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On the Attenuation of Guided Waves in the Limit of High Frequencies

Papas, Charles H. (1958) On the Attenuation of Guided Waves in the Limit of High Frequencies. Caltech Antenna Laboratory Technical Report, 15. California Institute of Technology , Pasadena, CA. (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20191001-161617326

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Abstract

The conventional formulas for the attenuation of waves due to the wall losses in uniform waveguides are based on the two assumptions that the wall currents are the same as the loss-free currents and that the surface resistance of the highly conductive walls is isotropic. In the limit of high frequencies the former assumption remains valid whereas the latter assumption breaks down. As the frequency is increased the surface resistance becomes anisotropic in the sense that it assumes different values depending on whether the wall current is longitudinal or transverse. In this paper new attenuation formulas are derived, which take into account the high-frequency anisotropy of the surface resistance and hence yield accurate results for all frequencies.


Item Type:Report or Paper (Technical Report)
Additional Information:This research was supported by the U. S. Air Force through the Air Force Office of Scientific Research of the Air Research and Development Command, under Contract No. AF 18(600)-1113.
Group:Caltech Antenna Laboratory
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)AF 18(600)-1113
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AFOSRTN-58-462
ASTIA158 269
Series Name:Caltech Antenna Laboratory Technical Report
Issue or Number:15
DOI:10.7907/TSY9-2J11
Record Number:CaltechAUTHORS:20191001-161617326
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191001-161617326
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99000
Collection:CaltechAUTHORS
Deposited By: Melissa Ray
Deposited On:02 Oct 2019 21:50
Last Modified:03 Oct 2019 21:46

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