Simultaneous transmit and receive with digital phased arrays

A new architecture is proposed for achieving Simultaneous Transmit and Receive (STAR) with a digital phased array. We demonstrate how digital beamforming and cancellation enables adjacent transmitting and receiving sub-arrays to operate simultaneously in the same frequency band without a significant...

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Bibliographic Details
Published in2016 IEEE International Symposium on Phased Array Systems and Technology (PAST) pp. 1 - 6
Main Authors Doane, Jonathan P., Kolodziej, Kenneth E., Perry, Bradley T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2016
Subjects
Array signal processing
Couplings
Dynamic range
Phased arrays
Receiving antennas
Transmitters
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Summary:A new architecture is proposed for achieving Simultaneous Transmit and Receive (STAR) with a digital phased array. We demonstrate how digital beamforming and cancellation enables adjacent transmitting and receiving sub-arrays to operate simultaneously in the same frequency band without a significant reduction in performance. Our approach uses only digital signal processing techniques and does not require custom radiators or analog cancelling circuits that can increase front-end losses and add significant size, weight and cost to the array. Simulated results are presented for a 50-element array that achieves more than 160 dB of effective isolation between transmit and receive beams over a 100 MHz instantaneous band centered at 2.45 GHz.
DOI:10.1109/ARRAY.2016.7832606