Self-Interference Cancellation of Partitioning Simultaneous Transmit and Receive Phased Array

The Aperture-Level Simultaneous Transmit and Receive(ALSTAR) architecture requires high isolation between the adjacent transmitting and receiving sub-arrays. For effective operation, this paper presents a selfinterference cancellation(SIC) algorithm using genetic algorithms(GAs) without a significant reduction in performance of antennas array in propagation domain. The proposed cancellation technique provided dB improvement in the sub-array isolation over a 100MHz bandwidth centered at 10GHz for a 5×10 ALSTAR array.