ʻO ka ʻenehana alapine lekiō ʻole: ka loiloi kumu a me ka noi ʻana i nā kahua he nui

ʻO ka RF (Radio Frequency) e pili ana i nā nalu electromagnetic me nā alapine ma waena o 3kHz a me 300GHz, kahi mea nui i ke kamaʻilio, radar, lapaʻau lapaʻau, ka mana ʻoihana a me nā ʻano ʻē aʻe.

Nā loina kumu o ka lekiō

Hoʻokumu ʻia nā hōʻailona RF e nā oscillators, a lawe ʻia nā hawewe electromagnetic kiʻekiʻe a hoʻolaha ʻia ma o nā antennas. Aia nā ʻano antenna maʻamau i nā antenna dipole, nā antenna horn a me nā antenna patch, i kūpono no nā hiʻohiʻona noiʻi like ʻole. Hoʻihoʻi ka hopena loaʻa i ka hōʻailona RF i ka ʻike hoʻohana ma o ka demodulator e hoʻokō i ka hoʻouna ʻana i ka ʻike.

Hoʻokaʻawale a me nā ʻano modulation o ka lekiō

E like me ke alapine, hiki ke hoʻokaʻawale ʻia ke alapine lekiō i nā alapine haʻahaʻa (e like me ke kamaʻilio hoʻolaha), ka alapine waena (e like me ke kamaʻilio kelepona), a me ke alapine kiʻekiʻe (e like me ka radar a me ka lāʻau lapaʻau). Loaʻa nā ʻano hoʻololi i ka AM (no ka hoʻouna haʻahaʻa haʻahaʻa), FM (no ka hoʻouna ʻana i ka wikiwiki waena) a me ka PM (no ka hoʻouna ʻikepili kiʻekiʻe).

RFID: ka ʻenehana kumu o ka ʻike naʻauao

Hoʻohana ʻo RFID (radio frequency identification) i nā nalu electromagnetic a me nā microchips e hoʻokō i ka ʻike ʻokoʻa, a hoʻohana nui ʻia i ka hōʻoia ʻike, ka hoʻokele logistic, ka mahiʻai a me ka mahiʻai holoholona, ​​​​ka uku ʻana a me nā ʻano ʻē aʻe. ʻOiai ke kū nei ka ʻenehana RFID i nā luʻina e like me ke kumukūʻai a me ka hoʻohālikelike ʻana, ʻo kona ʻoluʻolu a me ka maikaʻi ua hoʻoikaika i ka hoʻomohala ʻana i ka hoʻokele akamai.

Hoʻohana ākea o ka ʻenehana RF

ʻIke ʻia ka ʻenehana RF ma ke kahua o ke kamaʻilio uea, kamaʻilio ukali, ʻike radar, ʻike olakino a me ka mana ʻoihana. Mai nā pūnaewele WLAN a hiki i nā electrocardiographs, mai ke kahua kaua reconnaissance i nā hale hana akamai, hoʻolaha ka ʻenehana RF i ka holomua ʻenehana a hoʻololi i ko mākou nohona.

ʻOiai ke kū nei ka ʻenehana RF i nā luʻina, me ka hoʻomohala ʻana i ka ʻepekema a me ka ʻenehana, e hoʻomau ia i ka haki ʻana i nā mea hou a lawe mai i nā mea hou aku no ka wā e hiki mai ana!