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Open AccessArticle

A PVT-Robust Super-Regenerative Receiver with Background Frequency Calibration and Concurrent Quenching Waveform

1
School of Physics and Information Engineering, Fuzhou University, Fuzhou 350002, China
2
Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS B3H 4R2, Canada
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(10), 1119; https://doi.org/10.3390/electronics8101119
Received: 26 August 2019 / Revised: 26 September 2019 / Accepted: 30 September 2019 / Published: 4 October 2019
(This article belongs to the Special Issue Nanoscale CMOS Technologies)
A process-voltage-temperature (PVT)-robust, low power, low noise, and high sensitivity, super-regenerative (SR) receiver is proposed in this paper. To enable high sensitivity and robust-PVT operation, a fast locking phase-locked-loop (PLL) with initial random phase error reduction is proposed to continuously adjust the center frequency deviations of the SR oscillator (SRO) without interrupting the input data stream. Additionally, a concurrent quenching waveform (CQW) technique is devised to improve the SRO sensitivity and its noise performance. The proposed SRO architecture is controlled by two separate biasing branches to extend the sensitivity accumulation (SA) phase and reduce its noise during the SR phase, compared to the conventional optimal quenching waveform (OQW). The proposed SR receiver is implemented at 2.46 GHz center frequency in 180 nm SMIC CMOS technology and achieves better sensitivity, power consumption, noise performance, and PVT immunity compared with existent SR receiver architectures. View Full-Text
Keywords: concurrent quenching waveform (CQW); phase-locked loop (PLL); super regenerative oscillator (SRO); sensitivity concurrent quenching waveform (CQW); phase-locked loop (PLL); super regenerative oscillator (SRO); sensitivity
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MDPI and ACS Style

Yin, Y.; Fu, X.; El-Sankary, K. A PVT-Robust Super-Regenerative Receiver with Background Frequency Calibration and Concurrent Quenching Waveform. Electronics 2019, 8, 1119.

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