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Abstract ▼ AI-Helper

In this paper, we design, fabricate and test a 35㎓ waveguide monopulse comparator for use in a tracking radar. The proposed comparator is consisted of four 180° E-plane ring hybrid couplers placed on a single plane. The comparator has four input ports mating with a monopulse feed horn and three outp...

In this paper, we design, fabricate and test a 35㎓ waveguide monopulse comparator for use in a tracking radar. The proposed comparator is consisted of four 180° E-plane ring hybrid couplers placed on a single plane. The comparator has four input ports mating with a monopulse feed horn and three output ports corresponding to the sum, azimuth and elevation difference channels. Waveguide sections and bends are utilized in connecting input and output waveguides to the comparator. The whole structure is fabricated in three pieces using the widely-used split-block waveguide machining techniques. Measurements of the fabricated comparator show reflection coefficient less than -20㏈, amplitude balance better than ±0.6㏈, phase balance better than ±5° at all channels, which are in good agreement with simulations.

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