On the Electrical and Numerical Properties of High Q Resonances in Frequency Selective Surfaces

Barlevy, A.S.; Rahmat-Samii, Y.

doi:10.2528/pier98101301

Cited by 8 publications

(9 citation statements)

References 8 publications

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“…This kind of anomaly has been explained in the study of diffraction gratings [12,13]. The specific anomalies present in our data are related to the ''1/2 k high-Q resonance'' that have been already described in the case of free-standing capacitive FSS irradiated with s polarised light [14]. In this case a resonance occurs when the wavelength k R is approximately twice the square width w : k R $ 2w.…”

Section: High-q Resonancementioning

confidence: 68%

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Polarisation effects investigations in quasi-optical metal grid filters

Pisano

Weaver

2006

Infrared Physics & Technology

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Section: High-q Resonancementioning

confidence: 68%

“…12 illustrates also the current distribution on the mesh surface as a function of frequency. The current mode distributions around the peak frequency, predicted in the literature [14], can be studied.…”

Section: Visualisation Of the Fields And Results Formentioning

confidence: 99%

Polarisation effects investigations in quasi-optical metal grid filters

Pisano

Weaver

2006

Infrared Physics & Technology

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“…† Antiresonance is a phenomenon in which the electric field scattered by the FSS becomes zero at θ = 0°. In oblique incidence, reflection and transmission are switched in a very narrow bandwidth [10,14]. In Ref.…”

Section: Frequency Characteristics With Dielectric Loadingmentioning

confidence: 99%

Analysis of frequency selective surface with arbitrarily shaped element by equivalent circuit model

Ohira

Deguchi

Tsuji

et al. 2005

Electron. Comm. Jpn. Pt. II

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SUMMARYThis paper presents an analysis of the characteristics of the frequency selective surface (FSS) by means of equivalent circuit models. In order to determine the circuit element parameters of the FSS with resonant elements of arbitrary shape, the eigenvalue problem of the matrix equation is solved and the Q curve of each resonance is derived from the frequency dependence of the reactance obtained from the characteristic current distributions at resonance. By equating this Q curve with that for the equivalent circuit, the circuit parameters are derived. As an example of analysis by the present method, the circuit element parameters of patch-type resonant elements designed by us using the genetic algorithm (GA) are derived. The characteristics of the dielectric-loaded FSS for the C/Ka band are analyzed by means of the equivalent circuit. The usefulness of the proposed method is verified by comparison of the frequency characteristics obtained by the method of moments and by the equivalent circuit.

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“…Frequency diversity and polarization diversity schemes provided by the FSS can diminish the unwanted interference. FSS has become useful in wireless high frequency communication systems due to the following reasons: a) the enhancement of the spectral efficiency when the interference produced by neighboring antennas operating on nearby frequencies is blocked [3], b) the improvement of the antenna's radiation characteristics [4][5][6], c) the improvement of the security in wireless indoor communication networks through binding typically unbound signals [7], and d) the circumvention of difficulties in obtaining low-loss lumped-element components needed for high quality tuning circuits [8]. Besides the conventional applications of FSS in filters, polarizers, subreflectors, and radomes, recent applications of FSS include artificial magnetic conductors [9][10][11][12], electromagnetic bandgap materials [13,14], superstrate antenna arrays [15], metamaterials [16], and electromagnetic architecture of buildings [17].…”

Section: Introductionmentioning

confidence: 99%

An Active Ring Slot With Rf Mems Switchable Radial Stubs for Reconfigurable Frequency Selective Surface Applications

Martinez-Lopez¹,

Rodriguez-Cuevas²,

Martynyuk³

et al. 2012

PIER

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Abstract-An active ring slot resonator loaded by switchable radial stubs is investigated. It is shown that this element can be used as the unit cell of a switchable reconfigurable frequency selective surface (RFSS). Equivalent circuit and full-wave mathematical models are obtained to evaluate the reflection characteristics of the RFSS based on this element. The possibility to obtain different resonant transmission frequencies is discussed. The mathematical model developed is used to design an X band RFSS capable of obtaining resonant frequencies at 9.65, 10.28, 10.83 and 12.05 GHz. Commercially available RF MEMS switches are used to evaluate the effect of the off-state capacitances over the response of the periodic structure. To validate the numerical simulation results, different active and passive diaphragms were designed, fabricated, and tested using the waveguide simulator. A good agreement between numerical and measured results was found.

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On the Electrical and Numerical Properties of High Q Resonances in Frequency Selective Surfaces

Cited by 8 publications

References 8 publications

Polarisation effects investigations in quasi-optical metal grid filters

Polarisation effects investigations in quasi-optical metal grid filters

Analysis of frequency selective surface with arbitrarily shaped element by equivalent circuit model

An Active Ring Slot With Rf Mems Switchable Radial Stubs for Reconfigurable Frequency Selective Surface Applications

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