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Waveguide-to-microstrip transition at G-band using elevated E-plane probe

Waveguide-to-microstrip transition at G-band using elevated E-plane probe

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A rectangular waveguide-to-microstrip transition operating at G-band is presented. The E-plane probe, used in the transition, is fabricated on semi-insulating gallium arsenide (SI-GaAs) and it is elevated on the substrate. This configuration reduces interaction with semiconductor material. The elevated probe is suitable for direct integration with monolithic microwave integrated circuits. Measured results show S11 better than −10dB between 150 and 200 GHz and S21=−4dB at centre band (180GHz) for two transitions in back-to-back configuration.

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