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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 5, May 2000

Table of Contents for this issue

Complete paper in PDF format

A Power and Efficiency Measurement Technique for Active Patch Antennas

Elmahdi A. Elkhazmi, Neil J. McEwan and Nazar T. Ali

Page 868.

Abstract:

In this paper, the power input to the radiating element of an active microstrip patch antenna is measured using a small sensing patch, which is weakly coupled to a radiating edge. Combined with an estimate of patch radiation efficiency, this also yields a measurement of total radiated power. The method has advantages of convenience, insensitivity to room reflections,and a weakly frequency-dependent calibration factor.

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