TY - GEN
T1 - Pre-PA Delay-Line Based FIR Filter for Self-Interference Cancellation in Full Duplex Wireless Systems
AU - Ginzberg, Nimrod
AU - Regev, Dror
AU - Cohen, Emanuel
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - In this paper we propose a pre-PA self-interference (SIC) cancellation FIR filter architecture implemented in a quadrature balanced PAs (QBPA) transmitter (TX) for full duplex wireless applications. Pre-PA SIC filter allows for flexible and efficient equalization of the cancellation signal by reusing the TX path, thus eliminating the need to couple TX power and facilitating linearization operations on both the TX and SIC signals. The pre-PA SIC approach is validated in system-level simulation and demonstrated in measurement using 180nm CMOS QBPA transmitter and a single-tap FIR filter SIC stage. The single-tap filter achieves 37 dB and 42 dB of total TX-RX isolation over BWs of 20 MHz and 10 MHz, respectively, at 14 dBm TX power level.
AB - In this paper we propose a pre-PA self-interference (SIC) cancellation FIR filter architecture implemented in a quadrature balanced PAs (QBPA) transmitter (TX) for full duplex wireless applications. Pre-PA SIC filter allows for flexible and efficient equalization of the cancellation signal by reusing the TX path, thus eliminating the need to couple TX power and facilitating linearization operations on both the TX and SIC signals. The pre-PA SIC approach is validated in system-level simulation and demonstrated in measurement using 180nm CMOS QBPA transmitter and a single-tap FIR filter SIC stage. The single-tap filter achieves 37 dB and 42 dB of total TX-RX isolation over BWs of 20 MHz and 10 MHz, respectively, at 14 dBm TX power level.
KW - Full-Duplex
KW - Quadrature Balanced
KW - self-interference cancellation
KW - simultaneous transmit-receive
UR - http://www.scopus.com/inward/record.url?scp=85078903844&partnerID=8YFLogxK
U2 - 10.1109/COMCAS44984.2019.8958454
DO - 10.1109/COMCAS44984.2019.8958454
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AN - SCOPUS:85078903844
T3 - 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
BT - 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
Y2 - 4 November 2019 through 6 November 2019
ER -