The Design of ultra-wide band Dual-Ridged Wave-guide-Coaxial High Power Converter

In order to meet the application of broadband system, this paper proposes an ultra-wide band waveguide coaxial high power converter. Compared with the rectangular waveguide, the ridge waveguide has wider single-mode operating bandwidth and lower impedance characteristics. The waveguide port structure is double-ridge waveguide. The focus of the structure design is the impedance matching of the waveguide and the coaxial conversion part. The operation frequency band is 6.5-18GHz. The VSWR measured results are less than 1.3 and insertion loss are less than 0.25dB.