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Digitally beamformed multibeam phased array antennas for future communication satellites
Conference proceeding

Digitally beamformed multibeam phased array antennas for future communication satellites

A.S Daryoush and IEEE
2008 IEEE Radio and Wireless Symposium, pp 831-834
Jan 2008

Abstract

Analog-digital conversion Antenna arrays Array signal processing Artificial satellites beam scanning communication satellites ILPLL multibeam phased array antenna optical ADC optical data network Phase control Phased arrays Radio frequency RF down conversion Satellite antennas Timing UHF antennas
Future generation of communication satellites are based on multi-beam phased array antennas, where beamforming and scanning are all fully implemented in digital domain as opposed to the commonly considered analog domains. The challenges of realizing a digitally beamformed multi-beam phased array antennas are many when communications are intended for applications beyond Q-band communication satellites, where RF down-conversion, phase control and timing synchronization, analog-to-digital conversion, and ultra high-speed data links are the important functions before the digital signal processing function could be implemented. The down-conversion and phase shifting could be combined using ILPLL systems that are implemented in both electrical and optical domains. Design of a novel all-optical ADC using spectral technique is presented, where sampling speeds as high as 50 GS/s with a minimum 6 bits of resolution is attainable with maximum power consumption of 4W.

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Web of Science research areas
Engineering, Electrical & Electronic
Telecommunications
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