Mushure mekukurukurirana kwezviyero zve antenna muchitsauko chapfuura, imwe nyaya inokosha yekufunga nezvayo inharaunda dziri pedyo nemunda nedzekure dze antenna.
Kusimba kwemwaranzi kunoyerwa pedyo neantenna kwakasiyana nekwakayerwa kure. Kunyangwe nzvimbo iri kure iri kure neantenna, ichiri kuonekwa senzvimbo yakakodzera nekuti kusimba kwemwaranzi kunoramba kwakakwira.
Dunhu reMunda Uri Pedyo
Dunhu rakatenderedza antenna rinodaidzwa kuti near-field region. Dunhu iri rinotongwa ne inductive effects saka rinonziwo induction field region, kunyangwe richine zvimwe zvikamu zvinopenya.
Dunhu reFar-Field
Dunhu riri kure neantenna rinonzi far-field region. Rinozivikanwawo seradiation field region, sezvo radiative effects iri kutonga pano. Mazhinji ma antenna parameters akakosha, akadai sedirectivity uye radiation pattern, anotsanangurwa uye anoyerwa mukati medunhu iri.
Muenzaniso weMunda
Kugoverwa kwemunda kunogona kuyerwa nesimba remunda, uye mufananidzo unobva wabuda unonzi patani yemunda. Zvikuru sei, kana simba remuchina we antenna richiratidzwa maererano nesimba remagetsi E (V/m), chidimbu chinobuda chinonzi patani yemunda. Kana chikayerwa maererano nesimba (W), chinonzi patani yesimba.
Kugoverwa kwemifananidzo kwemunda wemwaranzi kana simba kunoenderana ne:
•Munzvimbo iri kure, pamakona enzvimbo chete (θ,ϕ);
•Munzvimbo iri pedyo nemunda, pamakona ese ari maviri (θ,ϕ) uye daro re radial (r).
Hunhu hwenzvimbo dziri pedyo nemunda nedziri kure hunogona kunzwisiswa zvakajeka nerubatsiro rwemifananidzo.
Mapatani emunda anogona kugoverwa muzvikamu zvinotevera:
•Dunhu reNear-Field Rinopindura uye Dunhu reNear-Field Rinopenya — ose pamwe chete anonzi dunhu reNear-field.
•Dunhu reFar-Field Rinopenya — rinongonzi dunhu reFar-Field.
Dunhu rakatenderedza antenna iri pedyo nemunda ndiro reactive near-field region, inozivikanwawo se non-radiative field region, uko mhedzisiro yemwaranzi isinganyanyi kukosha. Pedyo neizvi pane radiating near-field region, inonziwo Fresnel region, uko mwaranzi inova huru uye kugoverwa kwenzvimbo yekona kunoenderana nedaro remuviri kubva paantenna.
Kupfuura apa kune nzvimbo iri kure inopenya. Munzvimbo iyi, kupararira kwenzvimbo hakuenderane nedaro, uye patani inoshanda yemwaranzi inoonekwa.
Kuti udzidze zvakawanda nezve antenna, ndapota shanyira:
Nguva yekutumira: Kubvumbi-01-2026
