Abstract

A novel power divider/combiner using microstrip probes array in the oversized coaxial waveguide is proposed in this paper. The simple electromagnetic modeling of this power dividing/combining structure has been developed. Analysis based on equivalent circuits gives the design formula for perfect power dividing/combining. A four-way waveguide power divider has been designed and fabricated. The measured results agree well with the simulated results. The measured 15-dB return loss bandwidth of this waveguide power divider is demonstrated to be 28.6% and its 0.5-dB insertion loss bandwidth 41.3%.

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