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Nā Laina Coaxial Microwave: Nā ʻAno, nā Pohō a me ke Alakaʻi Koho
Lawe nā laina coaxial microwave i ka ikehu RF ma waena o nā antennas, nā mea hoʻāʻo, nā mea hoʻoili, nā mea loaʻa, a me nā ʻāpana microwave ʻē aʻe. Hāʻawi kā lākou kūkulu concentric i kahi ala hoʻoili i kāohi ʻia a me ka pale ikaika, akā hilinaʻi ka hana ma luna o nā mea he nui ma mua o ke kaula ...E heluhelu hou aku -
Hoʻolauna i ke kaʻina hana hana huahana RFMISO—ka hoʻoheheʻe ʻana i ka vacuum
ʻO ka ʻenehana brazing vacuum kahi ʻano hana e hoʻohui ai i ʻelua a ʻoi aku paha mau ʻāpana metala ma ka hoʻomehana ʻana iā lākou i nā mahana kiʻekiʻe a ma kahi ʻano vacuum. Eia kahi hoʻolauna kikoʻī i ka ʻenehana brazing vacuum: Va...E heluhelu hou aku -
Hoʻolālā hoʻololi alapine RF-RF Up converter,RF Down converter
Hōʻike kēia ʻatikala i ka hoʻolālā mea hoʻololi RF, me nā kiʻikuhi poloka, e wehewehe ana i ka hoʻolālā RF upconverter a me ka hoʻolālā RF downconverter. Ua haʻi ʻia nā ʻāpana alapine (frequency) i hoʻohana ʻia ma kēia mea hoʻololi alapine C-band. Hana ʻia ka hoʻolālā ma kahi papa microstrip me ka hoʻohana ʻana i ka discre...E heluhelu hou aku -
Alapine (frequency) o ka antenna
He antenna hiki ke hoʻouna a loaʻa paha i nā nalu electromagnetic (EM). ʻO nā hiʻohiʻona o kēia mau nalu electromagnetic e komo pū ana me ka mālamalama mai ka lā, a me nā nalu i loaʻa e kāu kelepona paʻalima. Ke loaʻa nei i kou mau maka nā antenna e ʻike i nā nalu electromagnetic ma kahi fre ...E heluhelu hou aku -
Nā Antennas Koa: Nā Noi, Nā ʻAno a me ke Alakaʻi Koho
Hoʻokumu nā antennas koa i ka pilina RF ma waena o kahi kahua pale a me ke kaiapuni electromagnetic. Kākoʻo lākou i nā kamaʻilio, radar, nā loulou ukali, ka nānā ʻana i ka spectrum, ka ʻimi ʻana i ke kuhikuhi, ka telemetry a me nā ʻōnaehana kaua uila ma ka honua, ka kaʻa, ka lewa,...E heluhelu hou aku -
Ka laulā o ka antenna
ʻO ka bandwidth kekahi ʻano antenna kumu. Hōʻike ka bandwidth i ka laulā o nā alapine (frequencies) e hiki ai i ka antenna ke hoʻolaha pololei a loaʻa paha ka ikehu. ʻO ka maʻamau, ʻo ka bandwidth i koi ʻia kekahi o nā ʻano i hoʻohana ʻia e koho i ke ʻano antenna. No ka laʻana, aia nā m...E heluhelu hou aku -
Ka pono o ka antenna a me ka loaʻa ʻana o ka antenna
Pili ka pono o kahi antenna i ka mana i hāʻawi ʻia i ka antenna a me ka mana i hoʻopuka ʻia e ka antenna. E hoʻopuka kahi antenna kūpono loa i ka hapa nui o ka ikehu i hāʻawi ʻia i ka antenna. Hoʻopili kahi antenna kūpono ʻole i ka hapa nui o ka mana i nalowale i loko o ka antenna...E heluhelu hou aku -
He aha ka Planar Antenna? ʻAno, ʻAno a me nā Hoʻohana
ʻO ka antenna planar he antenna haʻahaʻa kona ʻano hoʻomālamalama i hoʻonohonoho ʻia ma luna a i ʻole e like me kahi ʻili pālahalaha. Ma muli o ka hoʻolālā, hiki i nā mea hoʻomālamalama ke paʻi ʻia nā ʻāpana metala, nā slots, nā alakaʻi spiral, nā puka waveguide, a i ʻole nā mea he nui i hui pū ʻia e like me...E heluhelu hou aku -
Antenna Directivity: Formula, Loaʻa a me ke Ana ʻana
He aha ka Antenna Directivity? Pane wikiwiki: Hōʻike ka Antenna directivity i ka ikaika o ka antenna e hoʻopaʻa i ka mana i hoʻolaha ʻia i kahi kuhikuhi kikoʻī i hoʻohālikelike ʻia me kahi radiator isotropic kūpono. Loaʻa i kahi radiator isotropic kahi directivity o 1, a i ʻole 0 dBi. ʻOi aku ka kiʻekiʻe o ka directivity pr...E heluhelu hou aku -
ʻAntenna Horn Gain Maʻamau: E hoʻomaopopo i kāna Kumu Hana a me nā Wahi Hoʻohana
ʻO ka antenna pepeiaohao loaʻa maʻamau he antenna kuhikuhi i hoʻohana pinepine ʻia, nona kahi mea hoʻoili a me kahi mea loaʻa. ʻO kāna pahuhopu hoʻolālā ka hoʻonui ʻana i ka loaʻa o ka antenna, ʻo ia hoʻi, e hoʻopili i ka ikehu alapine lekiō i kahi kuhikuhi kikoʻī. Ma keʻano laulā ...E heluhelu hou aku -
ʻAntenna Biconical: Kumu Hana, Hoʻolālā a me nā Noi
ʻO kahi antenna biconical he antenna broadband i hoʻokumu ʻia e ʻelua mau cone conductive i kau ʻia ma ka piko a i ka piko a hānai ʻia ma ko lākou mau apexes. ʻO kona geometry e loli mālie ana e hāʻawi i kahi bandwidth hana ākea ma mua o kahi dipole uea lahilahi maʻamau, e lilo ia i mea pono no ke ana ʻana o ka wideband, ...E heluhelu hou aku -
Hoʻolauna i nā antennas log-periodic a me kā lākou mau kahua noi
ʻO ka antenna log-periodic ke ʻano antenna makemake ʻia no nā antenna kuhikuhi ultra-wideband haʻahaʻa-alapine. Loaʻa iā ia nā ʻano o ka loaʻa waena, ka bandwidth alapine hana, a me ke kūlike hana maikaʻi i loko o ke kaula alapine hana. Kūpono no ke kaʻa...E heluhelu hou aku
