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Antenna iwi iʻa

ʻO ka antenna iwi iʻa, ka mea i kapa ʻia ʻo edge antenna, he antenna hoʻokipa pōkole kūikawā.Ma nā manawa maʻamau e nā hōʻiliʻili ʻelua pili pūnaewele o kahi oscillator symmetric, loaʻa ka oscillator symmetric ma hope o kahi hōʻiliʻili capacitor liʻiliʻi ma ka pūnaewele.Ma ka hopena o ka laina hōʻiliʻili, ʻo ia hoʻi, ʻo ka hopena e kū pono ana i ke kuhikuhi kamaʻilio, ua hoʻopili ʻia kahi kūʻē like me ka impedance hiʻohiʻona o ka laina hōʻiliʻili, a pili ka hopena ʻē aʻe i ka mea hoʻokipa ma o kahi mea hānai.Ke hoʻohālikelike ʻia me ka antenna rhombus, loaʻa i ka antenna iwi iʻa nā pōmaikaʻi o ka sidelobe liʻiliʻi (ʻo ia hoʻi, ikaika ka loaʻa ʻana o ka mana ma ke kuhikuhi lobe nui, nāwaliwali ka loaʻa ʻana i nā ʻaoʻao ʻē aʻe), liʻiliʻi liʻiliʻi ma waena o nā antennas a me kahi liʻiliʻi;ʻO nā hemahema ka haʻahaʻa haʻahaʻa, ʻoi aku ka paʻakikī o ka hoʻonohonoho ʻana a me ka hoʻohana ʻana.

Antenna Yagi

Kāhea ʻia ka antenna.Hoʻokumu ʻia ia me kekahi mau lāʻau metala, ʻo kekahi o ia mea he radiator, kahi hōʻike lōʻihi ma hope o ka radiator, a he mau mea pōkole i mua o ka radiator.Hoʻohana mau ʻia ka oscillator hawewe hapalua i hoʻohana ʻia i ka radiator.ʻO ka ʻaoʻao o ka radiation kiʻekiʻe o ka antenna e like me ke kuhikuhi kuhikuhi o ke alakaʻi.Loaʻa i ka Yagi antenna nā mea maikaʻi o ka hoʻolālā maʻalahi, māmā a ikaika, ʻoluʻolu e hānai;Nā pōʻino: ka laina alapine haiki a me ka maikaʻi ʻole o ka anti-interference.Nā noi ma ke kamaʻilio hawewe ultrashort a me ka radar.

Antenna peʻahi

Loaʻa iā ia ka pā metala a me ka uea metala ʻano ʻelua ʻano.Ma waena o lākou, ʻo ia ka pā metala fan, ʻo ia ke ʻano uea metala fan.Hoʻonui kēia ʻano ʻano antenna i ka ʻāpana alapine no ka mea e hoʻonui i ka ʻāpana ʻāpana o ka antenna.Hiki i nā antenna uea ke hoʻohana i ʻekolu, ʻehā a ʻelima paha uea metala.Hoʻohana ʻia nā antenna ʻāpana no ka loaʻa ʻana o ka nalu ultrashort.

Antenna cone lua

ʻO ka antenna cone ʻelua he ʻelua cones me nā poʻo cone kū'ē, a hānai i nā piko cone.Hiki ke hana ʻia ka cone me ka ʻili metala, ka uwea a i ʻole ka mesh.E like me ka antenna cage, hoʻonui ʻia ka ʻāpana alapine o ka antenna i ka piʻi ʻana o ka ʻāpana ʻāpana o ka antenna.Hoʻohana nui ʻia ka antenna cone pālua no ka loaʻa ʻana o ka nalu ultrashort.

Antenna parabolic

ʻO kahi antenna paraboloid kahi antenna microwave kuhikuhi i loko o kahi mea hoʻonaninani paraboloid a me kahi radiator i kau ʻia ma ke kiko kikoʻī a i ʻole ke koʻi kiko o ka reflector paraboloid.Hōʻike ʻia ka hawewe electromagnetic i hoʻokuʻu ʻia e ka radiator e ka paraboloid, e hana ana i kahi kukuna kuhikuhi loa.

