Varactor‐tunable and dipole‐grid‐based frequency‐selective surface

Mias, C.

doi:10.1002/mop.20518

Cited by 21 publications

(4 citation statements)

References 6 publications

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“…The lumped element varactors are approximately modeled via a two-layer metalization and the biasing grid by a single layer metallization as shown in [9] and are made tunable by adjusting the distance between the two layers. The SMRs are represented by gaps in the grid metalization.…”

Section: Numerical and Experimental Resultsmentioning

confidence: 99%

Varactor-tunable frequency selective surface with resistive-lumped-element biasing grids

Mias

2005

IEEE Microw. Wireless Compon. Lett.

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A novel tunable frequency selective surface (FSS) is presented consisting of vertically and horizontally positioned convoluted dipole FSS elements. Each of the latter incorporates a varactor diode, which is biased via novel resistive-lumped-element biasing grids that suppress undesirable resonances and improve the filter's low-pass response. The proposed design is shown, numerically and experimentally, to perform well. It is expected that this letter will assist research work in low-cost, large-scale tunable FSS.Index Terms-Frequency selective surface (FSS).

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Section: Numerical and Experimental Resultsmentioning

confidence: 99%

Varactor-tunable frequency selective surface with resistive-lumped-element biasing grids

Mias

2005

IEEE Microw. Wireless Compon. Lett.

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“…The finding that the changes in metamaterial unit cells' sheet resistance can induce the translation of resonant frequency triggered the research on tunable metamaterials. As a result, extensive research has been made on tunable metamaterials loaded with Schottky diodes, PIN diodes, varactor diodes, MEMS, or other components [2][3][4][5][6]. By changing the bias voltage or bias current of the active device to alter the component's impedance, the resonant frequency of metamaterials can be modulated, thus realizing the tunability of its absorption frequency and peak value.…”

Section: Electronic Component-based Tunable Metamaterialsmentioning

confidence: 99%

Research Progress in Smart Tunable Electromagnetic Materials

Liu

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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Smart tunable electromagnetic materials can regulate and control their electromagnetic parameters by applying an external field, thus realizing the goal of smartly and actively controlling their electromagnetic properties such as response frequency, resonance range, phase, and polarization. In this paper, smart tunable electromagnetic materials are classified into conductive polymer-based tunable materials, electronic component-based tunable metamaterials, liquid crystal-based tunable materials, graphene-based tunable materials according to different tunable substrates. The relevant research progress of smart tunable electromagnetic materials is reviewed, and their application directions are summarized.

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“…Many varactor-tuned FSSs are present in the literature. Tunable transmissive absorbers and filters are well studied, although not applicable in this case [22]- [25]. One of the design goals for this system is to use a single interrogating radar, so a reflective FSS is necessary.…”

Section: Low-power Remote Sensingmentioning

confidence: 99%

A Low-Power Tunable Frequency Selective Surface for Multiplexed Remote Sensing

Jenkins

Gregory

Cardillo³

et al. 2021

IEEE Access

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In this interdisciplinary work, a low-power varactor-tunable frequency selective surface is presented for use with a multiplexed remote sensor system. Combined with a low power sensor and control system, voltage biasing of the proposed frequency selective surface panel can be used to modulate the center frequency of a reflection peak, which in turn may be detected by remote interrogation through a radar system. The control board and frequency selective surface were found to draw only 200 μA of current during typical operation from two 3V CR2032 button batteries, enabling continuous operation for weeks at a time (even longer if operated in wake-up mode) when used in conjunction with a suitably low power sensor. Centered at 3 GHz, the backscatter peak can be modulated across a range of 200 MHz, and the combined system was shown to successfully differentiate between various concentrations of ammonia under test conditions.

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Varactor‐tunable and dipole‐grid‐based frequency‐selective surface

Cited by 21 publications

References 6 publications

Varactor-tunable frequency selective surface with resistive-lumped-element biasing grids

Varactor-tunable frequency selective surface with resistive-lumped-element biasing grids

Research Progress in Smart Tunable Electromagnetic Materials

A Low-Power Tunable Frequency Selective Surface for Multiplexed Remote Sensing

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