NDLI: Microstrip patch with adaptive conductivity

Content Provider	IEEE Xplore Digital Library
Author	Flemish, J. Haupt, R.L.
Copyright Year	2007
Description	Author affiliation: Pennsylvania State Univ., State College (Flemish, J.; Haupt, R.L.)
Abstract	We are investigating techniques that electrically change the conductivity of microstrip patch antennas. Altering the conductivity of certain areas of a patch antenna can be useful for controlling the weighting of elements in an array or for tuning the antenna to a desirable frequency. Materials that have adjustable conductivity include conductive electoactive polymers and silicon. Conductive electoactive polymers have a conductivity that is proportional to an applied electric potential. Polypyrroles and polyanilines are examples that exhibit changes in conductivity between 10"7 and 103 S/cm. Conducting polymeric materials have controllable conductivity at microwave frequencies. Applying a small dc potential across a poly(aniline)-silver-polymer electrolyte composite quickly changes its conductivity. These materials have been incorporated into a Salisbury screen to dynamically alter the radar cross section of large surfaces. In this paper, we report on modeling and experimental results aimed at creating a reconfigurable patch antenna partly made with high-purity silicon which has a conductivity that can be varied over a wide range using infrared illumination.
Starting Page	5187
Ending Page	5190
File Size	164712
Page Count	4
File Format	PDF
ISBN	9781424408771
DOI	10.1109/APS.2007.4396715
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductivity Patch antennas Conducting materials Polymers Silicon Microstrip antennas Weight control Antenna arrays Microstrip antenna arrays Tuning
Content Type	Text
Resource Type	Article

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