Complementary Frequency Selective Surface Array Optimization Using Equivalent Circuit Model

Kanth, V. Krushna; Raghavan, S.

doi:10.1109/imarc.2017.8449691

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…From the analysis developed in [13], Kanth and Raghavan [14] proposed a simple CFSS analysis technique based on Babinet's principle for two closely coupled conductive elements. An ECM combined with the transmission line model was employed to analyse the structure response.…”

Section: Previous Workmentioning

confidence: 99%

“…The outer diameter of the loop is d, w is the thickness of the aperture and g is the distance between two adjacent rings. In [14], Kanth and Raghavan proposed an equivalent circuit for square-loop apertures, obtaining good results. Therefore, based on [14], we propose the same equivalent circuit for circular ring aperture, considering specific adjustments to take into account the arc shape of the geometry.…”

Section: Circular Ring Aperturementioning

confidence: 99%

“…2. [9] square loop combined with a convoluted geometry ECM application of ECM in millimetre wave and new geometry modelling [10] double square loop ECM improvement of the ECM for analysing finite and curved FSS [11] square loop ECM with polynomial fit new procedure to use ECM [12] gridded square loop ECM with analytical procedure to model diodes employment of the ECM for analysing active FSS [13] square-loop patch and slot ECM optimisation of ECM and classical modelling of a slot geometry [14] square-loop patch and slot ECM with transmission line theory application of the ECM to analyse CFSS present ring and concentric rings slots ECM new modelling of two different geometries that can be used in CFSS…”

Section: Circular Ring Aperturementioning

confidence: 99%

“…L 1 can be determined by (12). The value of L 2 is composed by the interaction between the inner conductive circular ring of thickness w 2 and the conductive strip g. L 3 is calculated in (14), is the sum of the inductive reactance of the circular patch (multiplied by a reduction factor 0.1 due to its low influence) and that of the conductive ring formed between the double circular apertures. In (15), the value of C 1 is computed considering the capacitive interaction between the parallel strips and conductive loop.…”

Section: Concentric Circular Ring Aperturesmentioning

confidence: 99%

See 3 more Smart Citations

Equivalent circuit model for analysis of frequency selective surfaces with ring and double concentric ring apertures

Silva

Campos

Neto

2020

IET Microwaves, Antennas & Propagation

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In this study, the authors present two new proposals for representation by the equivalent circuit model for aperture‐type circular ring geometries, not yet studied in the literature. The study consists of the frequency response representation of frequency selective surfaces (FSSs) formed by circular ring aperture and concentric circular ring apertures. At first, the authors performed an equivalent circuit analysis for a single cell formed by a single circular ring. Then, they extend the analysis to concentric circular rings, which when used as FSS unit elements, present two passband responses. They compare results of the proposed method with results obtained with the commercial software ANSYS HFSS, showing a good agreement between the results. They built four prototypes and compared measured results with simulated results obtained with the suggested method and it completes the proposed equivalent circuit validation.

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Section: Previous Workmentioning

confidence: 99%

Section: Circular Ring Aperturementioning

confidence: 99%

Section: Circular Ring Aperturementioning

confidence: 99%

Section: Concentric Circular Ring Aperturesmentioning

confidence: 99%

See 2 more Smart Citations

Equivalent circuit model for analysis of frequency selective surfaces with ring and double concentric ring apertures

Silva

Campos

Neto

2020

IET Microwaves, Antennas & Propagation

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show abstract

“…Some techniques have been investigated to solve these issues. Complementary frequency selective surfaces (CFSSs) that utilize a hybrid of two closely coupled FSS were introduced 11,12 . CFSSs are composed of a layer of conducting elements and a layer of aperture elements, which are etched on either side of a dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

A design of broadband bandpass frequency selective surface

Hong

Yang

et al. 2022

Micro & Optical Tech Letters

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In this paper, a broadband frequency selective surface (FSS) based on a multilayer coupling cascade is presented. The overall structure consists of three metallic layers and two dielectric substrates. In addition, a crosspatch terminated with an E-shaped structure and a gradient cross structure with a slot is introduced in the middle metallic layer to control the transmission zero and extent of the current path, respectively. The unit cell periodicity is about 0.27 λ 0 , and the overall thickness of the dielectric layer is about 0.087 λ 0 . Prototypes of the proposed FSS are designed and simulated, and an equivalent circuit model is developed to explain the mechanism further. Finally, the FSS prototype works at the center frequency of 12.2 GHz with a relative −0.5 dB bandwidth of 70% and a relative −3dB bandwidth of 104%. The frequency responses are relatively stable with the variation of incidence angles from 0°t o 60°.

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Dual‐ and triple‐passband coupled‐complementary FSSs based on the four‐arms star geometry

F. Mamedes,

Bornemann,

Gomes Neto

et al. 2024

IET Microwaves Antenna & Prop

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The authors propose a system of closely coupled‐complementary frequency‐selective surfaces (FSSs) based on the four‐arms star geometry with dual‐ and triple‐passbands responses for 5G applications. Four complementary structure configurations are presented, and depending on the chosen configuration, the structure can create two or three transmission bands in one or both polarisations of the electromagnetic waves. The designed FSSs are compact and have stable behaviour at different incident angles. The complementary FSS passes signals around 2.6 and 6.2 GHz, and a structural offset allows the transmission at a third frequency (4.2 GHz). To validate the proposed designs, four prototypes are fabricated and measured. Numerical and experimental characterisations are in good agreement.

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Complementary Frequency Selective Surface Array Optimization Using Equivalent Circuit Model

Cited by 8 publications

References 7 publications

Equivalent circuit model for analysis of frequency selective surfaces with ring and double concentric ring apertures

Equivalent circuit model for analysis of frequency selective surfaces with ring and double concentric ring apertures

A design of broadband bandpass frequency selective surface

Dual‐ and triple‐passband coupled‐complementary FSSs based on the four‐arms star geometry

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