Journal ArticleDOI
Spectral-domain analysis of frequency selective surfaces comprised of periodic arrays of cross dipoles and Jerusalem crosses
Chich-Hsing Tsao,Raj Mittra +1 more
TLDR
In this paper, a full-wave analysis for the problem of scattering frequency selective surfaces from (FSS) comprised of periodic arrays of cross dipoles and Jerusalem crosses is presented, where the formulation is carried out in the spectral domain where the convolution form of the integral equation for the induced current is reduced to an algebraic one.Abstract:
A full-wave analysis for the problem of scattering frequency selective surfaces from (FSS) comprised of periodic arrays of cross dipoles and Jerusalem crosses is presented. The formulation is carried out in the spectral domain where the convolution form of the integral equation for the induced current is reduced to an algebraic one. The equation is then solved using the Galerkin's procedure applied in the spectral domain. A set of entire-domain type "junction basis functions," which, is demonstrated in this paper to be essential to account correctly for the discontinuous nature of the induced current at the junction of the cross, is included in the expansion for the unknown induced current. This analysis is computationally efficient, and its accuracy is verified by the agreement between the computed theoretical data and the experimental results reported by other authors.read more
Citations
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Journal ArticleDOI
Techniques for analyzing frequency selective surfaces-a review
Raj Mittra,Chi Hou Chan,T. Cwik +2 more
TL;DR: In this article, a number of representative techniques for analyzing frequency-selective surfaces (FSSs), which comprise periodic arrays of patches or apertures in a conducting screen and find important applications as filters in microwaves and optics, are discussed.
Journal ArticleDOI
Broadband Radar Cross-Section Reduction Using AMC Technology
Juan Carlos Iriarte Galarregui,Amagoia Tellechea Pereda,Jose Luis Martinez de Falcon,Inigo Ederra,Ramon Gonzalo,Peter de Maagt +5 more
TL;DR: In this paper, a planar broadband chessboard structure is proposed to reduce the radar cross-section (RCS) of an object by combining two artificial magnetic conductor (AMC) cells.
Equivalent-circuit models for frequency-selective surfaces at oblique angles of incidence
TL;DR: In this article, a correction term is derived which enables transmission responses to be modelled at oblique angles of incidence, which is useful for designing printed frequency-selective surfaces.
Journal ArticleDOI
Tri-band frequency selective surface with circular ring elements
TL;DR: Theoretical analysis, physical reasonings, and experimental verifications are presented for a frequency selective surface with circular ring elements in this article, where the dielectric loading effect is used to reduce ring size and element spacing to avoid the grating lobe problem.
Journal ArticleDOI
Efficient calculation of the free-space periodic Green's function
R.E. Jorgenson,Raj Mittra +1 more
TL;DR: In this article, a method is discussed to overcome the slow convergence by using the Poisson summation formula and summing in a combination of spectral and spatial domains, and a parameter study is performed to determine an optimum way to weigh the combination of domains.
References
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Design of a dichroic Cassegrain subreflector
Vishwani D. Agrawal,W. Imbriale +1 more
TL;DR: In this article, a dichroic subreflector for a dual-frequency reflector antenna is described, which is achieved by a surface of crossed dipoles printed on a dielectric sheet.
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Diffraction of Electromagnetic Waves by a Conducting Screen Perforated Periodically with Holes
TL;DR: In this paper, the reflection and transmission of a plane wave incident on a thin perfectly conducting screen perforated periodically with circular holes are considered, where the spacings between holes may be comparable to or less than the wavelength.
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Resonant-grid quasi-optical diplexers
J. A. Arnaud,F. A. Pelow +1 more
TL;DR: Experimental results are reported concerning the transmission, reflection, and depolarization of metal grids that reflect an upper band, center at 30 GHz, and transmit a lower band, centered at 20 GHz.
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