Equivalent Circuit Model for Coupled Complementary Metasurfaces

Bukhari, Syed Sheheryar; Whittow, William G.; Vardaxoglou, J.C.; Maci, S.

doi:10.1109/tap.2018.2860052

Cited by 20 publications

(9 citation statements)

References 44 publications

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“…The dipole layer adds a parallel capacitance to the aperture layer, which results in the downshifting of the bandpass resonance frequency. This has been demonstrated by the equivalent circuit model presented in [33] as shown in Figure 2. The aperture layer (being a pass band structure) is represented by a parallel LC circuit, while the dipole layer (which is a stop band structure) is represented by a series LC circuit.…”

Section: Overview Of Cfss Measurement Process a Cfss Structurementioning

confidence: 80%

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

et al. 2020

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This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjacent to the CFSS has been used for retrieving of the complex permittivity of the MUT. The complex permittivity of the MUT are determined based on the measured bandpass resonant frequency and insertion loss of the CFSS with the MUT. This is an amplitudeonly method where phase measurements are not required. This technique offers a convenient, fast, low-cost and nondestructive measurement that is not restricted by the sample size or shape. INDEX TERMS Dielectric losses, dielectric measurement, frequency selective surfaces, permittivity.

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Section: Overview Of Cfss Measurement Process a Cfss Structurementioning

confidence: 80%

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

et al. 2020

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“…The values of equivalent capacitance and inductance in Fig. 3 are calculated by ADS [21][22][23], as shown in Table I. The comparision of equivalent circuit simulation by ADS and fullwave electromagnetic simulation by HFSS are presented in Fig.…”

Section: Equivalent Circuit Modeling and Analysismentioning

confidence: 99%

A 3-D Wide Passband Frequency Selective Surface With Sharp Roll-Off Sidebands and Angular Stability

Wang

Jiang

Hong

et al. 2022

Antennas Wirel. Propag. Lett.

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In this letter, a 3D wide passband frequency selective surface (FSS) is proposed. Compared with planar wide passband FSSs, 3D structures usually present superior roll-off characteristics, especially under lower frequency. However, 3D wideband FSSs typically have greater insertion loss in the passband, and the transmission characteristic is sensitive to the angle of incident electromagnetic wave. The proposed FSS, by concurrently applying the design methods of planar FSSs and 3D FSSs, provides sharp double roll-off sidebands while maintaining excellent angular stability and low insertion loss in a wide passband. The simulation results show that the designed FSS can achieve a passband range from 5.86 GHz to 13.4 GHz with an insertion loss of less than 1 dB, and it can retain a stable transmission characteristic with the incident angle ranging from 0° to 45°. The proposed FSS is fabricated and measured in an anechoic chamber, and the measured results show that the fabricated FSS achieves a -3 dB passband from 5.33 GHz to 14.5 GHz. Under different incident angles ranging from 0° to 45°, the FSS also features the lower and upper roll-off transition bandwidths of 6.4% and 4.7%, respectively.

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“…The aid of Babinet's principle can be used to develop complementary metasurfaces. A comprehensive treatment of such metasurface design with an equivalent circuit has been presented in [98]. The complementary metasurfaces have been used to design antennas and transmission lines, and offer the possibility of tuneable antennas and circuits [99].…”

Section: Metasurface Antennasmentioning

confidence: 99%

A Metasurfaces Review: Definitions and Applications

2019

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This paper is a critical review of metasurfaces, which are planar metamaterials. Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials. However, owing to their 3D-nature and resonant characteristics, they suffer from manufacturing complexity, losses and are highly dispersive. The 2-dimensional nature of metasurfaces allows ease of fabrication and integration into devices. The phase discontinuity across the metasurface offers anomalous refraction, thereby conserving the good metamaterial properties while still offering the low-loss characteristics. The paper discusses salient features and applications of metasurfaces; wavefront shaping; phase jumps; non-linear metasurfaces; and their use as frequency selective surfaces (FSS).

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Equivalent Circuit Model for Coupled Complementary Metasurfaces

Cited by 20 publications

References 44 publications

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

A 3-D Wide Passband Frequency Selective Surface With Sharp Roll-Off Sidebands and Angular Stability

A Metasurfaces Review: Definitions and Applications

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