DocumentCode :
2940431
Title :
An energy-efficient super-regenerative ASK receiver with a ΔΣ-based pulse-width demodulator
Author :
Hsiao, Po-Yun ; Liu, Yao-Hong ; Lin, Tsung-Hsien
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fYear :
2011
fDate :
14-16 Nov. 2011
Firstpage :
369
Lastpage :
372
Abstract :
An energy-efficient ASK receiver (RX) designed for bio-medical application is presented. The RX is based on the super-regenerative architecture and incorporates a fast frequency calibration and a ΔΣ-based pulse-width demodulator (ΔΣ-based PWD) to enhance the pulse-width resolution of the demodulator. This RX is designed to operate at the 400-MHz band. The proposed fast frequency calibration based on the SAR algorithm can accomplish the frequency calibration in 12 reference cycles. The proposed ΔΣ-based PWD can be viewed as a pulse-width domain ΔΣ modulator which improves the performance of the demodulator. Realized in a 0.18-μm CMOS process, this RX draws 1.37 mA from a 1-V supply. With a 1-Mbps data rate, the RX achieves an energy efficiency of 1.37 nJ/bit and -75 dBm sensitivity.
Keywords :
CMOS integrated circuits; UHF integrated circuits; amplitude shift keying; biomedical electronics; calibration; delta-sigma modulation; prosthetics; pulse width modulation; radio receivers; ΔΣ-based pulse-width demodulator; CMOS process; SAR algorithm; bit rate 1 Mbit/s; current 1.37 mA; energy-efficient super-regenerative ASK receiver; fast frequency calibration; frequency 400 MHz; pulse-width domain ΔΣ modulator; size 0.18 mum; voltage 1 V; Amplitude shift keying; Calibration; Energy efficiency; Receivers; System-on-a-chip; Time frequency analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid State Circuits Conference (A-SSCC), 2011 IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4577-1784-0
Type :
conf
DOI :
10.1109/ASSCC.2011.6123592
Filename :
6123592
Link To Document :
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