Novel Broadband Dual-Polarization Four-way Power Divider for Waveguide Array Antennas

In this paper, a broadband dual-circular-polarization four-way power divider based on a novel topology is presented. This design consists of a feeding waveguide, a power divider network, and a radiating horn. The simulation result for a Ka-band (25.9-32.2 GHz) four-way power divider is presented, demonstrating that the input port return loss is better than 20 dB, the input-output isolation is better than 20 dB, four-way equal amplitude and in-phase outputs can be achieved over a bandwidth of 6.3GHz.