Title :
An 8 Mbps data rate transmission by inductive link dedicated to implantable devices
Author :
Lu, Zhijun ; Sawan, Mohamad
Author_Institution :
Electr. Eng. Dept., Ecole Polytech. de Montreal, Montreal, QC
Abstract :
This paper concerns the design and implementation of a high data rate transmission system over a wireless inductive link. This system, dedicated to medical implantable devices, includes offset quadrature phase shift keying (OQPSK) modulator and demodulator. Both modulator modules feature a reduced complexity, low power, area efficient topologies and allow a high data rate transmission. The demodulator is an improved version from our previous QPSK design, which is based on a modified COSTAS loop. The post layout simulation of the implemented differential topology circuits using a 0.18 mum CMOS technology achieves a data transmission rate of 8 Mbps with 13.56 MHz carrier frequency. The power consumptions of the implemented circuits are 16 muW and 680 muW for the modulator and demodulator respectively with a supply voltage of 1.8 V.
Keywords :
CMOS integrated circuits; data communication; demodulation; prosthetics; quadrature phase shift keying; radio links; radiofrequency integrated circuits; OQPSK; bit rate 8 Mbit/s; data rate transmission; demodulator; differential topology circuits; frequency 13.56 MHz; implantable devices; modulator modules feature; offset quadrature phase shift keying; power 16 muW; power 680 muW; reduced complexity; size 0.18 mum; wireless inductive link; CMOS technology; Circuit simulation; Circuit topology; Data communication; Demodulation; Energy consumption; Frequency; Phase modulation; Quadrature phase shift keying; Voltage;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4542103
