Abstract
A novel groove guide mixer was proposed. The key features of this mixer are large dimension and good signal-to-noise performance. The shell of this mixer is made up of a novel waveguide, the groove guide. A planar logarithmically periodic antenna was installed in the guide. It received signals in the guide and transmitted them to the mixer diode. A compact multi-section coaxial filter was arranged to lead the intermediate frequency signal out of the shell. At the end of the mixer, a matched terminator is adopted to absorb millimeter wave signals. One model of this mixer was designed, fabricated and tested at 93.069GHz. It works well on millimeter wave band.
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