Journal ArticleDOI
Aperture blockage by a subreflector in a Cassegrain antenna system
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TLDR
In this paper, the problem of aperture blockage by a subreflector in a Cassegrainian antenna system is discussed, and the Lorentz reciprocity theorem is used to derive an expression for the far field radiated by the CSA.Abstract:
The problem of aperture blockage by a subreflector in a Cassegrainian antenna system is discussed. The Lorentz reciprocity theorem is used to derive an expression for the far field radiated by the Cassegrain system. It is suggested that the field scattered by the subreflector can be computed using Keller's geometrical theory of diffraction.read more
Citations
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Aperture blockage in dual reflector antenna systems : a review
TL;DR: A submitted manuscript is the version of the article upon submission and before peer-review as mentioned in this paper, while a published version is the final layout of the paper including the volume, issue and page numbers.
Journal ArticleDOI
Commission 1: Progress in Radio Measurement Methods and Standards
R. W. Beatty,R. C. Baird,J. A. Barnes,G. Birnbaum,M. Birnbaum,H. E. Bussey,E. W. Chapin,G. F. Engen,W. W. Mumford,N. S. Nahman,G. E. Schafer,M. C. Selby,B. O. Weinschel +12 more
TL;DR: On Friday, October 13, 1967, the General Conference of Weights and Measures adopted the atomic definition of the unit of time, the second as mentioned in this paper, which is still heavily weighted toward cesium beam devices, with considerable work also on hydrogen masers.
Journal ArticleDOI
A new minimum blocking condition including subreflector and quadrupod shadow for the design of dual reflector systems
R. Wohlleben,J. Koehler +1 more
TL;DR: In this article, a numerical integration study to determine conditions under which the combined blocking shadow of the subreflector and its supports are minimized is described, and two types of minimum blocking conditions for paraboloidal reflector antennas formulated by Hannan and Gillitzer are compared.
Journal ArticleDOI
Comments on "A unified and consistent view on the singularities of the electric dyadic Greeńs function in the source region"
M. Kisliuk,J. Wang +1 more
TL;DR: In this paper, the author considers the correct mathematical expression for Green's function and gives what he considers to be the correct expression for the function in terms of the number of variables.
References
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Book
Microwave antenna theory and design
TL;DR: This book discusses microwave antenna design problems, circuit relations, reciprocity theorems, and antenna measurements - techniques.