Bandwit bụ paramita antenna ọzọ dị mkpa. Bandwit na-akọwa oke ugboro ole antenna ahụ nwere ike ịgbasa ma ọ bụ nata ike nke ọma. Dịka ọ na-adịkarị, bandwidth achọrọ bụ otu n'ime paramita eji ahọrọ ụdị antenna ahụ. Dịka ọmụmaatụ, enwere ọtụtụ ụdị antenna nwere obere bandwidth. Agaghị eji antenna ndị a na ngwa broadband.
A na-ekwukarị bandwit n'ihe gbasara oke ebili mmiri voltaji (VSWR). Dịka ọmụmaatụ, a pụrụ ịkọwa antenna dị ka onye nwere VSWR <1.5 karịa 100-400 MHz. Nkwupụta ahụ na-ekwu na ihe ntụgharị uche erughị 0.2 n'ofe oke ugboro ole a kpọtụrụ aha. Ya mere, nke ike enyere na antenna, naanị 4% nke ike ahụ ka a na-egosipụta azụ na onye na-ebufe ya. Na mgbakwunye, mfu nloghachi S11 = 20* LOG10 (0.2) = 13.98 decibels.
Biko mara na ihe dị n'elu apụtaghị na a na-ebuga pasentị iri itoolu na isii nke ike ahụ na antenna n'ụdị radieshon elektrọnik a na-agbasa. A ghaghị ịtụle mfu ike.
Ọzọkwa, usoro radieshọn ga-adị iche na ugboro ole. N'ozuzu, ọdịdị nke usoro radieshọn anaghị agbanwe ugboro ole.
Enwere ike ịnwe ọkọlọtọ ndị ọzọ eji akọwa bandwit. Nke a nwere ike ịbụ polarizing n'ime oke ụfọdụ. Dịka ọmụmaatụ, enwere ike ịkọwa antenna polarized gburugburu dị ka nke nwere oke axial nke <3 dB site na 1.4-1.6 GHz (erughị 3 dB). Oke ntọala bandwit polarization a dị ihe dị ka maka antenna polarized gburugburu.
A na-akọwakarị bandwit n'ime fractional Bandwit ya (FBW). FBW bụ oke nke oke ugboro ole kewara site na etiti ugboro ole (mgbawa kachasị elu na-ebelata ugboro ole kacha ala). "Q" nke antenna na-emetụtakwa bandwit (Q dị elu pụtara obere bandwit na nke ọzọ).
Iji nye ụfọdụ ihe atụ doro anya nke bandwit, lee tebụl nke bandwit maka ụdị antenna a na-ahụkarị. Nke a ga-aza ajụjụ ndị a, "Kedu bandwit nke antenna dipole?" na "Kedu antenna nwere bandwit dị elu - patch ma ọ bụ antenna helix?". Maka ntụnyere, anyị nwere antenna nwere ugboro etiti nke 1 GHz (gigahertz) nke ọ bụla.
Bandwidth nke ọtụtụ antenna nkịtị.
Dịka ị pụrụ ịhụ site na tebụl, bandwit nke antenna nwere ike ịdị iche nke ukwuu. Antenna Patch (microstrip) nwere bandwit dị ala nke ukwuu, ebe antenna helical nwere bandwit dị ukwuu.
Oge ozi: Nọvemba-24-2023
