DocumentCode :
1014803
Title :
The performance of an iris-loaded planar phased-array antenna of rectangular waveguides with an external dielectric sheet
Author :
Van Schaik, H.J.
Author_Institution :
TNO, The Hague, Netherlands
Volume :
26
Issue :
3
fYear :
1978
fDate :
5/1/1978 12:00:00 AM
Firstpage :
413
Lastpage :
419
Abstract :
A new method for calculating the performance of an iris-loaded planar phased-array antenna of rectangular waveguides is presented. The method is based upon the expansion of the tangential electric aperture field in terms of judiciously chosen functions. Also, the influence of a dielectric sheet in front of an antenna the apertures of which are loaded with inductive irises is investigated. In the experiments, a sheet with a low relative permittivity ( 
or 
) is spaced in front of a space-fed planar antenna of some 850 radiating elements, and the total transmitted power of the antenna is measured as a function of frequency and scan angle. The results indicate, that both in theory and in practice, an excellent match can be achieved with a polythene sheet ( ) or a Perspex sheet ( ).
or ) is spaced in front of a space-fed planar antenna of some 850 radiating elements, and the total transmitted power of the antenna is measured as a function of frequency and scan angle. The results indicate, that both in theory and in practice, an excellent match can be achieved with a polythene sheet ( ) or a Perspex sheet ( ).Keywords :
Dielectric-loaded antennas; Loaded antennas; Phased arrays; Planar arrays; Waveguide arrays; Antenna measurements; Aperture antennas; Dielectrics; Loaded antennas; Permittivity; Planar arrays; Planar waveguides; Rectangular waveguides; Transmitting antennas; Waveguide discontinuities;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1978.1141860
Filename :
1141860
Link To Document :
