A quenching waveform with an optimal crossing point calibration for sensitivity optimization of SR receivers

This paper presents a new quenching waveform generation and calibration for sensitivity optimization of super-regenerative (SR) receivers. To achieve high sensitivity, calibration of the slope and step variations of the optimal quenching waveform (OQW) is needed. The proposed sensitivity optimization uses an optimal crossing point waveform calibration technique to achieve maximum sensitivity during the sensitivity accumulation (SA) region. The proposed OQW circuit and its calibration loops are implemented in 180nm CMOS technology and tested within an SR receiver with a center frequency of 2.4GHz.