Square Loop and Slot Frequency Selective Surfaces Study for Equivalent Circuit Model Optimization

Ferreira, David; Caldeirinha, Rafael F. S.; Cuiñas, Íñigo; Fernandes, Telmo R.

doi:10.1109/tap.2015.2444420

Cited by 176 publications

(103 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When n is approaching zero from the negative side, there is only one supported mode, and its dispersion relation is given by the second equation of (28). Figure 3 shows the distribution of dispersion curves for the two extreme scenarios for the TE polarization.…”

Section: B Investigation Of Extreme Scenariosmentioning

confidence: 99%

Parallel-Plate Waveguides Formed by Penetrable Metasurfaces

Mirmoosa

Tretyakov

2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

In this paper, we introduce and study parallel-plate waveguides formed by two penetrable metasurfaces having arbitrary isotropic sheet impedances. We investigate guided modes of this structure and derive the corresponding dispersion relations. The conditions under which transverse magnetic and transverse electric modes can exist are discussed, and different scenarios including lossless (reactive) metasurfaces, gain-and-loss sheets and extreme cases are under general consideration. Resonant and non-resonant dispersive sheets and corresponding extreme cases are investigated. Our theoretical results are confirmed with fullwave simulated results considering practical realizations of the proposed parallel-plate waveguide which exploit two frequencyselective surfaces. Finally, the obtained theoretical formulas are applied to study the dispersion diagrams for waves along resonant sheets at different distances between the two identical or different metasurfaces. We hope that this study is useful for future applications at both microwave and optical regimes.

show abstract

Section: B Investigation Of Extreme Scenariosmentioning

confidence: 99%

Parallel-Plate Waveguides Formed by Penetrable Metasurfaces

Mirmoosa

Tretyakov

2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…In short, the smaller dimension of d increases the resonant frequency, while the smaller unit cell dimension s enables more distinct angular responses. An equivalent circuit of the 2D FSS shown in Figure 2(b) consisting of inductive and capacitive components in parallel was modeled to simplify the resonance estimation and analysis [17][18][19]. The simulated frequency response of the 2D square FSS shown in Figure 2(c) indicated a band stop response centered at 2.922 GHz.…”

Section: Two Dimensional (2d) Fssmentioning

confidence: 99%

Feasibility Study of Frequency Selective Surfaces for Structural Health Monitoring System

Suhaimi¹,

Azemi²,

Soh³

2018

PIER C

View full text Add to dashboard Cite

Abstract-A new type of three-dimensional (3D) Frequency Selective Surfaces (FSS) applied to passive sensing in Structural Health Monitoring (SHM) is presented. Such passive FSS sensors are proposed as an alternative to conventional sensors to eliminate the need of DC/AC power. Moreover, these FSSs are modified in a 3D form to feature enhanced performance compared to conventional FSSs and sensors. More specifically, the proposed 3D FSS is able to control its sensitivity |S 21 | in either TE or TM incident waves. In this project, incident angle characteristics are evaluated for SHM applications to obtain angular responses of up to 80 degrees. The resonant behavior of the TE-incident wave is shown to be sensitive towards the incident angle and is suitable to be used for monitoring any building tilting and damage. This is due to the significant 3D length changes of the conductor elements. Meanwhile, the TM-incident wave is found to be insensitive towards the incident angle.

show abstract

“…In [13], more accurate derivations for the surface impedances of the SG and SP were proposed for oblique incidence. e surface impedance of other two basic structures, i.e., SS and SL, has been investigated in [14][15][16][17]. Based on these studies, one of the objectives of this paper is to derive the EC parameters of the four types of basic structures for both normal and oblique incidence and then to complete the EC representations of the four building blocks.…”

Section: Introductionmentioning

confidence: 99%

Design of Multilayer Frequency-Selective Surfaces by Equivalent Circuit Method and Basic Building Blocks

2019

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

An equivalent circuit method (ECM) is proposed for the design of multilayer frequency-selective surfaces (FSSs). In contrast to the existing ECMs that were developed mainly for the analysis of the properties of a given FSS, the presented ECM aims at providing the initial design parameters of an FSS from the desired frequency response. In this method, four types of basic FSS structures are used as the building blocks to construct the multilayer FSSs, and their surface impedances in both the normal-and the obliqueincidence situations are studied in detail in order to achieve more accurate equivalent circuit (EC) representation of the entire FSS. For a general FSS design with expected frequency response, the EC parameters and the geometrical sizes of the required basic building blocks can be synthesized from a few typical S-parameter (S 11 /S 12 ) samplings of the response curves via a simple leastsquare curve-fitting process. e effectiveness and accuracy of the method are shown by the designs of a band-pass FSS with steep falling edge and a miniaturized band-pass FSS with out-of-band absorption. e prototype of one design is fabricated, and the measured frequency response agrees well with the numerical results of the ECM and the full-wave simulations.

show abstract

Square Loop and Slot Frequency Selective Surfaces Study for Equivalent Circuit Model Optimization

Cited by 176 publications

References 18 publications

Parallel-Plate Waveguides Formed by Penetrable Metasurfaces

Parallel-Plate Waveguides Formed by Penetrable Metasurfaces

Feasibility Study of Frequency Selective Surfaces for Structural Health Monitoring System

Design of Multilayer Frequency-Selective Surfaces by Equivalent Circuit Method and Basic Building Blocks

Contact Info

Product

Resources

About