ʻO ka reflector parabolic i hana ʻia i ka metala me ka conductivity maikaʻi, aia ka nui o nā ʻano ʻehā: rotating paraboloid, cylindrical paraboloid, ʻoki ʻana i ka rotating paraboloid a me ka elliptic edge paraboloid, ʻo ka mea maʻamau i hoʻohana ʻia ʻo rotating paraboloid a me cylindrical paraboloid.ʻO ka hapalua hawewe oscillator, ka hawewe hāmama, ka hawewe nalu slotted a pēlā aku e hoʻohana mau ʻia i nā radiators.

Loaʻa i ka parabolic antenna nā mea maikaʻi o ka hoʻolālā maʻalahi, ka kuhikuhi ikaika a me ka band frequency hana ākea.ʻO nā hemahema: no ka mea, aia ka radiator ma ke kahua uila o ka reflector parabolic, he nui ka hopena o ka reflector i ka radiator, a paʻakikī ke loaʻa kahi hoʻokūkū maikaʻi ma waena o ka antenna a me ka mea hānai.ʻOi aku ka nui o ka radiation hope;ʻAʻohe kūlana palekana;ʻO ka pololei hana kiʻekiʻe.Hoʻohana nui ʻia ka antenna i ke kamaʻilio relay microwave, ke kamaʻilio scatter tropospheric, radar a me ke kīwī.

Antenna paraboloid kiwi

He ʻelua ʻāpana ka horn paraboloid antenna: he pū a me ka paraboloid.Uhi ka paraboloid i ka pū, a aia ka piko o ka pū ma ke kiko o ka paraboloid.ʻO ka pū ka radiator, hoʻomālamalama ia i nā hawewe electromagnetic i ka paraboloid, nā hawewe electromagnetic ma hope o ka noʻonoʻo paraboloid, i kālele ʻia i loko o kahi kukuna haiki i hoʻokuʻu ʻia.ʻO nā mea maikaʻi o ka horn paraboloid antenna: ʻaʻohe pane o ka reflector i ka radiator, ʻaʻohe hopena pale o ka radiator i nā nalu i hōʻike ʻia, a pili maikaʻi ka antenna me ka mea hānai;He liʻiliʻi ka radiation hope;Kiʻekiʻe o ka palekana;He ākea loa ke kaha alapine hana;Hoʻolālā maʻalahi.Hoʻohana nui ʻia nā antennas Horn paraboloid i nā kamaʻilio relay trunk.

Antenna pū

Kāhea ʻia ʻo Angle antenna.Hoʻokumu ʻia ia me kahi alakaʻi nalu like ʻole a me kahi alakaʻi hawewe pū me kahi ʻāpana keʻa e hoʻonui mālie.ʻEkolu mau ʻano ʻano antenna: fan horn antenna, horn horn antenna a me conical horn antenna.ʻO Horn antenna kekahi o nā antenna microwave maʻamau i hoʻohana ʻia ma ke ʻano he radiator.ʻO kona pōmaikaʻi, ʻo ia ka laulā hana pinepine;ʻOi aku ka nui o ka hemahema, a no ka caliber like, ʻaʻole ʻoi aku ka ʻoi o kona kuhikuhi e like me ka parabolic antenna.

Antenna lens kiwi

Hoʻokumu ʻia ia me kahi pū a me kahi lens i kau ʻia ma ka puka o ka pū, no laila ua kapa ʻia ʻo ia he antenna lens horn.E ʻike i ka Antenna Lens no ke kumu o ka lens.Loaʻa i kēia ʻano antenna kahi kīʻaha alapine hana ākea, a ʻoi aku ka palekana ma mua o ka parabolic antenna.Hoʻohana nui ʻia ia i ka kamaʻilio ʻana o ka microwave me ka nui o nā kahawai.

Antenna Lens

I loko o ka pūna kenimika, hiki ke hoʻohana ʻia nā kumulāʻau optical i nā antenna.I loko o ka optics, hiki ke hoʻololi ʻia ka nalu spherical i hoʻomālamalama ʻia e kahi kumu kiko ma ke kiko kiko o ka lens i ka nalu mokulele ma o ka refraction ma o ka lens.Hana ʻia ka antenna lens me kēia kumu.Aia ia me ka lens a me ka radiator i hoʻonoho ʻia ma ke kiko kiko o ka lens.ʻElua ʻano o ka lens antenna: dielectric decelerating lens antenna a me metal accelerating lens antenna.Hana ʻia ka lens me ka haʻahaʻa - poho kiʻekiʻe - alapine pinepine, mānoanoa ma waena a lahilahi a puni.Hoʻolohi ʻia ka nalu pōʻai mai kahi kumu radiation i kona hele ʻana i kahi lens dielectric.No laila, he ala lōʻihi ka deceleration o ka nalu pōʻai ma ka ʻaoʻao waena o ka lens, a he ala pōkole o ka deceleration ma ka ʻaoʻao.ʻO ka hopena, hele ka nalu spherical i ka lens a lilo i hawewe mokulele, ʻo ia hoʻi, lilo ka pāhawewe.Aia kekahi lens i kekahi mau papa metala o nā lōʻihi like ʻole i hoʻonohonoho like ʻia.Ua kū pololei ka pā metala i ka honua, a ʻo ka pili kokoke i ka waena, ʻoi aku ka pōkole.Pili nā nalu me ka pā metala

