Title :
A low power 200 MHz receiver for wireless hearing aid devices
Author :
Deiss, A. ; Qiuting Huang
Author_Institution :
Integrated Syst. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
A low power receiver for a wireless hearing aid system working in the 174-223 MHz range has been implemented in a 0.8 /spl mu/m BiCMOS technology. The chip comprises LNA, RF-mixer, variable-gain IF-amplifier, and demodulator, which consists of digital phase-shifter and I/Q IF-mixers, 5th order Bessel filters, and DC-amplifiers. Merely 667 /spl mu/A including biasing is consumed for the reception of an 8-ary PSK signal with 336 kbit/s.
Keywords :
BiCMOS integrated circuits; DC amplifiers; application specific integrated circuits; biomedical electronics; demodulators; hearing aids; intermediate-frequency amplifiers; low-power electronics; mixers (circuits); phase shift keying; phase shifters; 0.8 micron; 174 to 223 MHz; 200 MHz; 336 kbit/s; 667 muA; 8-ary PSK signal; Bessel filters; BiCMOS technology; DC-amplifiers; I/Q IF mixers; LNA; RF-mixer; demodulator; digital phase-shifter; low power receiver; variable-gain IF-amplifier; wireless hearing aid devices; Auditory system; Bit rate; Demodulation; Hearing aids; Impedance; Phase locked loops; Phase shift keying; Receiving antennas; Space technology; Transmitting antennas;
Conference_Titel :
VLSI Circuits Digest of Technical Papers, 2002. Symposium on
Conference_Location :
Honolulu, HI, USA
Print_ISBN :
0-7803-7310-3
DOI :
10.1109/VLSIC.2002.1015078
