Awle. Mahse, antenna system hmasaah chuan flat feeder an hmang a, chu chu coaxial cable a ni lo.
RF coaxial cable hi hmun hnih ah hriatthiam a ngai a ni.
RF: RF tih hian electromagnetic frequency a kawk a, space-ah a radiate thei a, 300kHz atanga 300GHz thleng a ni.
RF hi radio frequency current a ni a, chu chu high-frequency alternating electromagnetic wave tihna shorthand a ni.
Alternating current second khata vawi 1000 aia tlem lo inthlak chu low-frequency current an ti a, second khata vawi 10000 aia tam lo inthlak chu high-frequency current an ti bawk. RF hi chutiang khawpa frequency sang-frequency current chu a ni.
RF (300K-300G) hi high-frequency (10K aia tam) range chhunga frequency sang zawk band a ni.
Electronics theory-ah chuan conductor kal tlanga current a kal chuan conductor vel chu magnetic field a lo piang a; conductor chhunga alternating current a kal chuan conductor chhehvelah alternating electromagnetic field a lo awm thin. Hei hi electromagnetic wave an ti a.
100kHz hnuai lam frequency nei electromagnetic wave te hi Leilung hian a hip lut a, tha takin a kal thei lo. Mahse, electromagnetic wave frequency 100kHz aia sang nei chu boruak kaltlangin a darh thei a, boruak pawn lam kil lama ionosphere-in a rawn lantir thei a, chu chuan hla tak-a inthlunzawmna a siam thei a ni.
High-frequency electromagnetic wave, hla -distance transmission theihna nei radio frequency (RF) kan ti a.
RF technology hi wireless communication-ah hman a ni nasa hle a; cable television system-ah chuan RF transmission hman a ni.
Coaxial cable: Conductor pahnih (inner conductor/outer conductor) te hi ground nena khaikhin chuan asymmetrical an nih avangin, inner conductor pakhat chu cylindrical outer conductor dang axis-ah a awm avangin "coaxial cable" an ti a ni.
Coaxial cables ziarang pakhat chu electromagnetic field hi a bul berah chuan pawn lam conductor chhungah a inkhung a, frequency sang zawka hman theih a ni.
Note: Coaxial cable pawn lam conductor chu conductor leh shielding layer (loop angin a thawk ve ve a, anti-interference functionality a pe bawk) a ni.
RF signal thawn chhuahna atana hman thin coaxial cable chu "RF coaxial cable" an ti a.
Antenna atanga signal dawn chu feeder line hmangin hmalam tawp lamah a kal a, hmalam atanga signal chhuak pawh feeder line hmangin receiving device hrang hrangah a thawn chhuak bawk.
Tunlai hian signal amplification system-a hman thin connection leh transmission feeder kan hmu fo thin a, chu chu first-line wireless signal tower (China Mobile, China Unicom, China Telecom, etc.), tunnel, leh basement te hi a ni.