Title :
A high data transfer rate frequency shift keying demodulator chip for the wireless biomedical implants
Author :
Ghovanloo, Maysam ; Najafi, Khalil
Author_Institution :
Center for Wireless Integrated Microsystems, Michigan Univ., Ann Arbor, MI, USA
Abstract :
This paper describes a high-rate frequency shift keying (FSK) data transfer protocol and demodulator circuit for wireless operated biomedical implants in need of data transfer rates above 1 Mbit/sec. The demodulator circuit receives the serial data bit stream from an FSK carrier signal in the 2∼20 MHz range, which is used to power the implant through inductive coupling. The circuitry has been designed and fabricated in the University of Michigan´s single metal, dual-poly 3 μm CMOS process and has been tested fully functional.
Keywords :
CMOS integrated circuits; biomedical communication; biomedical electronics; coupled circuits; demodulators; frequency shift keying; integrated circuit design; prosthetics; radio equipment; 1 Mbit/s; 2 to 20 MHz; 3 micron; CMOS; FSK carrier signal; FSK data transfer protocol; frequency shift keying demodulator chip; high data transfer rate FSK demodulator; implant power; inductive coupling; serial data bit stream; wireless biomedical implants; Amplitude modulation; Amplitude shift keying; Circuit testing; Coupling circuits; Demodulation; Digital modulation; Frequency domain analysis; Frequency shift keying; Implants; Wireless application protocol;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187066
