用于无线助听器设备的低功耗200mhz接收器

2002 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.02CH37302) Pub Date : 2002-06-13 DOI:10.3929/ETHZ-A-004319590

A. Deiss, Qiuting Huang

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引用次数: 12

摘要

采用0.8 /spl mu/m BiCMOS技术实现了一种工作在174-223 MHz范围内的无线助听器系统的低功耗接收器。该芯片由LNA、rf混频器、变增益中频放大器和解调组成，其中解调由数字移相器和I/Q中频混频器、5阶贝塞尔滤波器和直流放大器组成。仅667 /spl mu/A(包括偏置)用于接收336kbit /s的8位PSK信号。

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A low power 200 MHz receiver for wireless hearing aid devices

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.

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来源期刊

2002 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.02CH37302)

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