New Analog Predistortion Linearizer for Ku-band TWTA allowing 1GHz Instantaneous Wideband Satellite Operation

摘要

This paper proposes a new wideband predistortion linearizer for TWTA enabling to use broadband multi-carrier signals for the new Telecom satellite transmit sections. The linearizer has been embedded in a channel amplifier equipment and successfully tested with a wideband Ku-band TWTA. A state-of-the-art NPR performance was obtained over the entire 10.7-12.75GHz Ku-band with multi-carrier signals up to 1GHz instantaneous bandwidth.