Microstrip Amplitude-Weighted Wilkinson Power Dividers
ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY
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Unequal-split reactive power dividers were examined for use in forming amplitude tapers for microstrip array antennas. Circuits with power ratios of up to 5.0 between arms were constructed on Rexolite substrate, for operation at 4.0 GHz and 7.5 GHz. The 4.0 GHz circuits were very accurate in forming the correct amplitude ratio between outputs, and in maintaining phase balance between outputs. Of those circuits designed for 7.5 GHz, only those with split ratios less than 2.5 worked correctly. This report includes a review of the theory, measured results, and recommendations for improved power dividers. Keywords Microstrip antennas Microwave components Conformal antennas and Printed circuit antennas.
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