Spatial power combining using one and two dimensional arrays of circularly polarized active antennas with single point feeds

摘要

In order to realize high power circularly polarized microwave and millimeter-wave radiating sources, spatial power combining of circularly polarized active antennas have been investigated. Circularly polarized active antennas with single point feeds were designed for this purpose, and were measured their circular polarization characteristics under their single active antenna operation. In mutual synchronization for both cases of radiative coupling and transmission-line coupling between two active antennas, the relation of synchronized frequency and output radiation power versus the interval between the active antennas was measured to obtain the synchronization characteristics. Spatial power combining experiment was carried out for one and two dimensional arrays of radiative coupling and for one dimensional arrays of transmission-line coupling. The experimental results show that spatial power-combining of low axial ratios and high combining efficiencies could be attained.