1. Nhanganyaya yeAntennas
Antena chimiro chekuchinja pakati penzvimbo yakasununguka netambo yekutumira, sezvakaratidzwa muMufananidzo 1. Tambo yekutumira inogona kunge iri muchimiro chetambo ye coaxial kana chubhu isina chinhu (waveguide), iyo inoshandiswa kutumira simba remagetsi kubva kunobva kuenda kune antenna, kana kubva kune antenna kuenda kune receiver. Yekutanga iantenna inotumira, uye yekupedzisira inogamuchirakanyanga.
Mufananidzo 1 Nzira yekutumira simba remagetsi
Kutumirwa kwesystem yeantenna muchimiro chekutumira cheMufananidzo 1 kunomiririrwa neThevenin equivalent sezvakaratidzwa muMufananidzo 2, uko sosi inomiririrwa nejenareta yechiratidzo yakakodzera, mutsetse wekutumira unomiririrwa nemutsetse une impedance yeZc, uye antenna inomiririrwa ne load ZA [ZA = (RL + Rr) + jXA]. Kuramba kwemutoro RL kunomiririra kudonha kwemhepo ne dielectric kwakabatana ne antenna structure, nepo Rr inomiririra resistance yemwaranzi ye antenna, uye reactance XA inoshandiswa kumiririra chikamu chekufungidzira che impedance chakabatana ne antenna radiation. Mumamiriro ezvinhu akanaka, simba rese rinogadzirwa ne signal source rinofanira kutamisirwa ku radiation resistance Rr, iyo inoshandiswa kumiririra kugona kwemwaranzi ye antenna. Zvisinei, mukushanda kwakakodzera, kune kurasikirwa kwe conductor-dielectric nekuda kwehunhu hwe transmission line ne antenna, pamwe nekurasikirwa kunokonzerwa ne reflection (kusawirirana) pakati pe transmission line ne antenna. Tichifunga nezvekuvharirwa kwemukati kwechinhu chinobuda uye kusateerera mutsetse wekutumira uye kurasikirwa kwekuratidzira (kusawirirana), simba guru rinopihwa kune antenna iri pasi pekubatana kwemagetsi.
Mufananidzo 2
Nekuda kwekusawirirana kuripo pakati petambo yekutumira neantenna, wave inoonekwa kubva panzvimbo inosanganisirwa inoiswa pamusoro pewave yechiitiko kubva kunobva kuenda kune antenna kuti igadzire wave yakamira, iyo inomiririra huwandu hwesimba uye kuchengetwa uye chishandiso chakajairika che resonant. Pattern yakajairika yemafungu akamira inoratidzwa nemutsetse une madotsi muMufananidzo 2. Kana sisitimu yeantenna isina kugadzirwa zvakanaka, tambo yekutumira inogona kushanda zvakanyanya sechikamu chekuchengetedza simba pane chishandiso chewaveguide uye chekutumira simba.
Kurasikirwa kunokonzerwa netambo yekutumira, antenna nemafungu akamira hazvidiwi. Kurasikirwa kwemitsara kunogona kuderedzwa nekusarudza tambo dzekutumira dzinorasikirwa zvishoma, nepo kurasikirwa kweantenna kunogona kuderedzwa nekuderedza kuramba kurasikirwa kunomiririrwa neRL muMufananidzo 2. Mafungu akamira anogona kuderedzwa uye kuchengetwa kwesimba mumutsara kunogona kuderedzwa nekuenzanisa impedance yeantenna (mutoro) nechimiro che impedance yetambo.
Mumasisitimu asina waya, pamusoro pekugamuchira kana kutumira simba, maantenna anowanzo dikanwa kuti awedzere simba rinopfuudzwa munzira dzakasiyana uye kudzvinyirira simba rinopfuudzwa kune dzimwe nzira. Nokudaro, pamusoro pemidziyo yekuona, maantenna anofanirawo kushandiswa semidziyo yekutungamira. Maantenna anogona kuva mumhando dzakasiyana kuti agutse zvinodiwa. Inogona kuva waya, aperture, patch, element assembly (array), reflector, lens, nezvimwewo.
Mumasisitimu ekutaurirana asina waya, maantenna ndeimwe yezvinhu zvakakosha. Kugadzirwa kwakanaka kwemaantenna kunogona kuderedza zvinodiwa zvesisitimu uye kuvandudza mashandiro esisitimu yese. Muenzaniso wekare iterevhizheni, uko kugamuchira nhepfenyuro kunogona kuvandudzwa nekushandisa maantenna anoshanda zvakanyanya. Maantenna ndiwo masisitimu ekutaurirana ayo maziso ari kuvanhu.
