用于0.18 μm CMOS胶囊内窥镜系统的400 mhz超再生数字校准接收机

2008 IEEE International Symposium on VLSI Design, Automation and Test (VLSI-DAT) Pub Date : 2008-04-23 DOI:10.1109/VDAT.2008.4542408

Ching-Jen Tung, Yao-Hong Liu, Hui-Hsien Liu, Tsung-Hsien Lin

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引用次数: 18

摘要

本文报道了一种用于胶囊内窥镜系统的带有数控振荡器的低功耗超再生接收机。在这项工作中，提出了一个开环频率校准回路，将振荡器的中心频率调整到所需的频带。RX工作在402-405 MHz MICS频段，设计用于接收开关键控调制信号。该芯片采用台积电0.18 μ m CMOS工艺制造。RX启动时间仅为14.8毫秒，最大数据速率为1 Mbps。SR-RX从1.5 v电源电压消耗5.5 mW。

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A 400-MHz super-regenerative receiver with digital calibration for capsule endoscope systems in 0.18-μm CMOS

A low-power super-regenerative receiver (SR-RX) with a digitally-controlled oscillator for the capsule endoscope system is reported in this paper. In this work, an open-loop frequency calibration loop is proposed to adjust the oscillator center frequency to the desired frequency band. The RX operates in the 402-405 MHz MICS band, and is designed to receive on-off keying modulation signal. This chip was fabricated in the TSMC 0.18-mum CMOS process. The RX start-up time is only 14.8 mus and is capable of a maximum data rate of 1 Mbps. The SR-RX consumes 5.5 mW from a 1.5-V supply voltage.

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2008 IEEE International Symposium on VLSI Design, Automation and Test (VLSI-DAT)

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