A GFSK demodulator for ultra-low power MICS band Receiver

Author

Fu, Meng ; Yang, Jiawei ; Tran, Nhan ; Bai, Shun ; Ng, David C. ; Halpern, Mark ; Skafidas, Efstratios ; Mareels, Iven

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia

fYear

2010

fDate

15-17 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

This paper presents an low power Gaussian frequency shift keying (GFSK) demodulator for Medical Implant Communications Service (MICS) band Receiver. The demodulator draws 500 uA from a 1 V power supply. The maximum data rate up to 400 Kbits/s can be achieved in 300 KHz bandwidth at carrier frequency of 1.35 MHz. A simulated signal-to-noise ratio (SNR) of 14 dB is obtained to achieve 0.1% bit error rate (BER) at a relative low 150 mV voltage swing. This demodulator is fabricated on 65 nm CMOS. A fifth-order gm-C filter is first time realized for pulse averaging. It replaces the LC low pass filter and dramatically saves the chip area. The demodulator occupies 0.12 mm² silicon area.

Keywords

CMOS integrated circuits; biomedical communication; demodulators; frequency shift keying; low-pass filters; radio receivers; CMOS; GFSK demodulator; Gaussian frequency shift keying; LC low pass filter; MICS band receiver; frequency 1.35 MHz; frequency 300 kHz; medical implant communications service; size 65 nm; voltage swing; Bandwidth; Computer architecture; Decision making; Demodulation; Detectors; Low pass filters; Signal to noise ratio; CMOS; GFSK demodulator; MICS band; gm-C filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband and Biomedical Communications (IB2Com), 2010 Fifth International Conference on

Conference_Location

Malaga

Print_ISBN

978-1-4244-6951-2

Electronic_ISBN

978-1-4244-6952-9

Type

conf

DOI

10.1109/IB2COM.2010.5723584

Filename

5723584