Ma ka polarization o nā hawewe electromagnetic

ʻO ka waiwai i hoʻololi ʻia ka orientation a me ka amplitude o ka hawewe uila electromagnetic me ka manawa i kapa ʻia ʻo polarization ma optics.Inā he kānāwai koʻikoʻi kēia hoʻololi, ua kapa ʻia ʻo ia ka nalu electromagnetic polarized.

('ōlelo ʻia ma hope aku he hawewe polarized)

ʻO 7 mau mea nui e ʻike e pili ana i ka "polarization hawewe electromagnetic":

1. Electromagnetic hawewe polarization pili i ka waiwai i ka orientation a me ka amplitude o electromagnetic hawewe uila ikaika hoololi me ka manawa, i kapaia polarization ma optics.Inā he kānāwai koʻikoʻi kēia hoʻololi, ua kapa ʻia ʻo ia ka hawewe electromagnetic polarized (i kapa ʻia ma hope nei he hawewe polarized).Inā pili mau ke kahua uila o ka hawewe electromagnetic polarized i kahi mokulele (transverse) e kū pono ana i ke kuhikuhi hoʻolaha, a neʻe ka hopena o kāna vector kahua uila ma kahi ala paʻa, ua kapa ʻia kēia nalu electromagnetic polarized he hawewe polarized plane.ʻO ka sagittal trajectory o ke kahua uila i kapa ʻia ʻo ka polarization curve, a ua kapa ʻia ka hawewe polarization e like me ke ʻano o ka curve polarization.

2. 2. No ka hawewe polarized ho'okahi mokulele, he ellipse (kapa 'ia ka hawewe polarization), no laila ua kapa 'ia ka hawewe polarized elliptical.Nānā ʻia mai ka ʻaoʻao hoʻolaha, inā ʻo ka ʻaoʻao hoʻololi o ka vector kahua uila e like me ke kānāwai helix ʻākau, ua kapa ʻia ʻo ia ka hawewe polarized lima ʻākau;Inā kū ka ʻaoʻao o ka hoʻololi ʻana a kū i ke kānāwai helix hema, ua kapa ʻia ʻo ia ka hawewe polarized hema.E like me nā ʻāpana geometric o ka ellipse polarization (e ʻike i nā ʻāpana geometric o ka ellipse polarization), hiki ke wehewehe ʻia ka hawewe polarization elliptical, ʻo ia hoʻi, ka ratio axial (ka ratio o ka axis lōʻihi i ke axis pōkole), ka polarization ka huina kuhikuhi (ka kihi oblique o ke axis lōʻihi) a me ka ʻaoʻao o ka hoʻololi ʻana (ka ʻākau a i ʻole ka ʻaoʻao hema).ʻO ka hawewe polarized elliptical me ka ratio axial e like me ka 1 ua kapa ʻia he hawewe polarized pōʻai, a ʻo kona pihi polarization he pōʻai, hiki ke hoʻokaʻawale ʻia i nā ʻaoʻao ʻākau a i ʻole ka lima hema.I kēia manawa, ʻaʻole maopopo ka ʻaoʻao polarization, a ua hoʻololi ʻia ke kihi oblique o ka orientation mua o ka vector kahua uila.ʻO ka nalu polarization elliptical nona ka lākiō axial i ka palena ʻole i kapa ʻia ʻo linear polarization wave.ʻO ka hoʻonohonoho ʻana o kāna vector kahua uila ma kahi laina pololei, a ʻo ke kihi oblique o kēia laina pololei ʻo ia ke kuhikuhi polarization.I kēia manawa, nalowale ka ʻaoʻao o ka rotation i kona manaʻo a hoʻololi ʻia e ka pae mua o ka ikaika o ke kahua uila.

3. Hiki ke hoʻoheheʻe ʻia kēlā me kēia hawewe polarization elliptical i ka huina o ka hawewe polarization pōʻai lima ʻākau (e hōʻike ʻia e ka māka wāwae R) a me ka hawewe polarization pōʻai hema (e hōʻike ʻia e ka kaha wāwae L).Inā hoʻoheheʻe ʻia ka nalu polarized i ʻelua mau hawewe polarized me nā ʻaoʻao ʻaoʻao ʻē aʻe, ua like ko lākou mau amplitudes a ua like ko lākou ʻano mua me ko ka nalu polarized linearly.

