Based on the power synthesis theory of coaxial transmission lines and waveguide coaxial transformation,a 6-path di-rectional combiner is developed.The input end adopts an N-type connector and the output end adopts a double ridge waveguide form.The model is optimized and simulated using high-frequency electromagnetic field simulation software CST.The processed ra-dial synthesizer has undergone small signal testing and high-power testing.The test results show that from 4 GHz to 8 GHz frequen-cy band,the synthetic loss is less than 0.36 dB,the return loss is less than-10 dB,and the peak power tolerance is higher than 5 kW.This radial synthesizer has the characteristics of broadband,low insertion loss,high amplitude phase consistency and high power tolerance.It has broad engineering application value in the field of broadband high-power synthesis.
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