Hoʻonui ʻia ka hoʻolaha ʻana.Ke hele ka nalu pōʻai mai ke kumu radiation i loko o ka lens metala, ua hoʻokē ʻia ma ke ala lōʻihi e kokoke ana i ka lihi o ka lens a me ke ala pōkole ma waena.ʻO ka hopena, ʻo ka nalu pōʻai e hele ana ma kahi leki metala e lilo i nalu mokulele.

Loaʻa i ka antenna lens nā pono penei:

1. He liʻiliʻi ka lobe ʻaoʻao a me ka lobe hope, no laila ʻoi aku ka maikaʻi o ke kiʻikuhi kuhikuhi;

2. ʻAʻole kiʻekiʻe ka pololei o ka hana ʻana i nā lens, no laila ua maʻalahi ka hana ʻana.ʻO kona mau hemahema he haʻahaʻa haʻahaʻa, hoʻolālā paʻakikī a me ke kumukūʻai kiʻekiʻe.Hoʻohana ʻia nā antenna Lens i ke kamaʻilio relay microwave.

Antenna slot

Wehe ʻia hoʻokahi a i ʻole kekahi mau ʻāpana haiki ma luna o kahi pā metala nui a hānai ʻia me kahi laina coaxial a i ʻole alakaʻi nalu.Ua kapa ʻia ka antenna i hana ʻia ma kēia ʻano he antenna slotted, ʻike ʻia hoʻi he antenna slit.No ka loaʻa ʻana o ka radiation unidirectional, hana ʻia kahi lua ma ke kua o ka pā metala, a hānai pono ʻia ke awāwa e ke alakaʻi nalu.He ʻano maʻalahi ka antenna slotted a ʻaʻohe protrusion, no laila kūpono loa ia no nā mokulele kiʻekiʻe.ʻO ka hemahema ʻo ia ka paʻakikī o ke kani ʻana.

Antenna dielectric

ʻO ka antenna dielectric kahi mea hoʻoheheʻe haʻahaʻa haʻahaʻa haʻahaʻa (maʻamau me ka polystyrene) i hana ʻia me ke koʻokoʻo poepoe, hoʻokahi hopena i hānai ʻia me kahi laina coaxial a i ʻole alakaʻi nalu.ʻO 2 kahi hoʻonui o ka mea hoʻokele i loko o ka laina coaxial, e hana ana i kahi oscillator e hoʻoulu i nā hawewe electromagnetic;ʻO 3 ka laina coaxial;ʻO 4 ka lima metala.ʻO ka hana o ka lima ʻaʻole ia e hoʻopili wale i ke koʻokoʻo dielectric, akā e noʻonoʻo pū i ka nalu electromagnetic, i mea e hōʻoia ai i ka hawewe electromagnetic e hauʻoli e ka mea hoʻokele o loko o ka laina coaxial a hoʻolaha i ka hopena manuahi o ke koʻokoʻo dielectric. .ʻO nā mea maikaʻi o ka antenna dielectric he liʻiliʻi liʻiliʻi a me ke kuhikuhi kuhikuhi.ʻO ka hemahema, ʻo ia ka nalowale o ka medium a no laila ʻaʻole pono.

