Title :
A high data rate QPSK demodulator for inductively powered electronics implants
Author :
Deng, Shihong ; Hu, Yamu ; Sawan, Mohamad
Author_Institution :
Polystim Neurotechnol. Lab., Ecole Polytechnique de Montreal, Que.
Abstract :
A high data transfer rate quadrature phase shift keying (QPSK) demodulator is proposed for wireless implantable electronic medical devices. The QPSK demodulator is an improved version from our previous binary phase shift keying (BPSK) demodulator, which is based on a modified Costas loop. Simulated QPSK model under Matlab Simulink obtained a data transmission rate of 8 Mbps with 13.56 MHz carrier frequency. Also, implemented differential topology of the proposed circuit using a 0.18mum CMOS technology achieves a data transmission rate up to 4Mbps with the same carrier frequency. The simulated power dissipation of the schematic is 0.75mW under 1.8V power supply
Keywords :
CMOS analogue integrated circuits; biomedical electronics; demodulators; phase shift keying; prosthetics; 0.18 micron; 0.75 mW; 1.8 V; 13.56 MHz; 8 Mbit/s; CMOS technology; Matlab Simulink; QPSK demodulator; differential topology; inductively powered electronics implants; quadrature phase shift keying; Binary phase shift keying; CMOS technology; Circuit simulation; Data communication; Demodulation; Frequency; Implants; Medical simulation; Quadrature phase shift keying; Semiconductor device modeling;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693150
