Design of a zero crossing BFSK demodulator for a wireless sensor

Author

Neifar, Amel ; Trabelsi, Hatem ; Bouzid, Ghazi ; Masmoudi, Mohamed

Author_Institution

Nat. Eng. Sch. of Sfax, Sfax, Tunisia

fYear

2012

fDate

16-18 May 2012

Firstpage

1

Lastpage

5

Abstract

In this paper, a transistor-level simulation result of a Zero crossing BFSK demodulator is presented. The detector will be integrated into a frequency-hopped spread spectrum receiver operating in the 863-870 MHz ISM band, using the zigbee protocol (IEEE 802.15.4). This end to demodulate a received bit sequence with a bit rate equal to 20 kbps using 0.35 μm CMOS technology and a 3 V power supply. The proposed demodulator dedicated to an application of low power and low cost can maintain good performance under process variation. The BER results show that the proposed demodulator needs only 10.9 dB input signal_to_noise ratio to achieve a BER of 10-3 as specified in zigbee standard.

Keywords

CMOS integrated circuits; UHF integrated circuits; Zigbee; demodulators; detector circuits; frequency hop communication; frequency shift keying; protocols; spread spectrum communication; wireless sensor networks; CMOS technology; IEEE 802.15.4; ISM band; Zigbee protocol; bit rate 20 kbit/s; frequency 863 MHz to 870 MHz; frequency hopped spread spectrum receiver; size 0.35 mum; voltage 3 V; wireless sensor; zero crossing BFSK demodulator; Demodulation; Detectors; Digital filters; Frequency shift keying; Gain; Limiting; Receivers; 0.35μm CMOS technology; BFSK demodulation; Limiting amplifier; RF receivers; Wireless sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Design & Technology of Integrated Systems in Nanoscale Era (DTIS), 2012 7th International Conference on

Conference_Location

Gammarth

Print_ISBN

978-1-4673-1926-3

Type

conf

DOI

10.1109/DTIS.2012.6232953

Filename

6232953