Modelling Terahertz Spoof Surface Plasmon Polariton Waveguides Using a Circuit Model

Cinar, Yilmaz; Yildirim, Salih; Ozsahin, Gulay; Unutmaz, Muhammed Abdullah; Ünlü, Mehmet

doi:10.1109/tthz.2021.3086690

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…It is not straightforward to directly excite the fundamental mode transverse magnetic (TM) of an SSPP waveguide. For practical purposes, SSPP structures are typically integrated with a feedline such as a coplanar waveguide (CPW) [12][13][14] , coplanar strip (CPS) [15][16][17] , microstrip (MS) 18 , or slotline (SL) 19 . The fundamental modes of the aforementioned waveguides are quasi-transverse electromagnetic (TEM) (CPW, CPS, and MS) or quasitransverse electric (TE) for the SL 20 .…”

Section: Demonstrationmentioning

confidence: 99%

Demonstration of a terahertz coplanar-strip spoof-surface-plasmon-polariton low-pass filter

Haghighat,

Darcie,

Smith

2024

Sci Rep

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There is a growing interest in spoof surface plasmon polariton (SSPP) structures at terahertz (THz) frequencies for applications such as filtering, sensing, and communications. However, to date, there are limited experiments that confirm SSPP characteristics at THz frequencies. The majority of literature focuses on simulation or verification by device scaling to Gigahertz (GHz) frequencies where standard vector network analyzers are readily available. This paper presents the first experimental verification of SSPP characteristics at THz frequencies in a guided wave system using coplanar strip (CPS) feedlines. Specifically, we design three SSPP structures with varying band-edge frequencies (1.04 THz, 0.63 THz, and 0.53 THz), then fabricate and verify the low-pass transmission characteristics using a modified THz-time-domain spectrometer (THz-TDS) system. We find strong agreement between simulation, theory, and experiment.

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Section: Demonstrationmentioning

confidence: 99%

Demonstration of a terahertz coplanar-strip spoof-surface-plasmon-polariton low-pass filter

Haghighat,

Darcie,

Smith

2024

Sci Rep

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“…Equivalent circuit model of the topology of the SSPP TL and the spiral sensor is given in figure 2(a). The SSPP TL is composed of units whose equivalent circuit is presented in the dashed boxes [24]. The metallic spiral on the other side of the substrate has the equivalent capacitance (C c ) representing the coupling with the SSPP TL, the equivalent inductance (L p ) and capacitance (C s ) of the resonator of the spiral [25], and the resistance (R s ) which represents the total resistance of the spiral resonator.…”

Section: Design Of the Mtm Sensormentioning

confidence: 99%

A metamaterial based microfluidic sensor for permittivity detection of liquid

Qiu¹,

Lei²,

Wang³

et al. 2022

J. Phys. D: Appl. Phys.

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The electromagnetic behavior of a microwave sensor has specific relationship with the physical properties of the materials to be detected, e.g., the concentration of solution and the permittivity of gas. The microwave sensor can detect changes of EM response in real time, and obtain the material properties with low sample consumption, high efficiency and dispersion characteristics. This work presents a microfluidic sensor using spiral resonators and plasmonic metamaterials with confined electromagnetic fields for intensive resonance. Two microfluidic chips with spiral channels engraved in polydimethylsiloxane (PDMS) are also adopted to enhance the interaction between the electromagnetic fields and the carried liquids at resonance frequencies. The permittivity of liquid samples can be detected through the shift of resonance frequency. A prototype of the sensor is fabricated and tested with several regular solutions and organic solvents, showing a good performance in terms of low liquid consumption (8 μL), good sensitivity (410 MHz frequency offset when εr changes from 1 to 36.7) and low cost

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“…It is not straightforward to directly excite the fundamental mode Transverse Magnetic (TM) of a SSPP waveguide. For practical purposes, SSPP structures are typically integrated with a feedline such as a coplanar waveguide (CPW) [12][13][14] , coplanar strip (CPS), [15][16][17] microstrip (MS) 18 , or slotline (SL) 19 . The fundamental modes of the aforementioned waveguides are quasitransverse electromagnetic (TEM) (CPW, CPS, and MS) or quasi-transverse electric (TE) for the SL 20 .…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Terahertz Coplanar-Strip Spoof-Surface-Plasmon Polariton Low Pass Filter

Haghighat

Darcie

Smith

2023

Preprint

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There is a growing interest in Spoof Surface Plasmon Polariton (SSPP) structures at Terahertz (THz) frequencies for applications such as filtering, sensing, and communications. However, to date, there are limited experiments which confirm SSPP characteristics at THz frequencies. The majority of literature focuses on simulation or verification by device scaling down to Gigahertz (GHz) frequencies where standard vector network analyzers are readily available. This paper presents the first experimental verification of SSPP characteristics at THz frequencies in a guided wave system useing coplanar strip (CPS) feedlines. Specifically, we design three SSPP structures with varying band-edge frequencies (1.04 THz, 0.63 THz, and 0.53 THz), then fabricate and verify the low-pass transmission characteristics using a modified THz-time-domain spectrometer (THz-TDS) system. We find strong agreement between simulation, theory, and experiment.

show abstract

Modelling Terahertz Spoof Surface Plasmon Polariton Waveguides Using a Circuit Model

Cited by 10 publications

References 31 publications

Demonstration of a terahertz coplanar-strip spoof-surface-plasmon-polariton low-pass filter

Demonstration of a terahertz coplanar-strip spoof-surface-plasmon-polariton low-pass filter

A metamaterial based microfluidic sensor for permittivity detection of liquid

Demonstration of a Terahertz Coplanar-Strip Spoof-Surface-Plasmon Polariton Low Pass Filter

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