Investigations into a power-combining structure formed by trays of uniplanar quasi-Yagi antennas

Theoretical and experimental investigations are performed into a power comb iner formed by trays of uniplanar quasi-Yagi antennas. A single tray consis ting of two back-to-back antennas and then five-tray and seven-tray structu res operating at Ku-band are developed and tested Using pyramidal horn ante nnas to distribute and combine microwave power, experiments are performed w ith respect to return loss, insertion loss, and field uniformity across the trays. (C) 2000 John Wiley & Sons, Inc.