Millimeter-Wave Monolithic Schottky Diode-Grid Phase Shifter

Millimeter-Wave Diode-Grid Phase Shifter

Lam, Wayne W. ; Rutledge, David B.

University:California Institute of Technology

Department:Engineering and Applied Science

关键词: Millimeter-Wave Diode-Grid Phase Shifter;   

Others  :  https://thesis.library.caltech.edu/851/1/Lam_ww_1987.pdf

美国|英语

来源: Caltech THESIS

【 摘 要 】

Many applications at millimeter wavelengths require fast electronic phase shifters. In this study, the design of diode-grid phase shifters is presented, the fabrication of diode-grids on monolithic gallium-arsenide substrates is demonstrated, and the measurement of these grids is discussed. A new computer-aided design tool is developed to provide an interactive environment for design and to form a basis for comparing theory and experimental results. Diode-grids have been fabricated on 2 cm by 3 cm gallium-arsenide wafers with 2000 aluminum Schottky diodes. A novel small aperture reflectometer is computerized to use a wave-front division interference technique to measure the reflection coefficient of the grids. A 70° phase shift with a 6.5-dB loss was measured at 93 GHz when the bias on the diode-grid was changed from -3V to +1V.