GWB104G Wideband LNB
Tlhaloso ea Sehlahisoa
GWB104G ke LNB e pharaletseng e nang le lihlahisoa tse peli tsa RF. Ka oscillator ea lehae ea 10.4GHz, GWB104G e fetolela matšoao a 10.7GHz ~ 12.75GHz Ku hore e be liphetho tsa 300MHz ~ 2350MHz.
Low-noise block downconverter (LNB) ke sesebelisoa se amohelang se kentsoeng holim'a lijana tsa sathelaete, se bokellang maqhubu a seea-le-moea ho tloha sejaneng ebe se a fetolela ho letšoao le rometsoeng ka mohala ho ea amohelang ka hare ho mohaho. LNB e boetse e bitsoa "low-lerata block", "low-lerata converter" (LNC), kapa le low-noise downconverter (LND).
LNB ke motsoako oa amplifier ea lerata le tlase, mixer frequency, oscillator ea lehae le amplifier ea mahareng (IF). E sebetsa e le pheletso e ka pele ea RF ea moamoheli oa sathelaete, e amohela lets'oao la microwave ho tsoa ho sathelaete e bokelletsoeng ke sejana, e e holisa, le ho theola boloko ba maqhubu ho ba boloko bo tlase ba maqhubu a mahareng (IF). Phokotso ena e tlase e lumella lets'oao hore le isoe ho moamoheli oa TV oa sathelaete ka tlung o sebelisa mohala o tlase oa coaxial; haeba lets'oao le ne le lula le le maemong a lona a mantlha a microwave le tla hloka mohala oa waveguide o theko e boima ebile o sa sebetse.
LNB hangata ke lebokose le lenyenyane le fanyehiloeng holim'a boom e le 'ngoe kapa ho feta tse khutšoane, kapa matsoho a fepa, ka pel'a sets'oants'o sa sejana, moo e shebileng teng (le hoja meralo e meng ea lijana e na le LNB holim'a kapa ka morao ho seipone). Letšoao la microwave le tsoang sejaneng le nkuoa ke lenaka la phepelo ho LNB 'me le fepeloa karolong ea waveguide. Pina e le 'ngoe kapa tse ngata tsa tšepe, kapa li-probes, li hlahella ka har'a waveguide ka li-angles tse nepahetseng ho axis ebe li sebetsa joalo ka li-antenna, li fepa lets'oao ho boto ea potoloho e hatisitsoeng ka har'a lebokose le sirelelitsoeng la LNB hore le sebetsanoe. Letšoao le tlase la IF la tlhahiso ea IF le hlaha ho tloha soketeng e lebokoseng leo mohala oa coaxial o hokahanang ho lona.
Likarolo tse ling:
•Likou tse peli tsa RF, e 'ngoe le e' ngoe ea 300MHz ~ 2350MHz.
•Sebopeho sa lerata le tlase.
•Ho kenya habonolo.
•Tšebeliso e tlase ea matla.
•Tšireletso ea boemo ba leholimo ea boleng bo holimo.
•Kakaretso e felletseng ea Ku-Band bakeng sa kamohelo ea Analog le HD Digital.
