Industrial Technology Research Institute

Min Hung Shen

Wen-Wei Yang

Ssu-Pin Ma

Shuw Guann Lin

Chen-Chung Kuo

A wireless LAN RF module uses parasitic element compensation devices in an antenna select circuit to improve port isolation. In addition, various combinations of RC filter networks and spurious radiation attenuators are incorporated into the Quad Demod/Mod and Synthesizer ;/circuits to provide suppression of EMI susceptibility and radiation throughout the RF module.

Wireless transmitter/receiver utilizing DSSS technology

A wireless LAN RF module uses a low power transistor switchable voltage divider circuit to control the bias input of a GaAs MESFET output power amplifier. This bias control circuit provides stable, high speed on-off switching of the power amplifier stage by applying low power bias voltages to the MESFET gate input, rather than by interrupting the high power MESFET drain to Vdd circuit.

Growing community of inventors

Hsinchu, Taiwan

Min Hung Shen