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Proceedings Paper

An ultra-wideband transceiver for biotelemetry systems
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Paper Abstract

This paper introduces an Ultra-Wideband (UWB) transceiver for in-vivo biotelemetry applications, especially for wireless endoscope. A system modeling, simulation and design trade-off analysis for an UWB impulse radio transceiver is presented that incorporates the human body attenuation effect, the IEEE 802.14a indoor channel model, and channel noise to determine an optimum architecture for the given applications. Based on the system simulation using Matlab, the severe effect from the human body attenuation has been identified and a non-coherent Transmit Reference (TR) Transceiver architecture with differential Binary Phase Shift Keying (DBPSK) modulation was selected as the best option for a communication link in biotelemetry applications. The transceiver consists of an all-digital transmitter with H-bridge output stage type of Pulse Generator (PG), wideband inductorless resistive shunt feedback Low Noise Amplifier (LNA) with thermal noise canceling, Gilbert mixer, Integrator, decision detector and Variable Delay Controller (VDC). The performance characteristics of the PG, LNA and mixer are presented by the circuit simulation results using 0.18μm digital CMOS technology.

Paper Details

Date Published: 21 December 2007
PDF: 9 pages
Proc. SPIE 6798, Microelectronics: Design, Technology, and Packaging III, 67980A (21 December 2007); doi: 10.1117/12.758996
Show Author Affiliations
Chul Kim, Univ. of New South Wales (Australia)
Torsten Lehmann, Univ. of New South Wales (Australia)
Saeid Nooshabadi, Gwangju Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 6798:
Microelectronics: Design, Technology, and Packaging III
Alex J. Hariz; Vijay K. Varadan, Editor(s)

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