Simultaneous transmit and receive system architecture with four stages of cancellation

Autor: Stephen J. Watt, John L. Volakis, Abe A. Akhiyat, Brian Dupaix, Elias A. Alwan, Waleed Khalil, Kevin L. Scherer
Rok vydání: 2015
Předmět:
Zdroj: 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
DOI: 10.1109/aps.2015.7304646
Popis: Simultaneous transmit and receive systems (STAR) are proposed to double the spectral efficiency and enhance spectrum utilization in the traditional microwave band. A major problem is high power self-interference (SI) due to the proximity of the transmit and receive antennas. In this paper, we propose to significantly improve system-level performance using a novel high isolation RF front-end based on collocated Tx/Rx antenna pair(s). Among our improvements, we propose a novel architecture for a STAR system incorporating four stages of self-interference cancellation across the propagation, analog, and digital domains. We aim to attain at least 120dB of total SI cancellation over a >100MHz bandwidth.
Databáze: OpenAIRE