Modelling of impedance‐loaded wire frequency‐selective surfaces with tunable reflection and transmission characteristics

Malyuskin, Oleksandr; Fusco, Vincent; Schuchinsky, Alexander

doi:10.1002/jnm.681

Cited by 5 publications

(2 citation statements)

References 21 publications

(47 reference statements)

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“…For periodic arrays, an efficient rigorous method of analysis is the periodic method of moments (PMM) [38]. Its implementation based on subdomain functions is used here, which has previously been detailed and validated for an array of two-split rings [39] and other types of wire elements [40].…”

Section: Reflection and Transmission For Gratings Of Planar Chiral Spmentioning

confidence: 99%

Planar chirality of plasmonic multi-split rings

Arnaut¹

2009

J. Opt. A: Pure Appl. Opt.

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Abstract. We develop an analytical framework for the analysis of planar chiral multi-split rings, based on a Fourier series expansion of the induced current. The number, width, and location of each split (gap) is arbitrary. Provision is made for the possibility of inserting lumped active or passive impedance loads in the gaps. The model demonstrates the hallmark of planar chirality and its consequent magneto-electric coupling as a function of the parameters of the splits and impedance loads. It is demonstrated that impedance loads sequenced in a clockwise or anti-clockwise fashion allow for generation of dissymetric current distributions in the plane, like for geometric (structural) chirality.We also determine the effect of planar chirality on the relevant dyadic polarizability components of a split ring.Reflection and transmission coefficient characteristics of regular arrays of such rings are determined with the aid of the periodic method of moments. Phase-coherent detection of the sense of handedness and incoherent detection of planar chirality per se by measurement of the field intensity are shown to be possible, in both the reflection and transmission characteristics. These results are relevant to both coherent and incoherent detection at optical and suboptical wavelengths.

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Section: Reflection and Transmission For Gratings Of Planar Chiral Spmentioning

confidence: 99%

Planar chirality of plasmonic multi-split rings

Arnaut¹

2009

J. Opt. A: Pure Appl. Opt.

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“…Different methods have been used to reconfigure or tune the response of the RFSS: a) by modifying the constitutive parameters of the FSS screen or substrate [20][21][22][23], b) by changing the geometry of the periodic unit cell [24], and c) by introducing control devices into the periodic unit cell [25,26]. In fact, active control devices at microwave frequencies are able to ensure a rapid response in the RFSS's elements.…”

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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