TY - GEN
T1 - A Distributed Cascode Power Amplifier with an Integrated Analog SIC Filter for Full-Duplex Wireless Operation in 65 nm CMOS
AU - Melamed, Itamar
AU - Ginzberg, Nimrod
AU - Malka, Omer
AU - Cohen, Emanuel
N1 - Publisher Copyright: © 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this work, we propose a fully integrated transmitter front-end based on a balanced distributed cascode power amplifier and a passive second-order reconfigurable reflective self-interference cancellation (SIC) filter for full-duplex wireless applications. The balanced topology provides inherent passive transmit-receive (TX-RX) isolation complemented by the passive SIC filter, which accounts for the signal, noise, and nonlinearity components of the direct TX-RX leakages and the reflections from a commercial Wi-Fi antenna. A front-end chip prototype fabricated in TSMC's 65 nm CMOS process operating between 5-6 GHz and occupying the area of 1.2 mm2achieves 19.5 dBm Psat with 31% peak PAE, 17 dBm OP1dB, and 8-10 dB RX noise figure, along with 40 dB of TX-RX isolation and -30 dB TX EVM at 10 dB power backoff using a 20 MHz Wi-Fi OFDM signal without DPD.
AB - In this work, we propose a fully integrated transmitter front-end based on a balanced distributed cascode power amplifier and a passive second-order reconfigurable reflective self-interference cancellation (SIC) filter for full-duplex wireless applications. The balanced topology provides inherent passive transmit-receive (TX-RX) isolation complemented by the passive SIC filter, which accounts for the signal, noise, and nonlinearity components of the direct TX-RX leakages and the reflections from a commercial Wi-Fi antenna. A front-end chip prototype fabricated in TSMC's 65 nm CMOS process operating between 5-6 GHz and occupying the area of 1.2 mm2achieves 19.5 dBm Psat with 31% peak PAE, 17 dBm OP1dB, and 8-10 dB RX noise figure, along with 40 dB of TX-RX isolation and -30 dB TX EVM at 10 dB power backoff using a 20 MHz Wi-Fi OFDM signal without DPD.
KW - Electrical-Balanced Duplexer (EBD)
KW - Full-duplex
KW - Power Amplifier
KW - self-interference cancellation (SIC)
UR - https://www.scopus.com/pages/publications/85166940076
U2 - 10.1109/RFIC54547.2023.10186122
DO - 10.1109/RFIC54547.2023.10186122
M3 - Conference contribution
T3 - Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
SP - 221
EP - 224
BT - 2023 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2023
A2 - Kitchen, Jennifer
A2 - Turner, Steven
T2 - 2023 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2023
Y2 - 11 June 2023 through 13 June 2023
ER -