RIA: Two-Terminal Monolithic Solid-State Devices for Milli- meter-Wave and Submillimeter-Wave Circuit Applications

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The proposed research concerns the fabrication of two-terminal millimeter-wave diode structures and incorporation of those devices into monolithic millimeter-wave circuits in the frequency ranges 40-60 GHz and 90-100 GHz. The focus of the research will concern primarily the circuit design aspects and will begin by measuring and characterizing a single gallium arsenide (GaAs) Schottky diode mounted in a 40-60 GHz finline test fixture. After de-embedding the measurements to a reference plane at the diode chip, an accurate circuit model will be developed to permit the design of an integrated Schottky diode phase modulator fabricated in a finline environment on GaAs. Characterization of the resulting circuit will allow appropriate matching structures to be designed and incorporated into the circuit. An experimental scaling of the design to 90-100 GHz will form the second half of the project; the 90-100 GHz design procedure will parallel the approach used in the 40-60 GHz band. This research will form a basis for more sophisticated two- and three-terminal integrated-circuit design at higher millimeter-wave and submillimeter- wave frequencies.