GWB104G Wideband LNB
Mafotokozedwe Akatundu
GWB104G ndi wideband LNB yokhala ndi zotuluka ziwiri za RF.Ndi 10.4GHz oscillator wamba, GWB104G imasintha 10.7GHz ~ 12.75GHz Ku siginecha kukhala 300MHz ~ 2350MHz zotuluka.
Low-noise block downconverter (LNB) ndi chipangizo cholandirira chomwe chimayikidwa pa mbale za satelayiti, chomwe chimasonkhanitsa mafunde a wailesi kuchokera m'mbale ndikuwatembenuza kukhala chizindikiro chomwe chimatumizidwa kudzera pa chingwe kupita kwa wolandira mkati mwa nyumbayo.LNB imatchedwanso low-noise block, low-noise converter (LNC), kapena ngakhale low-noise downconverter (LND).
LNB ndi kuphatikiza kwa amplifier otsika phokoso, chosakanizira pafupipafupi, oscillator wamba ndi amplifier yapakatikati (IF).Imagwira ngati kutsogolo kwa RF kutsogolo kwa wolandila satana, kulandira chizindikiro cha microwave kuchokera ku satelayiti yotengedwa ndi mbale, ndikuikulitsa, ndikuchepetsa kutsika kwa ma frequency mpaka kutsika kwapakati (IF).Kutsika uku kumapangitsa kuti chizindikirocho chinyamulidwe ku cholandila TV chamkati chamkati pogwiritsa ntchito chingwe chotsika mtengo cha coaxial;ngati chizindikirocho chikhalabe pa ma frequency ake a microwave chikadafunika mzere wokwera mtengo komanso wosatheka.
LNB nthawi zambiri imakhala kabokosi kakang'ono koyimitsidwa pa boom imodzi kapena zingapo zazifupi, kapena mikono yodyetsa, kutsogolo kwa chowonetsera mbale, pakuyang'ana kwake (ngakhale mbale zina zimakhala ndi LNB kumbuyo kapena kumbuyo kwa chowunikira).Chizindikiro cha microwave kuchokera m'mbale chimatengedwa ndi feedhorn pa LNB ndipo chimaperekedwa ku gawo la waveguide.Pini imodzi kapena zingapo zachitsulo, kapena ma probes, zimatuluka mumayendedwe olowera kumanja kwa olamulira ndikuchita ngati tinyanga, kudyetsa siginecha ku bolodi losindikizidwa mkati mwa bokosi lotetezedwa la LNB kuti lisinthidwe.Chizindikiro chochepa cha IF chimachokera ku socket pabokosi lomwe chingwe cha coaxial chimagwirizanitsa.
Zina:
•Madoko awiri a RF, 300MHz ~ 2350MHz iliyonse.
•Chithunzi chochepa chaphokoso.
•Kuyika kosavuta.
•Kugwiritsa ntchito mphamvu zochepa.
•Kutetezedwa kwanyengo kwapamwamba.
•Kuphimba kwathunthu kwa Ku-Band kwa Analogi ndi HD Digital reception.
