Electric Probe Measurements on Dielectric Image Lines in the Frequency Range of 26-90 GHz

Electric-field probes, using miniature semirigid coaxial cable in connection with standard metal waveguide detectors, are described and shown to be well-suited for direct standing wave measurements on dielectric image lines. Experiments in the frequency range of 26-90 GHz for the detemination of phase and attenuation constants of image lines as well as experiments for the determination of very small reflections from matched dielectric image-line terminations and the scattering coefficients of dielectric image-line discontinuities are described.