Digital channelizer with predistorter, high-power amplifier, and beamforming

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United States of America Patent

PATENT NO 11785561
SERIAL NO

17361962

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Abstract

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A satellite communications system is disclosed, the system comprising a ground controller, a decode-and-forward (DF) satellite transponder, and a digital high-power amplifier (HPA). The DF is further comprised of a transponder front end including a digital channelizer and a predistorter. The ground controller is configured to transmit multiple-access frequency-division-multiplexed signals to the DF, where the DF is configured to down-convert the signals received at the transponder front end. The digital channelizer is configured to convert the signals received into a single sample steam and feed the stream through the predistorter into the single digital HPA, wherein the HPA is configured to amplify each input sample of the stream in sample-by-sample fashion and generates a discrete output. The DF is further configured to convert the output of the digital HPA to a continuous time signal and up-convert the output with a main carrier frequency for down-link transmission to multiple-access ground users.

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Patent Owner(s)

  • BOARD OF TRUSTEES OF THE WICHITA STATE UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goswami, Madhuprana Wichita, US 1 0
Kwon, Hyuck M Wichita, US 14 131
Pham, Khanh Albuquerque, US 27 41
Rana, Vidhi Wichita, US 1 0

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