Title :
A Millimeter-Wave Isolator Containing a Semiconductor Rod in a Circular Waveguide
Author :
Kanda, Motohisa ; May, William G.
Abstract :
Attenuation characteristics of an InSb waveguide isolator at 94 GHz and 75 K are given experimentally and theoretically. The structure is a rod of InSb placed coaxially in a circular waveguide. Operation of the device depends on changes of both absorption and cutoff wavelength in the structure with direction of propagation of a circularly polarized signal. Over 20-dB isolation is measured with 3-dB forward loss.
Keywords :
Dielectric constant; Electromagnetic waveguides; Electrooptical waveguides; Isolators; Magnetic fields; Magnetic materials; Microwave devices; Polarization; Semiconductor waveguides; Waveguide theory;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1975.4314424
