Title :
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
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;
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
DOI :
10.1109/DTIS.2012.6232953
