Design of aperiodic frequency selective surfaces for compact quasi-optical networks

Zhou, Min; Sørensen, Stig B.; Vesterdal, Niels; Dickie, R.; Baine, Paul; Montgomery, Jenny; Cahill, R.; Henry, M.; Huggard, P. G.; Toso, Giovanni

doi:10.23919/eucap.2017.7928454

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…The FSSs are etched as 4141 elements on Rogers RT5880LZ board with size of more than 10 wavelengths at each side. Unit cell setup during simulation can represent as infinite array that consist of identical elements by a plane wave in the solver during the simulation [17]. Moreover, in this paper, circular slot structure is chosen because of its simple and basic structure in order to encounter the limitation of wet etching technique.…”

Section: Resultsmentioning

confidence: 99%

Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications

Ishak

Dahri

Awang

et al. 2020

IJIE

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Terahertz radiation is in spectral region of 0.1THz to 10THz between microwave and infrared part of the electromagnetic spectrum. Terahertz radiation can propagate through wide range of dielectric materials [1]. This sparked many researchers' interest to further explore the potentiality of characterization, detection and sensing studies at terahertz range. Recently, Terahertz Time-Domain Spectroscopy has emerged as an attractive technique that enables the label-free detection on chemical and biological compounds [2]. It is because, the most of non-conductive materials such as chemical and biological compounds have unique molecular resonance that able to translate as transmission or absorption peak at terahertz range. Past studies show that, terahertz spectroscopy is more suitable in sensing, detection and characterization of various forms of material state, such as illicit drugs and explosive substances, alcohol and antibiotics contents, fructose

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Section: Resultsmentioning

confidence: 99%

Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications

Ishak

Dahri

Awang

et al. 2020

IJIE

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“…Equivalent circuits can also be used [12]. Combined with filter synthesis techniques [13], they have demonstrated good capabilities for FSS [14] and even RA synthesis [15], especially regarding bandwidth optimization. Unfortunately, they are usually restricted to canonical geometries and normal incidence.…”

Section: Introductionmentioning

confidence: 99%

Spherical Mapping of the Second-Order Phoenix Cell for Unbounded Direct Reflectarray Copolar Optimization

Richard¹,

Loison²,

Gillard³

et al. 2019

PIER C

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A general synthesis approach is proposed for reflectarrays using second order Phoenix cells. It relies on an original spherical representation that transforms the optimization domain in a continuous and unbounded space with reduced dimension. This makes the synthesis problem simpler and automatically guarantees smooth variations in the optimized layout. The proposed mapping is combined with an Artificial Neural Network (ANN) based behavioral model of the cell and integrated in a min/max optimization process. Bi-cubic spline expansions are used to decrease the number of variables. As an application, a contoured beam for space communication in the [3.6-4.2] GHz band is considered. The gain improvement compared to an initial Phase Only synthesis (POS) is up to 1.62 dB at the upper frequency. Full-wave simulation of the final array is provided as a validation.

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Direct Optimization of Quasi-Periodic Surfaces in Multi-Reflector Systems

Zhou¹,

Jørgensen²,

Borries³

et al. 2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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Design of aperiodic frequency selective surfaces for compact quasi-optical networks

Cited by 5 publications

References 5 publications

Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications

Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications

Spherical Mapping of the Second-Order Phoenix Cell for Unbounded Direct Reflectarray Copolar Optimization

Direct Optimization of Quasi-Periodic Surfaces in Multi-Reflector Systems

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