DocumentCode :
1000817
Title :
Radiation characteristics of corrugated 
-plane sectoral horns
-plane sectoral hornsAuthor :
Narasimhan, M.S. ; Rao, V. Venkateswara
Author_Institution :
Indian Institute of Technology, Madras, India
Volume :
21
Issue :
3
fYear :
1973
fDate :
5/1/1973 12:00:00 AM
Firstpage :
320
Lastpage :
327
Abstract :
A study of the radiation characteristics of corrugated -plane sectoral horns is described. Assuming the corrugations to be infinitely thin and sufficiently close packed, impedance boundary conditions are imposed on the fields in the axial region of the horn and it is established that a separable modal solution of fields in terms of TE to 
modes is possible for this geometry. The horn aperture field is determined in terms of cylindrical wave functions and the vector diffraction formula is used to analyze the far-field radiation patterns. Excellent agreement is obtained between the theoretically derived pattern with experimental results for horns supporting the balanced 
mode with small flare angles ( 
), designed using the theory presented. Bandwidth properties of the horn have been studied which may be used to advantage in designing a corrugated -plane sectoral horn without much degradation of its radiation characteristics corresponding to the balanced made over a wide frequency bandwidth (1.5:1).
-plane sectoral horns is described. Assuming the corrugations to be infinitely thin and sufficiently close packed, impedance boundary conditions are imposed on the fields in the axial region of the horn and it is established that a separable modal solution of fields in terms of TE to modes is possible for this geometry. The horn aperture field is determined in terms of cylindrical wave functions and the vector diffraction formula is used to analyze the far-field radiation patterns. Excellent agreement is obtained between the theoretically derived pattern with experimental results for horns supporting the balanced mode with small flare angles ( ), designed using the theory presented. Bandwidth properties of the horn have been studied which may be used to advantage in designing a corrugated -plane sectoral horn without much degradation of its radiation characteristics corresponding to the balanced made over a wide frequency bandwidth (1.5:1).Keywords :
Corrugated horn antennas; Horn antennas, corrugated; Apertures; Bandwidth; Boundary conditions; Degradation; Diffraction; Geometry; Impedance; Pattern analysis; Tellurium; Wave functions;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1973.1140502
Filename :
1140502
Link To Document :
