Measurements of the scattering matrix of obstacles in multimode wave guides.

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Author
Evans, Richard P.
Date
1963-06Advisor
Johnson, R. M., Jr.
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Accurate experimental determination of the impedance of obstacles in multimode waveguides is of continuing interest. The scattering matrix of a narrow, resonant, (half-wave) shunt slot in the broad face of an x-band multimode waveguide is determined experimentally and compared with present theory. A high power, (10 watt), traveling-wave tube is used in conjunction with thermistors and power meters for essentially dc measurement of attenuation and phase. Difficulties associated with modulation and crystal detection are discussed.
Appreciation is due Professor R. M. Johnson of the faculty, U.S. Naval Postgraduate School, for technical advice and equipment.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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