Antenna periscope

I nā kamaʻilio relay microwave, kau pinepine ʻia nā antenna ma nā kākoʻo kiʻekiʻe loa, no laila pono nā mea hānai lōʻihi e hānai i nā antenna.ʻO ka mea hānai lōʻihi e hoʻopilikia i nā pilikia he nui, e like me ke ʻano paʻakikī, ka nalowale o ka ikehu kiʻekiʻe, ka distortion ma muli o ka noʻonoʻo ʻana o ka ikehu ma ka hui feeder, a me nā mea ʻē aʻe. ka lepo a me ka mea hoʻoheheʻe aniani luna i kau ʻia ma kahi bracket.ʻO ka radiator aniani haʻahaʻa maʻamau he antenna parabolic, a ʻo ka reflector aniani luna he pā metala.Hoʻopuka ka radiator aniani haʻahaʻa i nā nalu electromagnetic i luna a hōʻike iā lākou mai ka pā metala.ʻO nā pono o ka periscope antenna he haʻahaʻa haʻahaʻa haʻahaʻa, haʻahaʻa haʻahaʻa a me ka hana kiʻekiʻe.Hoʻohana nui ʻia ia i ke kamaʻilio relay microwave me ka liʻiliʻi liʻiliʻi.

ʻO ka antenna spiral

He antenna me ke ʻano helical.Hoʻokumu ʻia ia me ka helix metala maikaʻi conductive, maʻamau me ka hānai laina coaxial, laina coaxial o ka laina waena a hoʻopili ʻia kekahi ʻaoʻao o ka helix, hoʻopili ʻia ka mea hoʻokele o waho o ka laina coaxial a me ka pūnaewele metala honua (a i ʻole ka pā).ʻO ke kuhikuhi radiation o ka antenna helical e pili ana i ke anapuni o ka helix.Ke ʻoi aku ka liʻiliʻi o ka pōʻai o ka helix ma mua o ka lōʻihi hawewe, ʻo ke kuhikuhi o ka radiation ikaika loa e kū pololei i ke axis o ka helix.Ke hoʻonohonoho ʻia ka pōʻai o ka helix ma ke ʻano o hoʻokahi lōʻihi hawewe, ʻoi aku ka ikaika o ka radiation ma ke axis o ka helix.

Antenna tuner

ʻO kahi pūnaewele hoʻohālikelike impedance e hoʻopili ai i kahi transmitter i kahi antenna, i kapa ʻia he antenna tuner.ʻOkoʻa loa ka impedance komo o ka antenna me ke alapine, ʻoiai ʻo ka impedance puka o ka transmitter.Inā pili pono ka transmitter a me ka antenna, i ka wā e loli ai ke alapine o ka transmitter, ʻo ka impedance mismatch ma waena o ka transmitter a me ka antenna e hōʻemi i ka mana radiation.Ke hoʻohana nei i kahi antenna tuner, hiki ke hoʻohālikelike i ka impedance ma waena o ka transmitter a me ka antenna i loaʻa i ka antenna ka mana radiated kiʻekiʻe loa i kēlā me kēia alapine.Hoʻohana nui ʻia nā antenna tuners ma ka honua, kaʻa, moku a me nā lekiō pōkole lele.

E hoʻopaʻa i ka antenna manawa

He antenna ākea ākea, a i ʻole he antenna kūʻokoʻa pinepine.He antenna log-periodic maʻalahi nona ka lōʻihi a me nā wā dipole e pili ana i kēia pili: ua hānai ʻia ka dipole τ e kahi laina hoʻoili ʻelua-uwea like ʻole, i hoʻololi ʻia ma waena o nā dipoles pili.Loaʻa i kēia antenna ke ʻano o kēlā me kēia ʻano ma ke alapine F e hana hou ʻia i kēlā me kēia alapine i hāʻawi ʻia e τ a i ʻole f, kahi n he integer.Hoʻokaʻawale like ʻia kēia mau alapine ma kahi pahu lāʻau, a ua like ka manawa me ka log o τ.No laila ka inoa logarithmic periodic antenna.Hoʻopuka pinepine nā antenna log-periodic i ke ʻano o ka radiation a me nā ʻano impedance.Akā no kēlā ʻano hana, inā ʻaʻole ʻoi aku ka liʻiliʻi o τ ma mua o 1, liʻiliʻi loa kona mau hiʻohiʻona ʻano i loko o kahi manawa, no laila kūʻokoʻa maoli ia i ka alapine.Nui nā ʻano antenna log-periodic, e like me log-periodic dipole antenna a me monopole antenna, log-periodic resonant V-shaped antenna, log-periodic spiral antenna, etc. ʻO ka mea maʻamau ka log-periodic dipole antenna.Hoʻohana nui ʻia kēia mau antenna i nā kaula ma luna o nā nalu pōkole a pōkole.