4. Hiki ke decomposed kekahi hawewe polarization elliptical i ka huina o elua linearly polarized hawewe me orthogonal orientation.ʻO ka maʻamau, ʻo kekahi o nā nalu polarized linearly e kuhikuhi ʻia i ka mokulele ākea (a pololei i ka kuhikuhi hoʻolaha), i kapa ʻia ʻo ka hawewe polarized horizontally (i hōʻike ʻia e ka māka wāwae h);ʻO ka hoʻonohonoho ʻana o ka hawewe polarized linearly ʻē aʻe i ka manawa like e pili ana i ka hoʻonohonoho ʻana a me ka hoʻolaha ʻana o ka nalu polarized i luna, i kapa ʻia he nalu polarized vertically (e hōʻike ʻia e ka māka wāwae V) (ke kuhikuhi ʻia ke kahua uila o ka nalu polarized vertically. ma ka laina plumb wale nō inā aia ka ʻaoʻao hoʻolaha i ka mokulele ākea).He ʻokoʻa ka huina amplitude a me ka huina o ka māhele mua o nā mea hoʻoheheʻe uila o nā ʻāpana nalu polarized ʻelua.

5. Hiki ke ho'ākāka 'ia ka hawewe polarization elliptical like 'a'ole wale ma nā palena geometric o ka ellipse polarization, akā, ma nā palena ho'i ma waena o 'elua mau 'āpana polarization pō'ai pō'ai a 'elua mau mea polarization laina orthogonal.ʻO ka palapala ʻāina pōʻai polarization ʻo ia ke kuhi ʻana o nā ʻokoʻa o nā ʻāpana polarization like ʻole ma ka ʻili spherical ma ka mokulele equatorial.ʻO ka antenna e hoʻouna ana a loaʻa i nā hawewe electromagnetic he mau waiwai polarization, hiki ke kapa ʻia e like me ka polarization hawewe electromagnetic i ke kuhikuhi radiation ikaika loa i ka wā i hoʻohana ʻia ai e like me ka antenna transmitting.

6. ʻO ka maʻamau, i mea e hoʻokō ai i ka hoʻoili mana kiʻekiʻe ma waena o ka hoʻouna ʻana a me ka loaʻa ʻana o nā antenna, pono e hoʻohana ʻia ka hoʻouna ʻana a me ka loaʻa ʻana o nā antenna me nā waiwai polarization like.Kapa ʻia kēia ʻano hoʻonohonoho hoʻonohonoho ʻana i ka polarization matching.I kekahi manawa, i mea e pale aku ai i ka induction o kekahi nalu polarization, anantenname nā waiwai polarization orthogonal e hoʻohana ʻia, e like me ka antenna polarization vertical orthogonal i kahi hawewe polarization ākea;He orthogonal ka antenna circularly polarized lima akau i ka nalu polarized polarized lima hema.Kapa ʻia kēia kūlana hoʻonohonoho i ka hoʻokaʻawale polarization.

7. Hiki ke ho'ohana 'ia ka ho'oka'awale 'ana ma waena o nā hawewe polarization 'elua.No ka laʻana, me ka hoʻohana ʻana i kahi antenna hoʻokahi me ka hana polarization ʻelua e ʻike ai i ka hoʻouna ʻana i ke kahawai ʻelua a i ʻole transceiver duplex;Hoʻohana ʻia ʻelua antenna polarization orthogonal ʻokoʻa e ʻike i ka hoʻokipa ʻokoʻa polarization a i ʻole ka nānā stereoscopic (e like me ke kiʻi stereo).Eia kekahi, i nā ʻōnaehana ʻike ʻike e like me ka ʻike mamao a me ka ʻike ʻana i ka radar target, hiki i ka waiwai polarization o nā nalu i hoʻopuehu ʻia ke hāʻawi i ka ʻike hou aʻe ma waho o ka ʻike amplitude a me ka pae.

Kelepona: (028) 84215383

Address: No.24-2 Longtan Industrial Urban Park, Chenghua District, Chengdu, Sichuan, Kina