A Wideband Full-Duplex Receiver With Multi-Domain Self-Interference Cancellation

Abstract

Nanosecond-scale ON-chip delay is critical for inte- grated wideband self-interference cancellation (SIC) in full duplex (FD) system, especially for radio frequency (RF) domain SIC. In this article, we presented an FD receiver (RX) with multi- domain SICs using capacitor stacking (CS)-based delay cell in the RF canceller which breaks the trade-off among delay, loss, form-factor, and noise. In addition, a delay bandwidth (BW) expansion method is proposed to break the limitation of delay BW produc