Theoretical and experimental characterization of radial-resonator waveguide mounting structures

The authors provide a useful source of experimental data for verification of a systematic computer-based analysis for a radial-resonator diode-mounting structure. The program used is MARGARET (Modal Analysis of Radial Guide And Resonators with External Terminators), a user-oriented computer-aided-design program for the design of millimeter-wave circuits using semiconductor devices mounted in waveguiding structures. Experimental measurements give a high degree of confidence in the theoretical results obtained using MARGARET, indicating that the program can be used in the design of circuits such as oscillators, amplifiers, mixers and filters. De-embedded measurements over a wide range of diode mounting structures provide an useful source for experimental verification of theoretical analyses. The authors also demonstrate an accurate de-embedding technique for a device in which it is not possible or convenient to define calibration standards, for example, a radial-waveguide device.<>