Kedu ihe bụ antenna oge ochie

IheAntenna oge osisiA tụrụ aro (LPA) na 1957, ọ bụkwa ụdị ọzọ nke antenna na-agbanwe agbanwe na-abụghị ugboro ugboro.

Ọ dabere na echiche yiri nke a: mgbe a gbanwere antenna dịka ihe nhata τ si dị ma ka hà nhata ya na nhazi mbụ ya, antenna ahụ nwere otu arụmọrụ mgbe ihe ahụ bụ f na τf. E nwere ọtụtụ ụdị antenna oge log, nke Antenna Log Dipole (LDPA) nke a tụrụ aro na 1960 nwere njirimara bandwidth sara mbara na nhazi dị mfe, yabụ ejirila ya nke ukwuu na obere wave, ultra-shortwave na microwave bands.

Antenna oge ochie nke osisi ahụ na-emegharị usoro radieshon na njirimara mgbochi mgbe niile. Agbanyeghị, maka antenna nwere ụdị nhazi dị otu a, ọ bụrụ na τ erughị 1, mgbanwe nke njirimara ya n'ime otu okirikiri dị obere, yabụ ọ dabere na ugboro ole ọ na-eme.

E nwere ọtụtụ ụdị antenna oge log, gụnyere antenna dipole oge log na antenna monopole, antenna oge log resonant nke nwere ọdịdị V, antenna oge log periodic spiral, wdg, nke kachasị bụ antenna dipole oge log.

Dịka antenna sara mbara nke ukwuu, mkpuchi bandwidth ahụ sara mbara nke ukwuu, ruo 10:1, a na-ejikarị ya eme ihe maka mmụba mgbaàmà, nkesa n'ime ụlọ na mkpuchi mgbaama ebuli elu. Na mgbakwunye, enwere ike iji antenna logarithmic periodic dị ka isi iyi nri maka antennas reflector microwave. Ebe ọ bụ na mpaghara dị irè na-agagharị na ugboro ọrụ, ọdịiche dị n'etiti mpaghara dị irè na ihe a na-elekwasị anya na band ugboro ọrụ niile ga-adị n'ime oke ndidi a na-ekwe ka ọ dịrị n'oge nrụnye.