Title :
A Fully Integrated Auto-Calibrated Super-Regenerative Receiver in 0.13-μm CMOS
Author :
Chen, Jia-Yi ; Flynn, Michael P. ; Hayes, John P.
Author_Institution :
Michigan Univ., Ann Arbor
Abstract :
Super-regeneration is re-examined for its simplicity and power efficiency for low-power, short-range communication. A fully integrated super-regenerative receiver in 0.13-mum CMOS is designed to operate in the 2.4 GHz ISM band. A frequency synthesizer scheme tunes the passband. Successive approximation register (SAR) logic driving a current digital-to-analog converter (DAC) calibrates the quench signal to enhance the selectivity of a Q-enhanced filter and the sensitivity of super-regeneration. A single-chip prototype receiver occupies less than 1 mm2, has a turn-on time of 83.6 mus, a channel spacing of 10 MHz, and a sensitivity of -90 dBm. A data rate of 500 kb/s is achieved with a power consumption of 2.8 mW, corresponding to energy consumption of 5.6 nJ per received bit.
Keywords :
CMOS integrated circuits; UHF integrated circuits; digital-analogue conversion; frequency synthesizers; logic circuits; radio receivers; CMOS; Q-enhanced filter; digital-to-analog converter; frequency 2.4 GHz; frequency synthesizer; power efficiency; quench signal; successive approximation register logic; super-regenerative receiver; Band pass filters; CMOS logic circuits; Calibration; Digital filters; Digital-analog conversion; Energy consumption; Feedback; Frequency synthesizers; Oscillators; Passband; Digital-to-analog converters; frequency synthesizer; low power consumption; super-regenerative receiver;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2007.903092