Articles with "frequency agile" as a keyword



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Frequency‐Agile Temporal Terahertz Metamaterials

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Published in 2020 at "Advanced Optical Materials"

DOI: 10.1002/adom.202000101

Abstract: DOI: 10.1002/adom.202000101 through most material systems. These unique properties of terahertz waves have been exploited for both fundamental sciences and advanced applications, alike. However, these properties have also been a bane and has significantly hindered… read more here.

Keywords: terahertz waves; frequency; temporal terahertz; agile temporal ... See more keywords

Design and development of fluidic frequency-agile polarization-dependent FSS using FDM-based 3D-printing

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Published in 2025 at "International Journal of Microwave and Wireless Technologies"

DOI: 10.1017/s1759078725101852

Abstract: A fused deposition modeling (FDM)-based polarization-dependent frequency-agile Frequency Selective Surface using distilled water is proposed in this paper. The FSS consists of a periodic array of vertically meandered square loops with two rectangular fluidic cavities… read more here.

Keywords: frequency agile; fdm based; polarization dependent; fss ... See more keywords

Development of a Frequency Agile RF-Photonic Digital Transceiver

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Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2025.3612848

Abstract: We discuss progress in developing a frequency agile RF-photonic digital transceiver. This system integrates a photonic converter element, radio frequency (RF) preselector and commercial off-the-shelf, multi-channel digital system to create a wideband, frequency-agile, single-hardware system.… read more here.

Keywords: system; photonic digital; frequency agile; digital transceiver ... See more keywords

A Frequency-Agile and Wide-Scanning CRLH Leaky-Wave Antenna for Advanced Wireless Systems

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Published in 2025 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2025.3542297

Abstract: This letter presents a wide-angle scanning leaky-wave antenna (LWA) based on composite right-/left-handed metamaterials. The proposed LWA incorporates unit cells with a radiating slot formed by an interdigital capacitor with stepped fingers, interconnected through microstrip… read more here.

Keywords: agile wide; frequency agile; wave antenna; antenna ... See more keywords

Target Imaging and Anti-Jamming With Frequency Agile OAM Radar

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Published in 2024 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2024.3403162

Abstract: The vortex electromagnetic (EM) wave’s orbital angular momentum (OAM) enables beam to provide more target information, providing an extra dimension in resolution for the radar. However, different from the OAM-based communication system, the echo of… read more here.

Keywords: frequency agile; radar; anti jamming; oam radar ... See more keywords

Backward and Sequential Inductions for Antijamming Equilibrium Strategy Generation of Frequency Agile Radar

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Published in 2024 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2024.3383414

Abstract: Mainlobe jamming has emerged as a serious threat to the radar and the carrier frequency agility of the radar provides a promising way to address this challenge. In this article, the electromagnetic confrontation between a… read more here.

Keywords: agile radar; frequency agile; radar; game ... See more keywords

An Ultrawideband Multituned Absorber With Frequency-Agile Characteristic for EMI Shielding

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Published in 2025 at "IEEE Transactions on Electromagnetic Compatibility"

DOI: 10.1109/temc.2025.3553764

Abstract: A novel synthesis procedure for tunable absorbers is proposed, enabling frequency-agile absorption performance within ultrawide frequency band. Multiple tunable capacitive screens are incorporated to flexibly reconfigure absorption band. This article analyzes the variation in absorption… read more here.

Keywords: inline formula; frequency agile; tex math; absorption ... See more keywords

A Sparse Imaging Method for Frequency Agile SAR

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Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2022.3151079

Abstract: Frequency agility increases the difficulty of jammers to predict and estimate the carrier frequency and, thus, improves the radar electronic counter-countermeasures (ECCM) performance. In this article, frequency agility is introduced into synthetic aperture radar (SAR).… read more here.

Keywords: performance; imaging method; frequency; frequency agile ... See more keywords

Ultrafast frequency-agile terahertz devices using methylammonium lead halide perovskites

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Published in 2018 at "Science Advances"

DOI: 10.1126/sciadv.aar7353

Abstract: We demonstrate new capabilities for frequency-agile terahertz devices using perovskites. The ability to control the response of metamaterial structures can facilitate the development of new terahertz devices, with applications in spectroscopy and communications. We demonstrate… read more here.

Keywords: ultrafast frequency; devices using; frequency agile; terahertz devices ... See more keywords

Two-port metasurface lens loaded frequency agile nano antenna in a THz regime with filtering features.

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Published in 2025 at "Applied optics"

DOI: 10.1364/ao.569545

Abstract: This paper provides the design and study of a two-port silicon-graphene aerial in this regime. Some of the unique features of the designed aerial are (a) with the help of the antenna fusion approach, the… read more here.

Keywords: metasurface lens; frequency agile; port; two port ... See more keywords

Frequency-agile injection-seeded terahertz-wave parametric generation

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Published in 2019 at "Optics Letters"

DOI: 10.1364/ol.45.000077

Abstract: An injection-seeded terahertz (THz)-wave parametric generator (is-TPG) enables access to low-frequency fingerprints of molecules in the THz frequency region. However, its conventional scan repetition rate (SRR) is limited below 1 Hz. Thus, in this Letter,… read more here.

Keywords: injection seeded; frequency; seeded terahertz; wave parametric ... See more keywords