Wistron Neweb Corporation

Chih-Chang Ko

Che-Ming Wang

Wen-Tsai Tsai

Tsan-Chou Wu

An optical low-noise block down-converter for a satellite television system is disclosed. The optical low-noise block down-converter includes a first down-conversion module coupled to a satellite antenna of the satellite television system for converting a vertically polarized signal received by the satellite antenna into a first intermediate frequency signal, a second down-conversion module coupled to the satellite antenna for converting a horizontally polarized signal received by the satellite antenna into a second intermediate frequency signal, and a third down-conversion module having a first input terminal coupled between the satellite antenna and a first down-converter of the first down-conversion module and a second input terminal coupled between the satellite antenna and a second down-converter of the second down-conversion module for draining out part of the vertically polarized signal and the horizontally polarized signal to combine and convert into a legacy electrical signal.

Low-noise block down-converter and satellite television system

An optical LNB capable of fast position-adjusting is employed in an LNBF. The optical LNB includes a down-converting device coupled to an OMT of the LNBF for down-converting a polarized signal for generating a first intermediate frequency signal, a branching device for branching the first intermediate frequency signal for generating a second and a third intermediate frequency signals, an electrical/optical converting device coupled to the branching device for converting the second intermediate frequency signal into an optical signal, and a power end for receiving power from a power supply and outputting the third intermediate frequency signal.

Optical LNB capable of fast position-adjusting

A filtering device includes an isolation substrate including a first plane and a second plane, a micro-strip line deposited on the first plane of the isolation substrate for transmitting signals, and a ground metal layer deposited on the second plane of the isolation substrate for providing grounding. A meander-shaped resonating cavity is formed in an area of the ground metal layer corresponding to an area of the micro-strip line, for generating a rejection band on the micro-strip line.

Growing community of inventors

Hsinchu, Taiwan

Chih-Chang Ko