A 0.11-mW 2.4-GHz Receiver Employing a Q-Boosted Impedance Transformer and Regenerative Amplifier Achieving −101-dBm Sensitivity and −28-dB SIR

This letter presents a 2.4-GHz OOK receiver that employs a $Q$ -boosted impedance transformer and a regenerative amplifiers (RA) to provide high gain and sharp filtering prior to demodulation. A differential envelope detector (ED) is also used to increase the conversion gain further to help nullify the noise contribution of the subsequent baseband stages. Fabricated in 65 nm, the receiver achieves a sensitivity of −101 dBm at a data rate of 5 Kb/s, all while consuming $112~\mu \text{W}$ . The sharp RF filtering helps enable a signal-to-interference ratio (SIR) of −28 dB.