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Digital channelizer with predistorter, high-power amplifier, and beamforming
Kwon, Hyuck M. Goswami, Madhuprana Rana, Vidhi Pham, Khanh D.
Kwon, Hyuck M.
Goswami, Madhuprana
Rana, Vidhi
Pham, Khanh D.
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U.S. 20220007311 A1
Adobe PDF, 112.37 KB
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2022-01-06
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Kwon, H.M., Goswami, M., Rana, V., Pham, K.D., inventors; Wichita State University, assignee. Digital channelizer with predistorter, high-power amplifier, and beamforming. United States patent US 20220007311 A1. 2022, January 6.
Abstract
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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WSU inventor: Hyuck M. Kwon, Dept. of Electrical Engineering and Computer Science, College of Engineering
Application No: 17/361962 filed June 29, 2021. Patent No: US 20220007311 A1 granted January 6, 2022.
Application No: 17/361962 filed June 29, 2021. Patent No: US 20220007311 A1 granted January 6, 2022.
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United States Patent and Trademark Office
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Status: Pending