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This paper proposes a compact E-plane five-port waveguide power combining and splitting structure in the V-band. The symmetrical five-port structure guarantees excellent amplitude and phase consistency between the input/output ports. Two isolation ports guarantee high isolation between the input/output ports. Meanwhile, the E-plane waveguide structure is more compact than H-plane structure. A two-way power combing structure working from 59 GHz to 64 GHz is designed, fabricated and measured for validating our structure. The measured results show that the phase and amplitude differences between the input ports are smaller than ±1.0 degree and ±0.1 dB, isolation between the input ports higher than 18 dB, insertion loss and return loss lower than 0.2 dB and better than 17 dB, respectively.

E-PLANE FIVE-PORT TWO-WAY WAVEGUIDE POWER DIVIDER/COMBINER WITH HIGH AMPLITUDE AND PHASE CONSISTENCY