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Reduction of mode coupling effects in double layer dipole slot dichroics

Callaghan, Peter and Parker, Edward A. (1991) Reduction of mode coupling effects in double layer dipole slot dichroics. In: 1991 Seventh International Conference on Antennas and Propagation, ICAP 91. IEEE, pp. 701-704. ISBN 0-85296-508-7. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:38659)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)

Abstract

The authors present some experimental and theoretical results for a selection of two layered dichroic panels. This serves to illustrate the additional problems caused by evanescent mode coupling in such multiple layer configurations, and some methods of reducing these effects. The FSS considered are all arrays of simple dipole slots. These elements offer the advantage of simplicity in construction and in basis function representation in modal analysis. They give a passband transmission characteristic and have potential applications where their polarisation discrimination is an asset. They suffer, however, from consequences of their high resonant wavelength relative to their unit cell size. Some higher order modes are only weakly evanescent in the vicinity of the passband, resulting in detrimental consequences. This situation can occur with other commonly used array geometries, particularly multiple loop elements (double square loops, concentric rings) where the inner loops are, effectively, widely spaced.

Item Type: Book section
Uncontrolled keywords: antenna arrays; dipole antennas; polarization
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Ted Parker
Date Deposited: 10 Mar 2014 09:42 UTC
Last Modified: 09 Aug 2019 10:01 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/38659 (The current URI for this page, for reference purposes)
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