Ikaika hawewe modulation a me kona icai?

Ke panel o kekahi kēia Radio i AM-FM kuapo. E like me ka rula, ano o nā mea kūʻai mai mai i manaʻo e pili ana i ka mea i ka manaʻo o kēia mau palapala, ia mea nui, e hoomanao i FM o kana punahele FM Radio noaioee i broadcasts i ka hoʻokani, a me ke olonā i quality, aʻoʻoe ke hopu i ka "Lighthouse". Inā mākou e hele i ka oaoieei-lāliʻi ma ka liʻiliʻi loa no ka manual pae, oe, e huli i ka AM - Ua ikaika hawewe modulation a me FM - alapine (frequency). Pehea e ka mea oko?

E puhi mai ka'ōlelo Radio puolo kani neaiaea pono undergo kekahi hoʻololi. Ma ka wahi mua ia e ke i pono no ka Radio hōʻike. Ikaika hawewe modulation o ke ala mua ana, signalers, nā kānakaʻenehana aʻoʻia e ke hoʻouna i leo a me ka mele papahana ma luna o ka lewa. American Fessenden i ka 1906, a me ke kōkua o ÿole mechanical oscillation mīkini hana wāwahie ua 50 kHz, lilo iho la ka mua i loko o ka mōʻaukala o ka lawe alapine (frequency). Next ia i manao i oaoieei-pilikia ma ka simplest alanui, e hoonoho iho i ka mea hoʻolele leo ia auoiaea'ōwili hao. Ma lalo o ka aoao o na ale kani ma ke kalapona ka pauka i loko o ka upa makani hoʻololi kona ia'ku, a me ka nui o ka hōʻailona a pau loa, mai ka mīkini hana wāwahie a hiki i ka pū i hiki kukuna, ua hoʻemi 'ole, a mahuahua nui ke kaumaha ma muli o lākou. No ikaika hawewe modulation i ua invented, a laila loli ma ka ikaika hawewe o ka lawe neaiaea no laila, i ka lilo i ka wahī laina hoʻopili like i ke kinona o ka pū i hiki neaiaea. Ma na twenties, i piʻi aʻela me mechanical nā mīkini uila ma ka huina'ine-kukui. He nui hoemiia ka nui a me ke kaumaha transmitters.

Frequency modulation kekahi mai ka ikaika hawewe no laila ia i ka laulā o ka lawe nalu koe ikaika, hoʻololi kona alapine (frequency). E like me ke kumu, a me ka lolouila circuitry he mea'ē aʻe aoao ma i ka hōʻailona hōʻike ua "noho" ma ka Radio alapine (frequency). Pae loli a me ka momentum ka latitu i haawiia mai i ka inoa o ka pae a me ka lāʻau ikiʻai wale ka laula modulation. Ua manao i ka ikaika hawewe modulation Radio ka hoʻoleleʻana me ke ala mai o ka lā. Akā, na mea huli mai okoa, ka mea, ua hoopaa iho la o kona kulana,ʻoiai i loko o ka iki Hoʻololi 'ano.

Ka Uluwehi o koi no ka 'ike saturation alapine (frequency) paipai nā kānakaʻenehana, e nana aku no ka aoao, e hoomahuahua i ka helu o nā kaha pū i hiki ma luna o ka mea hookahi ke kōā. Hiʻona o ka nunui-Kanal ka hoʻoleleʻana i manao theorem Kotel'nikova a me Nyquist ke'ākeʻakeʻa mai, nae, ma ka hou ana i ka hōʻailona quantization, he mea hiki, e hoʻonui i ka 'ikepili e haawe i ka palapala moana ma ka hoololi ana i ka pae. Quadrature ikaika hawewe modulation - he papa hana no ia EYI, ma i ka ia alapine ua ho'īli okoa no lepa, pae 'oni iki e pili ana i kekahi i kekahi ma ka 90 degere. Ano apau loa o ka eha-pae 'ole he huihui' ana o nā quadrature eiiiiiaiou i ho'ākāka 'ia hewa trigonometric oihana a me cos, nolaila i ka inoa.

Quadrature ikaika hawewe modulation ua hoʻomano hoʻohana 'ia i loko o kikohoʻe' ōlelo. Ma kona ano ia mea he huihui 'ana o ka pae a me ka ikaika hawewe modulation.