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Nā Kumu o ka Antenna: Pehea e hoʻomālamalama ai nā Antenna?
I ka wā e pili ana i nā antennas, ʻo ka nīnau a ka poʻe e hopohopo nui nei "Pehea e hoʻokō ʻia ai ka radiation?" Pehea e laha ai ke kahua electromagnetic i hana ʻia e ke kumu hōʻailona ma o ka laina hoʻoili a ma loko o ka antenna, a ma hope "hoʻokaʻawale" ...E heluhelu hou aku -
Hoʻolauna a me ka Hoʻokaʻawale ʻana o ka Antenna
1. Hoʻolauna i nā Antennas ʻO ka antenna kahi hoʻololi ma waena o kahi ākea manuahi a me kahi laina hoʻoili, e like me ka mea i hōʻike ʻia ma ke Kiʻi 1. Hiki i ka laina hoʻoili ke ʻano o kahi laina coaxial a i ʻole kahi ʻōmole hakahaka (waveguide), i hoʻohana ʻia e hoʻouna i ka ikehu electromagnetic mai ...E heluhelu hou aku -
Ka Pono a me ka Loaʻa o ka Antenna: Nā Formula, nā Pohō a me ke Ana ʻana
Hōʻike ka pono o ka antenna i ke ʻano o ka hoʻololi ʻia ʻana o ka mana RF i ʻae ʻia i ka mana radiation. He ʻano antenna koʻikoʻi ia no ka mea hiki i ka pohō o ke alakaʻi, ka pohō dielectric a me ka impedance mismatch ke hōʻemi i ka radiation hiki ke hoʻohana ʻia ʻoiai inā he ʻano kūpono ka antenna. ʻO ke kumu...E heluhelu hou aku -
He aha ka Beamforming?
Ma ke kahua o nā antennas array, ʻo ka beamforming, i ʻike ʻia hoʻi ʻo ka spatial filtering, he ʻenehana hana hōʻailona i hoʻohana ʻia e hoʻouna a loaʻa i nā nalu lekiō uea ʻole a i ʻole nā nalu kani ma ke ʻano kuhikuhi. He mea maʻamau ka Beamforming...E heluhelu hou aku -
Ka wehewehe kikoʻī ʻana o ka mea hoʻomālamalama kihi trihedral
ʻO kahi ʻano o ka pahuhopu radar passive a i ʻole reflector i hoʻohana ʻia i nā noi he nui e like me nā ʻōnaehana radar, ke ana ʻana, a me nā kamaʻilio ʻana ua kapa ʻia he reflector triangular. ʻO ka hiki ke hōʻike pololei i nā nalu electromagnetic (e like me nā nalu lekiō a i ʻole nā hōʻailona radar) i ke kumu,...E heluhelu hou aku -
ʻO nā antenna pepeiaohao a me nā antenna polarized pālua: nā noi a me nā wahi o ka hoʻohana
ʻO ka antenna pepeiaohao a me ka antenna polarized pālua ʻelua ʻano antennas i hoʻohana ʻia ma nā ʻano like ʻole ma muli o ko lākou mau ʻano kūikawā a me nā hana. Ma kēia ʻatikala, e ʻimi mākou i nā ʻano o nā antenna pepeiaohao a me nā polar pālua...E heluhelu hou aku -
Ka hoʻohana ʻana o ka ʻenehana brazing vacuum RFMISO
ʻO ke ʻano hana brazing i loko o ka umu hakahaka he ʻano hou ia o ka ʻenehana brazing i hana ʻia ma lalo o nā kūlana hakahaka me ka ʻole o ka hoʻohui ʻana i ka flux. ʻOiai ke hana ʻia nei ke kaʻina hana brazing i loko o kahi kaiapuni hakahaka, hiki ke hoʻopau pono ʻia nā hopena ʻino o ka ea ma ka workpiece...E heluhelu hou aku -
Hoʻolauna ʻia ka noi hoʻololi Waveguide i coaxial
Ma ke kahua o ka hoʻoili ʻana i ka alapine lekiō a me ka microwave, ma waho aʻe o ka hoʻoili ʻana i nā hōʻailona uea ʻole e pono ai nā laina hoʻoili, koi mau ka hapa nui o nā hiʻohiʻona i ka hoʻohana ʻana i nā laina hoʻoili no...E heluhelu hou aku -
RHCP vs LHCP: Pehea e ʻike ai i ka Polarization Circular
ʻO ka polarization pōʻai ʻākau (RHCP) a me ka polarization pōʻai hema (LHCP) e wehewehe ana i ke kuhikuhi e wili ai ka vector kahua uila i ka wā e laha ai ka nalu electromagnetic. He mea nui ka ʻike pololei ʻana i nā loulou ukali, radar, ana antenna a me ...E heluhelu hou aku -
Pehea e hana ai kahi antenna microstrip? He aha ka ʻokoʻa ma waena o kahi antenna microstrip a me kahi antenna patch?
ʻO ka antenna Microstrip kahi ʻano hou o ka antenna microwave e hoʻohana ana i nā ʻāpana conductive i paʻi ʻia ma kahi substrate dielectric e like me ka ʻāpana antenna radiation. Ua hoʻohana nui ʻia nā antenna Microstrip i nā ʻōnaehana kamaʻilio hou ma muli o ko lākou liʻiliʻi, māmā ke kaumaha, haʻahaʻa ke ʻano...E heluhelu hou aku -
Ka wehewehe ʻana a me ka loiloi hoʻokaʻawale maʻamau o nā antennas RFID
Ma waena o nā ʻenehana kamaʻilio uea ʻole, ʻo ka pilina ma waena o ka hāmeʻa transceiver uea ʻole a me ka antenna o ka ʻōnaehana RFID ka mea kūikawā loa. I loko o ka ʻohana RFID, he mea nui like nā antennas a me RFID ...E heluhelu hou aku -
He aha ke alapine (frequency) lekiō?
ʻO ka ʻenehana Radio Frequency (RF) kahi ʻenehana kamaʻilio uea ʻole, i hoʻohana nui ʻia i ka lekiō, nā kamaʻilio, radar, ka mana mamao, nā pūnaewele sensor uea ʻole a me nā ʻoihana ʻē aʻe. Hoʻokumu ʻia ke kumumanaʻo o ka ʻenehana alapine lekiō uea ʻole ma ka hoʻolaha a me ka modulation...E heluhelu hou aku
