Abstract
A new method is developed for mode analysis of microwaves propagating in an oversize waveguide. A curved reflector is used to disperse the different modes in different directions. The locations of the mode powers are systematically distributed on an intercepting absorber plane. An infrared camera is used for quick visual analysis of the mode map produced as a temperature distribution on the absorber sheet. Detailed analysis is also made by numerically processing the image data. Polarizations of the constituent modes can be determined with a rotated microwave receiver. Usefulness of this method is experimentally demonstrated by comparison with other techniques.
Published Version
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