Wistron Neweb Corporation

Tsung-Hsing Tsai

Chen-Chia Huang

Hsiang-Chen Kuo

A communication system includes an STB (Set-Top Box), an LNB (Low Noise Block Down Converter), and a voltage converter. The voltage converter is coupled between the STB and the LNB. The voltage converter includes a DC (Direct Current) switch element, a voltage regulator, and a controller. The DC switch element is coupled between an input node and an output node. The voltage regulator is coupled between the input node and the output node. The controller detects an input voltage at the input node. If the input voltage is higher than or equal to a threshold voltage, the controller will open the DC switch element. If the input voltage is lower than the threshold voltage, the controller will close the DC switch element.

Communication system and voltage converter

A circuit board structure for a low noise block down-converter is disclosed. The circuit board structure is used for transmitting a first radio-frequency signal and a second radio-frequency signal across each other, and includes a first substrate and a second substrate. The first substrate includes a first wire for transmitting the first radio-frequency signal, a first grounded wire formed in parallel to a side of the first wire, and a second grounded wire formed in parallel to another side of the first wire. The second substrate is electrically connected to the first substrate, and includes a second wire for transmitting the second radio-frequency signal, a third wire formed on a side of the second wire and a fourth wire formed on another side of the second wire.

Growing community of inventors

Hsinchu, Taiwan

Tsung-Hsing Tsai