A Technique to Identify Electromagnetic Modes in Oversize Waveguides (Short Papers)

• Published in: IEEE transactions on microwave theory and techniques Vol. 32; no. 11; pp. 1493 - 1495
• Main Authors: Carmel, Y., Chu, K.R., Read, M.E., Granatstein, V.L., Faillon, G., Boulanger, P., Kammerer, E., Mourier, G.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.1984; Institute of Electrical and Electronics Engineers
• Subjects: Apertures; Applied sciences; Circuit properties; Electric, optical and optoelectronic circuits; Electromagnetic scattering; Electromagnetic waveguides; Electronics; Exact sciences and technology; Frequency; Gyrotrons; Iris; Laboratories; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Microwave devices; Microwave propagation; Microwave theory and techniques; Visualization; Multimode waveguide; Identification; Gyrotron; Propagation mode; Liquid crystals; Overdimensioned waveguide; Waveguide

There are problems associated with the multimode character of oversize waveguides. This paper reports on a novel, direct way to identify modes in an oversize waveguide by looking at the field map on a liquid crystal sheet inserted in the waveguide. The local temperature change in the liquid crystal...