2. Kupatsanurwa kweAntena
Antena yenyanga iantenna yakarongwa, antenna ye microwave ine chikamu chakatenderera kana che rectangular chinovhurika zvishoma nezvishoma pakupera kwe waveguide. Ndiyo mhando ye antenna ye microwave inonyanya kushandiswa. Munda wayo wemwaranzi unotsanangurwa nehukuru hwe aperture yenyanga uye rudzi rwe propagation. Pakati pazvo, simba remadziro enyanga pamwaranzi rinogona kuverengerwa uchishandisa musimboti we geometric diffraction. Kana kureba kwenyanga kukaramba kusina kuchinja, saizi ye aperture uye musiyano we quadratic phase zvichawedzera nekuwedzera kwe horn opening angle, asi gain haizochinji nehukuru hwe aperture. Kana frequency band yenyanga ichida kuwedzerwa, zvakakosha kuderedza reflection pamutsipa uye aperture yenyanga; reflection ichaderera sezvo saizi ye aperture ichiwedzera. Maumbirwo e antenna yenyanga ari nyore, uye pattern yemwaranzi iri nyorewo uye iri nyore kudzora. Inowanzo shandiswa se medium directional antenna. Parabolic reflector horn antennas dzine wide bandwidth, low side lobes uye high efficiency dzinowanzo shandiswa mu microwave relay communications.
RM-DCPHA105145-20(10.5-14.5GHz)
RM-BDHA1850-20(18-50GHz)
RM-SGHA430-10(1.70-2.60GHz)
2. Kanyanga ye microstrip
Maumbirwo e microstrip antenna anowanzo kuve ne dielectric substrate, radiator uye ground plane. Ukobvu hwe dielectric substrate hudiki zvikuru pane wavelength. Metal thin layer iri pasi pe substrate yakabatana ne ground plane, uye simbi thin layer ine chimiro chakati inogadzirwa kumberi kuburikidza ne photolithography process se radiator. Chimiro che radiator chinogona kuchinjwa nenzira dzakawanda zvichienderana nezvinodiwa.
Kukura kwetekinoroji yekubatanidza ma microwave uye maitiro matsva ekugadzira zvakasimudzira kugadzirwa kwema microstrip antennas. Kana tichienzanisa nema microstrip antennas echinyakare, microstrip antennas hadzisi diki chete, dzakareruka muhuremu, dzisina chimiro, dziri nyore kuenderana, asiwo dziri nyore kubatanidza, dzakaderera mumutengo, dzakakodzera kugadzirwa kwehuwandu, uye dzine zvakanakira zvemhando dzakasiyana dzemagetsi.
RM-MA424435-22(4.25-4.35GHz)
RM-MA25527-22(25.5-27GHz)
Antena yewaveguide slot iantenna inoshandisa nzvimbo dziri muchimiro chewaveguide kuti iwane mwaranzi. Inowanzova nemaplate maviri esimbi akafanana anogadzira waveguide ine mukaha wakamanikana pakati peplate mbiri. Kana mafungu eelectromagnetic apfuura nemukaha wewaveguide, chiitiko che resonance chinozoitika, nokudaro chichigadzira munda wakasimba weelectromagnetic pedyo nemukaha kuti iwane mwaranzi. Nekuda kwechimiro chayo chiri nyore, waveguide slot antenna inogona kuwana broadband uye high-efficiency radiation, saka inoshandiswa zvakanyanya muradar, communications, wireless sensors nedzimwe nzvimbo mu microwave ne millimeter wave bands. Zvakanakira zvayo zvinosanganisira kushanda zvakanaka kwemwaranzi, hunhu hwebroadband uye kugona kwakanaka kwekudzivirira kukanganiswa, saka inofarirwa nemainjiniya nevaongorori.
RM-PA7087-43（71-86GHz）
RM-PA1075145-32 (10.75-14.5GHz)
RM-SWA910-22(9-10GHz)
Biconical Antenna iantenna yebroadband ine chimiro chebiconical, icho chinoratidzwa nekupindura kwema frequency akawanda uye kushanda zvakanaka kwemwaranzi. Zvikamu zviviri zve conical zve biconical antenna zvakaenzana. Kuburikidza nechimiro ichi, mwaranzi inoshanda mu wide frequency band inogona kuwanikwa. Inowanzo shandiswa munzvimbo dzakadai se spectrum analysis, radiation measurement uye EMC (electromagnetic compatibility) testing. Ine impedance matching yakanaka uye radiation characteristics uye yakakodzera kushandiswa kwemamiriro ezvinhu anoda kufukidza ma frequency akawanda.
RM-BCA2428-4 (24-28GHz）
RM-BCA218-4 (2-18GHz)
Antena yeSpiral iantenna yeBroadband ine chimiro chespiral, icho chinoratidzwa nekupindura kwakafara uye kushanda zvakanaka kwemwaranzi. Antena yeSpiral inoita kuti pave nekusiyana kwepolarization uye hunhu hwemwaranzi hwakafara kuburikidza nechimiro chespiral coils, uye yakakodzera radar, satellite communication uye wireless communication systems.
RM-PSA0756-3(0.75-6GHz)
RM-PSA218-2R(2-18GHz)
Kuti udzidze zvakawanda nezve antenna, ndapota shanyira:
Nguva yekutumira: Chikumi-14-2024
