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He aha nā ʻano polarization ʻokoʻa ʻekolu o SAR?
1. He aha ka SAR polarization? Polarization: H polarization; V vertical polarization, ʻo ia hoʻi, ke kuhikuhi haʻalulu o ke kahua electromagnetic. Ke hoʻouna ka satellite i kahi hōʻailona i ka honua, hiki ke kuhikuhi ʻia ka hawewe o ka nalu lekiō i ke kanaka ...Heluhelu hou aku -
Nā antenna kiwi a me nā antenna polarized ʻelua: nā noi a me nā wahi o ka hoʻohana
ʻO ka antenna Horn a me nā antenna polarized ʻelua ʻelua ʻano antenna i hoʻohana ʻia i nā kula like ʻole ma muli o kā lākou mau hiʻohiʻona a me nā hana. Ma kēia ʻatikala, e ʻimi mākou i nā hiʻohiʻona o nā antenna horn a me dual-polar ...Heluhelu hou aku -
ʻO ka wehewehe ʻana a me ka hoʻokaʻawale ʻana o nā antenna RFID
Ma waena o nā ʻenehana kamaʻilio kelepona, ʻo ka pilina ma waena o ka mea transceiver uila a me ka antenna o ka ʻōnaehana RFID ka mea kūikawā. I ka ʻohana RFID, ʻo nā antenna a me RFID ka mea nui ...Heluhelu hou aku -
He aha ka lekiō?
ʻO ka ʻenehana Radio Frequency (RF) he ʻenehana kamaʻilio uea, hoʻohana nui ʻia i ka lekiō, kamaʻilio, radar, kaohi mamao, nā ʻenehana ʻike uila a me nā kahua ʻē aʻe. Hoʻokumu ʻia ke kumu o ka ʻenehana lekiō uila uila i ka hoʻolaha a me ka modulation ...Heluhelu hou aku -
ʻO ke kumu o ka loaʻa antenna, pehea e helu ai i ka loaʻa antenna
ʻO ka loaʻa ʻana o ka Antenna e pili ana i ka loaʻa ʻana o ka mana radiated o kahi antenna i kahi kuhikuhi kikoʻī e pili ana i kahi antenna kumu kumu kūpono. Hōʻike ia i ka mana radiation o ka antenna i kahi kuhikuhi kikoʻī, ʻo ia hoʻi, ka hōʻailona hōʻailona a i ʻole ka hoʻokuʻu ʻana o ka ante ...Heluhelu hou aku -
ʻEhā mau hana hānai kumu o nā antenna microstrip
ʻO ke ʻano o kahi antenna microstrip ka mea maʻamau i kahi substrate dielectric, kahi radiator a me kahi pā lepo. ʻOi aku ka liʻiliʻi o ka mānoanoa o ka substrate dielectric ma mua o ka nalu. Hoʻopili ʻia ka ʻāpana metala lahilahi ma lalo o ka substrate i ka groun...Heluhelu hou aku -
Antenna Polarization: He aha ka Antenna Polarization a me ke kumu he mea nui ia
Ua ʻike nā ʻenekini uila e hoʻouna a loaʻa nā antenna i nā hōʻailona ma ke ʻano o nā nalu o ka ikehu electromagnetic (EM) i wehewehe ʻia e nā hoʻohālikelike a Maxwell. E like me nā kumuhana he nui, hiki ke aʻo ʻia kēia mau hoʻohālikelike, a me ka hoʻolaha ʻana, nā waiwai o ka electromagnetism ma nā l ...Heluhelu hou aku -
ʻO ke kumu hana a me ka hoʻohana ʻana i ka antenna horn
Hoʻomaka ka mōʻaukala o nā antenna horn i ka makahiki 1897, i ka wā i alakaʻi ai ka mea noiʻi lekiō ʻo Jagadish Chandra Bose i nā hoʻolālā hoʻokolohua paionia me ka hoʻohana ʻana i nā microwave. Ma hope mai, ua haku ʻo GC Southworth lāua ʻo Wilmer Barrow i ke ʻano o ka antenna pū kani hou i ka makahiki 1938. Mai ka ...Heluhelu hou aku -
He aha ke ʻano o ka antenna pu? He aha nā kumu nui a me nā hoʻohana?
ʻO ka antenna Horn he antenna ili, kahi antenna microwave me kahi ʻāpana ʻāpana a i ʻole ʻāpana ʻāpana ʻāpana kahi e wehe mālie ai ka pahu o ka nalu. ʻO ia ke ʻano nui o ka microwave antenna. Hoʻoholo ʻia kona kahua radiation e ka nui o ka waha a me ka propa...Heluhelu hou aku -
Maopopo iā ʻoe ka ʻokoʻa ma waena o nā alakaʻi nalu palupalu a me nā alakaʻi nalu paʻakikī?
ʻO ke alakaʻi nalu palupalu kahi laina hoʻouna e lawelawe ma ke ʻano he pale ma waena o nā lako microwave a me nā mea hānai. ʻO ka paia o loko o ka nalu palupalu he ʻano corrugated, he maʻalahi loa a hiki ke kū i ka piʻo paʻakikī, hoʻopololei a me ke kaomi. No laila, he ...Heluhelu hou aku -
Nā antenna i hoʻohana mau ʻia | Hoʻolauna i ʻeono ʻano ʻano antenna horn
ʻO Horn antenna kekahi o nā antenna i hoʻohana nui ʻia me ka hoʻolālā maʻalahi, ka laulā ākea ākea, ka mana mana nui a me ka loaʻa kiʻekiʻe. Hoʻohana pinepine ʻia nā antenna Horn e like me nā antenna hānai i ka nui o ka radio astronomy, satellite tracking, a me nā antenna kamaʻilio. Ma waho aʻe o s...Heluhelu hou aku -
mea hoʻolilo
Ma ke ʻano he ʻano hānai o nā antenna waveguide, ʻo ka hoʻolālā ʻana o ka microstrip i ka waveguide e hana koʻikoʻi i ka hoʻoili ʻana o ka ikehu. ʻO ka microstrip kuʻuna i ke kumu alakaʻi nalu penei. Aia kahi ʻimi e lawe ana i kahi substrate dielectric a hānai ʻia e kahi laina microstrip i...Heluhelu hou aku
