Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/54322
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Type: Conference paper
Title: A passive harmonic reradiator tag for animal tracking
Author: Jamali, B.
Citation: Proceedings of the SPIE Smart Materials, Nano-, and Micro-Smart Systems. Proceedings of SPIE, 2008. Vol. 7268, pp.72681B-7
Publisher: SPIE
Publisher Place: CD
Issue Date: 2008
ISSN: 0277-786X
Conference Name: SPIE Smart Materials, Nano-, and Micro-Smart Systems (2008 : Melbourne Australia)
Statement of
Responsibility: 
Behnam Jamali
Abstract: Low power sensor nodes distributed over a large geographical area provide an economical way to collect environmental information. The sensors can utilize backscatter signals to communicate with a central node without significant power consumption. Each sensor can modulate its reflected backscatter signal by switching a load on the sensor antenna. This allows design of low power sensor nodes with longer lasting battery life. The nodes can be built to reradiate a harmonic of the received signal. This helps to avoid interference at the central node from reflection from unwanted objects. A passive harmonic reradiator is designed in this project to receive a 915 MHz electromagnetic wave and reradiate at 1.83 GHz. The design consists of receiver antenna, transmitter antenna, a Schottky diode, and matching network. Simulation and measurement results are provided. The results show promising characteristics for the use of the device to track animals in wild life.
Description: ©2008 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
DOI: 10.1117/12.810699
Appears in Collections:Aurora harvest
Electrical and Electronic Engineering publications

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