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Title of Journal: Analog Integr Circ Sig Process

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Abbravation: Analog Integrated Circuits and Signal Processing

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Kluwer Academic Publishers-Plenum Publishers

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DOI

10.1016/0377-0273(87)90010-2

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ISSN

1573-1979

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A 24 GHz low power wireless transceiver analog fr

Authors: Baoyong Chi Jinke Yao Shuguang Han Xiang Xie Guolin Li Zhihua Wang
Publish Date: 2007/05/25
Volume: 51, Issue: 2, Pages: 59-71
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Abstract

This work presents the design and implementation of a 24 GHz low power wireless transceiver analog frontend for the endoscopy capsule system in 025 μm CMOS The prototype integrates a lowIF receiver analog frontend low noise amplifier doublebalanced downconverter bandpassfiltered AGC loop and ASK demodulator and a directconversion transmitter analog frontend 20 MHz IF PLL with welldefined amplitude control circuit ASK modulator upconverter and output buffer on a single chip together with one integrated RF oscillator and two LO buffers Tradeoff has been made over the design boundaries of the different building blocks to optimize the overall system performance All building blocks feature the circuit topologies that enable comfortable operation at low power consumption As a result the IC works at a 25 V power supply while only consuming 15 mW in receiver RX mode and 14 mW in transmitter TX mode To build a complete transceiver for the endoscopy capsule system only an antenna a duplexer and a digital controller are needed besides the presented analog frontend chip

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