Compact Wideband Power Divider for Shared Aperture Phased Array Applications

This paper presents the design and development of a wideband power divider utilising multistage quarter wave transformers. The power divider has been designed and realised over a frequency bandwidth of 2-6GHz using Rogers RT Duroid 5880, 10 mil Substrate. Simulation performed using CST Microwave Studio and measured results ensures good performance of the circuit. Both the simulated and the measured results are presented. The circuit gives low insertion loss, ∼1.5dB within a compact size of 80mm x 20mm. The return loss of all the ports and the isolation between the output ports are better than -15 dB across the band 2GHz to 6 GHz.