A new six-way broadband spatial power combiner/divider based on conical cavity

This article proposes two broadband six-way radial and conical combiner/divider at 7-16 GHz frequency range. Two structures are introduced and designed based on physical limitation of structure and best reflection coefficient. In radial combiner/divider, seven identical connectors in shape and size as central probe and the peripheral probes on the opposite sides of the radial waveguide are used and cylindrical parts are employed and added to end of probes to enhance bandwidth of combiner/divider. In second design, a six way conical cavity SPC/D is designed. Input power from N-type connector is passed through a transition which is used to increase inner and outer radius of input coax line and peripheral connectors receive equal portion of input power. A combination of circuit model and full electromagnetic wave methods is used to simplify the design procedure by increasing the role of the circuit model and, in contrast, reducing the amount of full wave optimization. The presented structures are compact and easy to fabricate. Keeping its return loss greater than 10 dB, the radial combiner and coaxial combiner operate with 78% bandwidth from 7 to 16 GHz and 100% bandwidth from 7 to 20 GHz, respectively.