Dipole yakapetwa iantenna ine ma conductor maviri akafanana akabatana kumativi ese, zvichigadzira chimiro chakaita sechitenderedzwa chakavharwa, nepo nzvimbo yekudyisa iri pakati. Hurefu hwese hweantenna ihafu yewavelength, ndosaka ichinziwo half-wave folded dipole antenna.
Rudzi rwemafrequency
Antenna ye half-wave folded dipole inoshanda pamusoro pehuwandu hwema frequency angangoita 3 kHz kusvika 300 GHz, uye inonyanya kushandiswa muma terevhizheni receiver.
Maumbirwo uye Nheyo yeKushanda kweHalf-Wave Folded Dipole
Rudzi urwu rweantenna runowanzo shandiswa pamwe chete nema-array antennas kuwedzera input impedance panzvimbo yekudyisa. Antenna inonyanya kushandiswa iYagi. Mufananidzo uri pazasi unoratidza half-wave folded dipole antenna.
Kana tichienzanisa neantenna yedipole yakajairika, antenna yedipole yakapetwa inoisa imwe kondakita yakafanana (kureva, imwe waya kana tsvimbo). Nekuisa makondakita akati wandei akafanana padivi nepadivi aine insulation pakati pawo, antenna yerudzi rwearray inogona kuumbwa.
Mufananidzo uri pazasi unoratidza mashandiro eantenna yedipole yakapetwa nehafu-wave kana ichifadzwa.
Kana dhayamita yemuchina mukuru wekufambisa magetsi yakafanana neyemuchina wekufambisa magetsi uri mufolded dipole, feed-point impedance yeantenna inowedzera nekamwe ka4 (square of two). Kuwedzera uku kwefeed impedance ndicho chikonzero chikuru nei folded dipole antenna ichishandiswa zvakanyanya. Nekuda kwekugadzirwa kwayo kwe twin-lead, typical impedance yayo ingangoita 300 Ω.
Nzira yemwaranzi
Patani yemwaranzi yedipole ine hafu yemafungu yakapetwa yakafanana neye antenna ine hafu yemafungu edipole. Mufananidzo uri pazasi unoratidza patani yemwaranzi yemumativi ese yeantena iyi ine hafu yemafungu yakapetwa.
Antena ye half-wave folded dipole inoshandiswa mumapurogiramu anodiwa pakufambisa simba zvakanyanya uye panodiwa impedance yakakura.
Iyi dipole yakapetwa ndiyo chinhu chikuru chinopenya muantenna yeYagi. Mufananidzo uri pazasi unoratidza antenna yeYagi (ichakurukurwa zvakadzama gare gare). Mune iyi antenna, nzvimbo yekudyisa yakabatana ne dipole yakapetwa sechikamu chakakosha. Mumakumi emakore apfuura, rudzi urwu rwe antenna rwakashandiswa zvakanyanya pakugamuchira terevhizheni.
Izvi zvinotevera zvakanakira antenna ye half-wave folded dipole.
1. Inogamuchira zviratidzo zvakaenzana.
2. Inobata masaini anodiwa kubva kune rimwe bhendi remafrequency pasina kurasikirwa nehunhu.
3. Iyo dipole yakapetwa inowedzera simba rechiratidzo.
Kuti udzidze zvakawanda nezve antenna, ndapota shanyira:
Nguva yekutumira: Chikumi-12-2026
