso.com
Ifowuni: 0086-028-82695327
Iwebhusayithi: www.rf-miso.com
Ixesha lokuthumela: Okthobha-12-2023
