Self-cancellation full-duplex steerable phased array

Abstract

This paper presents a novel concept of beam-steerable full-duplex phased array. The proposed concept is a full phased array, which can achieve over 60dB of self-interference (SI) suppression at receiver front-end between transmit and receive ports over a large scan angle. This method enables possible use of single-stage receiver cancellation in full-duplex transmission scheme to achieve over 100dB of transmit-receive port isolation. The proposed full-duplex concept is made possible by using a metasurface to transform aperture field distribution of a planar phased array operating with high degrees of linearly progressive phase shift.