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Hollow-cylinder waveguide isolators for use at millimeter wavelengthsA semiconductor waveguide isolator consisting of a hollow column of a semiconductor mounted coaxially is considered in a circular waveguide in a longitudinal dc magnetic field. An elementary and physical analysis based on the excitation of plane waves in the guide and a more rigorous mode matching analysis are presented. These theoretical predictions are compared with experimental results for an InSb isolator at 94GHz and 75 K.
Document ID
19750003694
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kanda, M. (NBS Boulder, Colo., United States)
May, W. G. (Colorado Univ. Boulder, CO, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1974
Subject Category
Solid-State Physics
Report/Patent Number
NASA-CR-140760
Report Number: NASA-CR-140760
Accession Number
75N11766
Funding Number(s)
CONTRACT_GRANT: NGR-06-003-088
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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