Low power wideband receiver with RF Self-Interference Cancellation for Full-Duplex and FDD wireless Diversity

Saw-Less Frequency Division Duplexing and Full-Duplex transceivers require very high receiver linearity. Self-Interference Cancellation can relax the specification but results in very high power. We propose a low-power direct-conversion single-ended receiver with passive SIC. A 28 nm CMOS prototype achieves an effective IIP3 > 25 dBm for both IB and OOB SI with only 20 dB cancellation and 25 dB isolation. Power consumption is 25mW, active area is 0.5 mm
²
.