laula lobe nui
No kēlā me kēia antenna, i ka hapanui o nā hihia, ʻo kona ʻili a i ʻole ke ʻano kuhikuhi o ka ʻili he ʻano petal, no laila ua kapa ʻia ke kumu kuhikuhi i ka lobe pattern.Ua kapa ʻia ka lobe me ka ʻaoʻao ʻoi loa o ka radiation ka lobe nui, a ʻo ke koena i kapa ʻia ʻo ka lobe ʻaoʻao.
Ua mahele hou ia ka laula lobe i ka hapalua mana (a i ole 3dB) ka laula lobe a me ka laula lobe mana zero.E like me ka mea i hōʻike ʻia ma ka kiʻi ma lalo nei, ma nā ʻaoʻao ʻelua o ka waiwai nui o ka lobe nui, ʻo ka Angle ma waena o nā ʻaoʻao ʻelua kahi e hāʻule ai ka mana i ka hapalua (0.707 manawa o ka ikaika o ke kahua) ua kapa ʻia ʻo ka hapalua-power lobe laula.
ʻO ka Angle ma waena o nā ʻaoʻao ʻelua kahi e hāʻule ai ka mana a i ʻole ka ikaika o ke kahua i ka mua mua i kapa ʻia ʻo ka laula lobe zero-power.
Antenna polarization
ʻO ka polarization kahi ʻano koʻikoʻi o ka antenna.ʻO ka hoʻouna ʻana i ka polarization o ka antenna ʻo ia ke ʻano neʻe o ke kahua uila vector endpoint o ka antenna transmitting radiating electromagnetic hawewe i kēia kuhikuhi, a ʻo ka polarization e loaʻa ana ke ʻano neʻe o ke kahua uila vector endpoint o ka antenna e loaʻa ana i ka nalu mokulele i kēia. kuhikuhi.
ʻO ka polarization o ka antenna e pili ana i ka polarization o ka vector kahua kikoʻī o ka nalu lekiō, a me ke ʻano o ka neʻe ʻana o ka hopena o ka vector kahua uila i ka manawa maoli, e pili ana i ke kuhikuhi o ka lewa.ʻO ka antenna i hoʻohana ʻia i ka hoʻomaʻamaʻa pinepine e koi i ka polarization.
Hiki ke hoʻokaʻawale ʻia ka polarization i ka polarization linear, circular polarization a me elliptic polarization.E like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei, kahi laina pololei o ke alahele o ka hopena o ke kahua uila ma ke Kiʻi (a), a ʻaʻole e loli ka Angle ma waena o ka laina a me ka axis X me ka manawa, ua kapa ʻia kēia nalu polarized. linearly polarized wave.
Ke nānā ʻia ma ke ala o ka hoʻolaha ʻana, ua kapa ʻia ka ʻōwili ʻana i ka ʻāwili ʻana o ka vector kahua uila he hawewe polarized polarized lima ʻākau, a kapa ʻia ka ʻōwili kūwaho ʻana he hawewe polarized polarized lima hema.Ke ʻike ʻia e kūʻē i ka ʻaoʻao o ka hoʻolaha ʻana, huli nā hawewe lima ʻākau ma ka ʻaoʻao ʻākau a ʻo nā nalu lima hema e huli i ka uaki.
Nā koi radar no nā antenna
Ma ke ʻano he antenna radar, ʻo kāna hana ka hoʻohuli ʻana i ke kahua nalu alakaʻi i hana ʻia e ka transmitter i loko o ke kahua radiation space, e loaʻa i ka leo i hōʻike ʻia e ka pahuhopu, a hoʻohuli i ka ikehu o ka echo i ke kula nalu alakaʻi e hoʻouna i ka mea hoʻokipa.ʻO nā koi kumu o ka radar no ka antenna maʻamau ka:
Hāʻawi i ka hoʻololi ʻana i ka ikehu maikaʻi (ana ʻia i ka pono antenna) ma waena o ke kahua radiation ākea a me ka laina hoʻouna;Hōʻike ka hana antenna kiʻekiʻe e hiki ke hoʻohana pono i ka ikehu RF i hana ʻia e ka transmitter
Ka hiki ke hoʻokuʻi i ka ikehu kiʻekiʻe ma ke ala o ka pahu hopu a i ʻole ka loaʻa ʻana o ka ikehu kiʻekiʻe mai ke ala o ka pahuhopu (ana ʻia i ka loaʻa antenna)
Hiki ke ʻike ʻia ka hāʻawi ʻana i ka ikehu o ke kahua radiation space ma ka lewa e like me ka hana o ka ea o ka radar (ana ʻia e ka antenna direction diagram).
Hoʻohālikelike ka mana polarization kūpono i nā hiʻohiʻona polarization o ka pahuhopu
ʻO ka hana mechanical ikaika a me ka hana maʻalahi.Hiki i ka nānā ʻana i nā wahi a puni ke nānā pono i nā pahuhopu a pale i nā hopena makani
E hoʻokō i nā koi tactical e like me ka neʻe ʻana, maʻalahi o ka camouflage, kūpono no nā kumu kikoʻī, etc.
Ka manawa hoʻouna: Feb-14-2023
