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Characterization of a wideband, low-Q, electrically small antenna

✍ Scribed by Craig A. Grimes; Gang Liu; Dale M. Grimes; Keat Ghee Ong

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
157 KB
Volume
27
Category
Article
ISSN
0895-2477

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✦ Synopsis

Theoretical and experimental investigations have been performed on the application of a uniplanar quasi-Yagi antenna as a receiving and transmitting antenna element of a spatial power combiner. A single tray consisting of two back-to-back antennas, and then five-and seven-tray configurations for operation in the Ku-band, have been developed. Using horn antennas to distribute and collect microwave power, the experiments have been performed in terms of return loss, insertion loss, and field uniformity across the trays to achieve optimal power-combining conditions. The results have shown that the investigated structures featured small insertion losses. Also, using ordinary horns, relatively high uniform excitation over a stack of trays has been achieved over a large frequency band. These overall results of the investigations indicate that the quasi-Yagi antenna is a suitable element to develop a broadband spatial power combiner.

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