Field RF Power Extraction Circuits and Systems (2004)
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BibTeX
@TECHREPORT{Mandal04fieldrf,
author = {Soumyajit Mandal and Rahul Sarpeshkar and Soumyajit Mandal},
title = {Field RF Power Extraction Circuits and Systems},
institution = {},
year = {2004}
}
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Abstract
In this thesis, I describe efficient methods for extracting DC power from electromagnetic radiation. This will become an important necessity for a number of applications involving remotely powered devices, such as Radio Frequency Identification (RFID) tags and bionic implants. I first investigate the problem abstractly, allowing theoretical bounds on system performance to be derived. Next I devise circuit, antenna and impedance matching network design strategies to efficiently approach these theoretical bounds. Finally, I use these strategies to create an experimental power extraction system that collects RF power at low electromagnetic field strengths. This system enables a substantial increase in the operating range of remotely powered devices.
