Title :
A power and efficiency measurement technique for active patch antennas
Author :
Elkhazmi, Elmahdi A. ; McEwan, Neil J. ; Ali, Nazar T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
fDate :
5/1/2000 12:00:00 AM
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
Keywords :
UHF antennas; UHF measurement; active antennas; antenna testing; microstrip antennas; microwave measurement; power measurement; active patch antennas; calibration factor; efficiency measurement technique; power input; power measurement technique; radiating element; radiation efficiency; sensing patch; total radiated power; Antenna measurements; Equations; Gain measurement; Measurement techniques; Microstrip antennas; Patch antennas; Power amplifiers; Power measurement; Receiving antennas; Reflection;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
