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   Articles with "frequency tunable" as a keyword



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Frequency-tunable logic gates in graphene nano-waveguides

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recommendations! Published in 2020 at "Photonic Network Communications"

DOI: 10.1007/s11107-020-00881-0

Abstract: In this study, simple basic plasmonic logic gates of XOR, OR, and NOT based on graphene nano-ribbon resonators coupled to properly designed arrangements of nano-waveguides, as input and output logic ports, are demonstrated. The operation… read more here.

Keywords: frequency tunable; tunable logic; gates graphene; graphene nano ... See more keywords

Frequency Tunable Graphene Metamaterial Reflectarray

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recommendations! Published in 2017 at "Wireless Personal Communications"

DOI: 10.1007/s11277-018-5884-1

Abstract: In this paper, the radiation characteristics of frequency tunable graphene based metamaterial reflectarray have been investigated. The unit-cell consists of graphene two gaps split-ring-resonator (SRR) printed on a thick SiO2 substrate. The metamaterial parameters of… read more here.

Keywords: graphene metamaterial; frequency tunable; tunable graphene; graphene ... See more keywords

Frequency-tunable high-Q superconducting resonators via wireless control of nonlinear kinetic inductance

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recommendations! Published in 2019 at "Applied Physics Letters"

DOI: 10.1063/1.5098466

Abstract: Frequency-tunable microwave resonators are in great demand especially in hybrid systems where precise frequency alignment of resonances is required. Here, we present frequency-tunable high-Q superconducting resonators fabricated from thin niobium nitride and niobium titanium nitride… read more here.

Keywords: frequency tunable; frequency; tunable high; high superconducting ... See more keywords

Frequency-tunable single-photon router based on a microresonator containing a driven three-level emitter

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recommendations! Published in 2024 at "Chinese Physics B"

DOI: 10.1088/1674-1056/ad362a

Abstract: We propose a frequency-tunable router of single photons with high routing efficiency, which is constructed by two waveguides mediately linked by a single-mode whispering gallery resonator with a driven three-level emitter. Quantum routing probability in… read more here.

Keywords: driven three; level emitter; frequency; emitter ... See more keywords

Frequency-Tunable Tri-Band Metamaterial-Inspired Antenna

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recommendations! Published in 2025 at "IEEE Access"

DOI: 10.1109/access.2025.3533023

Abstract: A frequency-tunable tri-band metamaterial-inspired antenna is proposed. The antenna consists of patches, interdigital capacitors, and meander lines inductors, and loaded with a split ring resonator. The metamaterial-inspired antenna can provide three band operations at 1.575/2.1/2.6… read more here.

Keywords: metamaterial inspired; inspired antenna; band; frequency tunable ... See more keywords

Silicon Photonic Integrated Optoelectronic Oscillator for Frequency-Tunable Microwave Generation

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recommendations! Published in 2018 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2018.2829823

Abstract: Photonic generation of a frequency-tunable microwave signal based on a silicon photonic integrated optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. The silicon photonic chip includes a high-speed phase modulator (PM), a thermally tunable micro-disk… read more here.

Keywords: photonic integrated; frequency; frequency tunable; silicon photonic ... See more keywords

A Wideband Frequency-Tunable Dipole Antenna Based on Antiresonance Characteristics

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recommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2017.2761395

Abstract: We propose a novel frequency-tunable dipole antenna using varactor diodes and shunt inductors, which provides a much wider frequency tuning bandwidth. First, based on the simple series connection of non-Foster elements, we have predicted required… read more here.

Keywords: frequency; frequency tunable; tunable dipole; dipole antenna ... See more keywords

Frequency-Tunable Absorber Using Liquid Crystal at 140 GHz

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recommendations! Published in 2024 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2023.3345860

Abstract: This letter presents a new class of frequency-tunable sub-terahertz absorbers using liquid crystal (LC) exemplified at 140 GHz. More than 90% absorption of incident EM wave is obtained around the frequency of 140 GHz. The… read more here.

Keywords: using liquid; frequency tunable; absorption; 140 ghz ... See more keywords

C-Band Frequency-Tunable Rectifier Designed by HySIC Concept Utilizing GaAs MMIC and Si RFIC

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recommendations! Published in 2020 at "IEEE Microwave and Wireless Components Letters"

DOI: 10.1109/lmwc.2020.3020083

Abstract: In this letter, a frequency-tunable rectifier in the $C$ -band designed by a hybrid semiconductor integrated circuit (HySIC) concept is proposed. A GaAs monolithic microwave integrated circuit (MMIC) and a Si radio frequency integrated circuit… read more here.

Keywords: hysic concept; tunable rectifier; rfic; frequency ... See more keywords

Frequency-Tunable Dielectric Resonator Antenna Using a Piezoelectric Bending Actuator

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recommendations! Published in 2025 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2024.3520696

Abstract: This article investigates a frequency-tunable dielectric resonator antenna (DRA) using an electromechanical approach. To change the frequency, four movable cylindrical dielectric posts are inserted into the DRA to perturb the field inside DRA. A piezoelectric… read more here.

Keywords: bending actuator; antenna; piezoelectric bending; frequency tunable ... See more keywords

Study on the Effect of Electron Beam Quality on a Continuously Frequency-Tunable 250-GHz Gyrotron

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recommendations! Published in 2018 at "IEEE Transactions on Electron Devices"

DOI: 10.1109/ted.2018.2809559

Abstract: The effect of the electron beam quality, including the variation of the velocity spread, the guiding center radius spread, and the pitch factor when the operating frequency of a 250-GHz TE52 mode continuously frequency-tunable gyrotron… read more here.

Keywords: frequency tunable; inline formula; spread; tex math ... See more keywords