Ntọala ntọala nke antennas - arụmọrụ beam na bandwit

2. bandwit
Akọwapụtara bandwit nke antenna dị ka "ogo ugboro nke arụmọrụ nke ụfọdụ njirimara nke antenna na-agbaso ụkpụrụ ụfọdụ". Enwere ike ịtụle bandwit dị ka ọnụọgụ ugboro abụọ n'akụkụ abụọ nke etiti etiti (na-ezo aka na ugboro ugboro ugboro) ebe njirimara antenna (dị ka ntinye ntinye, ụkpụrụ ntụzịaka, obosara, obosara, polarization, ọkwa sidelobe, uru, ntụgharị ọkụ, radieshon). arụmọrụ) nọ n'ime oke anabatara mgbe ha tụlechara uru nke ugboro etiti.
. Maka antenna brọdband, a na-egosipụtakarị bandwit dị ka oke nke frequencies elu na nke ala maka ọrụ a na-anabata. Dịka ọmụmaatụ, bandwit nke 10: 1 pụtara na ugboro dị elu bụ ugboro 10 nke ala.
. Maka eriri eriri warara, a na-egosipụta bandwit dị ka pasent nke ọdịiche ugboro na uru etiti. Dịka ọmụmaatụ, bandwit 5% pụtara na ọnụọgụ nke anabatara bụ 5% nke etiti etiti.
N'ihi na njirimara nke antenna (ntinye ntinye, ụkpụrụ nduzi, uru, polarization, wdg) dịgasị iche na ugboro ole, njirimara bandwit abụghị ihe pụrụ iche. Ọtụtụ mgbe, mgbanwe na ụkpụrụ nduzi na impedance ntinye dị iche. Ya mere, a chọrọ bandwidth ụkpụrụ nduzi na bandwit impedance iji mesie ọdịiche a ike. Usoro bandwidth ụkpụrụ nduzi metụtara uru, ọkwa sidelobe, beamwidth, polarization na beam direction, ebe ntinye ntinye na arụmọrụ radieshon na-emetụta bandwidth impedance. A na-ekwukarị bandwit n'usoro nke oghere, ọkwa sidelobe, na njirimara ụkpụrụ.

Mkparịta ụka a dị n'elu na-eche na akụkụ nke netwọk njikọ (transformer, counterpoise, wdg) na / ma ọ bụ antenna anaghị agbanwe n'ụzọ ọ bụla ka ugboro na-agbanwe. Ọ bụrụ na enwere ike ịhazigharị akụkụ dị oke egwu nke antenna na/ma ọ bụ netwọk njikọ nke ọma ka ọ na-agbanwe ugboro ole, bandwit nke antenna warara nwere ike ịbawanye. Ọ bụ ezie na nke a abụghị ọrụ dị mfe n'ozuzu, enwere ngwa ebe enwere ike ime ya. Ihe atụ a na-ahụkarị bụ antenna redio n'ime redio ụgbọ ala, nke na-enwekarị ogologo a na-emegharị emegharị nke a ga-eji na-emegharị antenna maka nnabata ka mma.