Slow Wave Applications of Electromagnetically Induced Transparency in Microstrip Resonator

A proof of concept of application of Nano-Ionic Conductive-Bridging Metal-Insulator-Metal (MIM) switches in electronically reconfigurable band stop filters, through design, and experimental results are presented in this article. Two similar designs of band stop filters with different mechanism of operation are proposed herewith. One is a microstrip, resonant open stub based band stop filter and the other is a microstrip tuned shorted stub based band stop filter. Electrical length of the stubs in both these devices are tuned by an integrated MIM switch forcing them to resonate at different frequencies and thus achieving electronically switchable band stop filtering characteristics. Working mechanism of the devices is validated with the help of developed electrical equivalent circuit models. Analysis on time stability of switch states for 1000 minutes with affirmative results is also presented herewith. These devices are fabricated without any soldered electrical components and without the use of any clean room technologies, using proven low cost method, and are promising to work at very-low power and have the potential to be directly printed on low cost flexible substrates like paper, for potential disposable applications.

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“…An open-circuited resonant stub loaded on to a microstrip transmission line could be modelled as a serial RLC network as shown in Fig. 3 [17].…”

Section: Analysis Of Proposed Designmentioning

confidence: 99%

Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Jayakrishnan

Vena

Sorli

et al. 2019

IET Microwaves, Antennas & Propagation

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“…An inductor, capacitor and resistor (LCR) circuit are essential for studying resonance phenomena. The resonating LCR circuits have a wide range of applications in designing various electronic devices (Amin et al, 2018;Teymour et al, 2014;Pan et al, 2015;Choi et al, 2015;Li & Xu, 2014;Li et al, 2012;Buccella et al, 2017). Both inductive reactance and capacitive reactance depend on the frequency of the ac source.…”

Section: Introductionmentioning

confidence: 99%

Technique for Measuring Magnitudes and Phases of Voltage and Current in the Band-Selective Parallel LCR Circuit

Lamichhane

2019

J. Inst. Sci. Tech.

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The current in the parallel LCR (inductor, capacitor and resistor) circuit depends not only on the magnitude of the applied electromotive force (emf) but also on its frequency. The circuit current in the parallel LCR circuit becomes very small in the resonating region, but at the same time, the potential difference across the LC tank becomes very large. These results are justified if there is a large induced current in the LC tank in such a way that the inductive and capacitive branch currents are nearly out of phase so that the vector sum of the currents be minimal. This theory can be verified by inserting a small series resistor in each branch. Finally, calculated magnitudes and phases of the potential differences across the newly connected resistors which are directly related to the magnitudes and phases of corresponding branch currents verify the theory.

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“…16,30 Quite remarkably, the equations governing the dynamics of acoustic waves were shown to be equivalent to the Maxwell equations in the two-dimensional (2D) case allowing us to draw analogies between the two types of waves. 31 The Electromagnetically induced transparency (EIT) [32][33][34] and the associated Fano resonances 35,36 are wellestablished areas of optics research, recently investigated in the context of acoustics. [37][38][39] The optical parabolic reflectors have historically been used in telescopes to focus the light rays coming from distant objects.…”

Section: Introductionmentioning

confidence: 99%

A perfect Fresnel acoustic reflector implemented by a Fano-resonant metascreen

Amin

Siddiqui

Farhat

et al. 2018

Journal of Applied Physics

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We propose a perfectly reflecting acoustic metasurface which is designed by replacing the curved segments of the traditional Fresnel reflector by flat Fano-resonant sub-wavelength unit cells. To preserve the original Fresnel focusing mechanism, the unit cell phase follows a specific phase profile which is obtained by applying the generalized Snell's law and Fermat's principle. The reflected curved phase fronts are thus created at the air-metasurface boundary by tailoring the metasurface dispersion as dictated by Huygens' principle. Since the unit cells are implemented by sub-wavelength double slit-shaped cavity resonators, the impinging sound waves are perfectly reflected producing acoustic focusing with negligible absorption. We use plane-wave solution and full-wave simulations to demonstrate the focusing effects. The simulation results closely follow the analytical predictions.

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Slow Wave Applications of Electromagnetically Induced Transparency in Microstrip Resonator

Cited by 41 publications

References 26 publications

Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Technique for Measuring Magnitudes and Phases of Voltage and Current in the Band-Selective Parallel LCR Circuit

A perfect Fresnel acoustic reflector implemented by a Fano-resonant metascreen

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