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Author(s):
K. Ohkubo, M. Hosokawa, S. Kubo, M. Sato, Y. Takita and T. Kuroda
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Title:
R&D of Transmission Lines for ECH System
Date of publication:
Feb. 1993
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Key words:
radiation pattern, FFT, coupling of split waveguide, phase-correction bend, rectangular waveguide, rotating-whispering-gallery mode generator
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Abstract:
The performance of oversized transmission elements for millimeter waves is measured and compared with the calculation which is based on the superposition of plane wave (SPW) and on Fresnel approximation in the Huygens-Kirchhoff integral. Mode-conversion in the split waveguide is discussed from the viewpoint of on- and off-axes and 90-degrees elbow bend on phase correction is examined by using the SPW method. The design and experiment on the whispering gallery mode generator are described. A preliminary analysis of the rectangular waveguide with two corrugated plates and two plane walls is also carried out to obtain the Gaussian beam with a waist size of x-axis different from that of y-axis.
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