DocumentCode :
1402455
Title :
A Study of the Field Distribution at an Axial Focus of a Square Microwave Lens
Author :
Matthews, P.A. ; Cullen, A.L.
Volume :
103
Issue :
4
fYear :
1956
fDate :
9/1/1956 12:00:00 AM
Firstpage :
449
Lastpage :
456
Abstract :
The field distribution near the focus of a microwave lens is studied both theoretically and experimentally. The relation between vector-field diffraction theory and scalarfield diffraction theory is discussed for this particular problem, and it is shown that in the case in question the principal component of the electric field vector can be evaluated with sufficient accuracy from the scalar theory. Measurements of the transverse component of the electric field have been made by a perturbation method using a spinning dipole. The experimental results are in good agreement with the theory. The often-discussed phase-shift of 180° in the passage of a wave through the focal plane is considered in some detail and the related change in wavelength near the focus is verified experimentally.
Keywords :
lens antennas;
fLanguage :
English
Journal_Title :
Proceedings of the IEE - Part C: Monographs
Publisher :
iet
ISSN :
0369-8904
Type :
jour
DOI :
10.1049/pi-c.1956.0059
Filename :
5244982
Link To Document :
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