DocumentCode
1229298
Title
A Study of Dielectric Covered Shunt Slots in a Waveguide
Author
Croswell, W.F. ; Higgins, R.B.
Author_Institution
Communications Research Section Instrument Research Division NASA Langley Research Center
Volume
2
Issue
2
fYear
1964
fDate
4/1/1964 12:00:00 AM
Firstpage
278
Lastpage
283
Abstract
The purpose of this study was to experimentally determine the effects of placing dielectric covers of various thicknesses over a shunt slot in a waveguide. Slot lengths L and displacements x were chosen so that the data cover the waveguide bandwidth for dielectric constants ¿´ from ¿´ = 1 to ¿´ = 4. Utilizing the measured data, formulas are developed for the mean values of slot conductance and resonant frequency for cover thicknesses greater than ¿¿´/4. In addition, it is shown that plane wave theory gives a bound on the conductance variation for covers thicker than ¿¿´/4. Finally, pattern and VSWR measurements of linear arrays of dielectric covered slots designed with single slot data give predictable results.
Keywords
Aerospace materials; Bandwidth; Dielectric constant; Dielectric materials; Dielectric measurements; Frequency measurement; NASA; Resonant frequency; Space vehicles; Thickness measurement;
fLanguage
English
Journal_Title
Aerospace, IEEE Transactions on
Publisher
ieee
ISSN
0536-1516
Type
jour
DOI
10.1109/TA.1964.4319598
Filename
4319598
Link To Document