Zvinhu zvine tembiricha chaiyo iri pamusoro pe zero chaiyo zvinoburitsa simba. Huwandu hwesimba rinoburitswa ne radiation hunowanzo ratidzwa mu tembiricha yakaenzana TB, inowanzo nzi tembiricha yekupenya, iyo inotsanangurwa se:
TB ndiyo tembiricha yekupenya (tembiricha yakaenzana), ε ndiyo emissivity, Tm ndiyo tembiricha chaiyo yemamorekuru, uye Γ ndiyo emissivity coefficient yepamusoro ine chekuita ne polarization yemafungu.
Sezvo kuburitsa chiedza kuri pakati pe [0,1], kukosha kukuru kunogona kusvika pakupisa kwekupenya kwakaenzana nekupisa kwemamorekuru. Kazhinji, kuburitsa chiedza kunoenderana nefrequency yekushanda, polarization yesimba rinoburitswa, uye chimiro chemamorekuru echinhu. Pama microwave frequency, ma emitters esimba rakanaka echisikigo ivhu rine tembiricha yakaenzana ye300K, kana denga riri munzira ye zenith rine tembiricha yakaenzana ye5K, kana denga riri munzira yakatwasuka ye100~150K.
Kupisa kwekupenya kunoburitswa nechiedza chakasiyana kunobatwa neantenna uye kunoonekwa pakanyangamugumo uri muchimiro chekupisa kweantenna. Tembiricha inoonekwa pamucheto weantenna inopiwa zvichibva pafomura iri pamusoro apa mushure mekuyera pateni yekuwedzera kweantenna. Inogona kuratidzwa seizvi:
TA ndiyo tembiricha yeantenna. Kana pasina kurasikirwa kwedata uye tambo yekutumira pakati peantenna nereceiver isina kurasikirwa, simba reruzha rinotumirwa kumureceiver nderinotevera:
Pr isimba reruzha rweantenna, K iBoltzmann constant, uye △f ibandwidth.
mufananidzo 1
Kana tambo yekutumira pakati peantenna nereceiver isingashande zvakanaka, simba reruzha rweantenna rinowanikwa kubva mufomura iri pamusoro rinofanira kugadziriswa. Kana tembiricha chaiyo yetambo yekutumira yakafanana neT0 pakureba kwese, uye attenuation coefficient yetambo yekutumira inobatanidza antenna nereceiver iri α isingachinji, sezvakaratidzwa muMufananidzo 1. Panguva ino, tembiricha inoshanda yeantenna pamugumo wereceiver ndeiyi:
Kupi:
Ta ndiyo tembiricha yeantenna panzvimbo yekugamuchira, TA ndiyo tembiricha yeruzha rweantenna panzvimbo yeantenna, TAP ndiyo tembiricha yeantenna panzvimbo yekupisa chaiyo, Tp ndiyo tembiricha yeantenna chaiyo, eA ndiyo tembiricha yekupisa yeantenna, uye T0 ndiyo tembiricha chaiyo yetambo yekutumira.
Saka, simba reruzha re antenna rinofanira kugadziriswa kuti:
Kana mugamuchiri wacho aine tembiricha yeruzha T, simba reruzha resystem pamagumo emugamuchiri ndeiri:
Ps isimba reruzha rwesystem (panzvimbo yekupedzisira yekugamuchira), Ta itembiricha yeruzha rweantenna (panzvimbo yekupedzisira yekugamuchira), Tr itembiricha yeruzha rwekugamuchira (panzvimbo yekupedzisira yekugamuchira), uye T itembiricha yeruzha inoshanda yesystem (panzvimbo yekupedzisira yekugamuchira).
Mufananidzo 1 unoratidza hukama huripo pakati pema parameter ese. Tembiricha inoshanda yeruzha T ye antenna ne receiver ye radio astronomy system inotangira pa K shoma kusvika pa K zviuru zvakati wandei (huwandu hwakajairika hunenge 10K), izvo zvinosiyana zvichienderana nerudzi rwe antenna ne receiver uye frequency yekushanda. Kuchinja kwetembiricha ye antenna panzvimbo yekupedzisira ye antenna kunokonzerwa nekuchinja kwemwaranzi inotarirwa kunogona kuva kudiki kusvika pa K zvishoma mugumi.
Tembiricha yeantenna pakupinda kweantenna nepakuguma kwemugamuchiri inogona kusiyana nemadhigirii akawanda. Mutsetse wekutumira wepfupi kana kuti wepasi-pasi unogona kuderedza zvikuru musiyano uyu wetembiricha kusvika padiki kusvika pagumi redhigirii.
RF MISOibhizinesi repamusoro-soro rinoongorora R&D uyekugadzirwamaantenna nemidziyo yekutaurirana. Takazvipira kuR&D, hunyanzvi, dhizaini, kugadzirwa uye kutengeswa kwemaantenna nemidziyo yekutaurirana. Chikwata chedu chine vanachiremba, masters, mainjiniya vakuru nevashandi vane hunyanzvi hwepamberi, vane hwaro hwakasimba hwedzidziso uye ruzivo rwakakura rwekushanda. Zvigadzirwa zvedu zvinoshandiswa zvakanyanya mumabasa akasiyana-siyana ekutengeserana, kuyedza, masisitimu ekuyedza uye mamwe mashandisirwo akawanda. Tinokurudzira zvigadzirwa zvemaantenna akawanda ane mashandiro akanaka:
RM-BDHA26-139(2-6GHz)
RM-LPA054-7(0.5-4GHz)
RM-MPA1725-9(1.7-2.5GHz)
Kuti udzidze zvakawanda nezve antenna, ndapota shanyira:
Nguva yekutumira: Chikumi-21-2024
