Sensitivity-enhanced fiber strain sensing system based on microwave frequency scanning with the Vernier effect
Sign Up to like & getrecommendations! Published in 2018 at "Optical Fiber Technology"
DOI: 10.1016/j.yofte.2018.04.020
Abstract: Abstract A sensitivity enhanced fiber-optic strain sensing system based on microwave frequency scanning is proposed and experimentally demonstrated. The strain sensor consists of two cascaded fiber rings which are composed of just standard single-mode fibers.… read more here.
Keywords: system; frequency scanning; microwave frequency; frequency ... See more keywords
Frequency scanning non-diffraction beam by metasurface
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4974210
Abstract: A reflective metasurface that can form a non-diffraction beam is proposed in this article. This metasurface is designed based on the artificial admittance modulation surface, and the metallic square patch on the grounded dielectric substrate… read more here.
Keywords: diffraction beam; non diffraction; metasurface; frequency scanning ... See more keywords
Terahertz Transmissive Metasurface for Realizing Beam Steering by Frequency Scanning
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2021.3086589
Abstract: In this paper, in order to avoid the phenomenon that the diffraction waves cover the incident wave in the reflective frequency-scanning antenna system, which causes insufficient utilization of the beam scanning angular scope, a transmissive… read more here.
Keywords: transmissive metasurface; frequency; frequency scanning; beam steering ... See more keywords
Frequency Scanning Conformal Sensor Based on SIW Metamaterial Antenna
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2021.3075556
Abstract: A conformal transverse slotted substrate integrated waveguide (SIW) metamaterial leaky-wave antenna sensor with uniform slots is investigated and analyzed for mmWave sensing applications. Firstly, its planar version is introduced. Then, its performance is compared with… read more here.
Keywords: siw metamaterial; frequency scanning; antenna; metamaterial antenna ... See more keywords
Frequency Scanning Radiation by Decoupling Spoof Surface Plasmon Polaritons via Phase Gradient Metasurface
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2017.2767625
Abstract: On the basis of generalized Snell’s law of reflection, we propose to achieve frequency scanning radiation by decoupling spoof surface plasmon polaritons (SSPPs) from a corrugated metallic strip (CMS). Phase gradient metasurface (PGM) is utilized… read more here.
Keywords: frequency scanning; frequency; scanning radiation; surface ... See more keywords
Wideband Null Frequency Scanning Circular Sector Patch Antenna Under Triple Resonance
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2020.2995459
Abstract: In this article, a novel design approach to triple-resonant, circular sector patch antenna with wideband null frequency scanning functionality is advanced. At first, the operation principle of null frequency scanning functionality is revealed by the… read more here.
Keywords: circular sector; null frequency; frequency scanning; sector patch ... See more keywords
Optimized Frequency Scanning of Nonlinear Devices Applied to Subsynchronous Resonance Screening
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2020.2971434
Abstract: Frequency scanning is a powerful and versatile approach for subsynchronous resonance (SSR) screening in power grids. Among different numerical and analytical frequency scanning techniques, the harmonic injection method is well suited for the scan of… read more here.
Keywords: frequency; frequency scanning; injection; method ... See more keywords
Synthesis and analysis of a planar waveguide array with two-dimensional frequency scanning focused in the Fresnel zone
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Communications Technology and Electronics"
DOI: 10.1134/s1064226917090030
Abstract: A 2D array of radiators with raster frequency scanning focused in the Fresnel zone is presented. The problem of determining the radiator positions for field focusing at a finite distance from the array plane is… read more here.
Keywords: focused fresnel; array; frequency scanning; scanning focused ... See more keywords
Fast algorithm based on the Hilbert transform for high-speed absolute distance measurement using a frequency scanning interferometry method.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.447750
Abstract: Frequency scanning interferometry using state-of-the-art high-speed frequency-swept laser source can be utilized to measure absolute distance on the order of micrometers to centimeters. Current distance demodulation methods based on fast Fourier transform (FFT) or fringe… read more here.
Keywords: speed; hilbert transform; distance; transform ... See more keywords
Rapidly and continuously frequency-scanning opto-electronic oscillator.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.000635
Abstract: An opto-electronic oscillator (OEO) scheme which operates at "chirp oscillation" mode and generates low-phase-noise, frequency-swept microwave is proposed and experimentally demonstrated. This frequency-swept OEO is achieved by embedding a rapidly frequency-scanning microwave filter in an… read more here.
Keywords: frequency scanning; frequency; frequency swept; electronic oscillator ... See more keywords
Precision improvement in frequency scanning interferometry based on suppression of the magnification effect.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.385357
Abstract: Frequency scanning interferometry (FSI) is a promising technique for absolute distance measurement and has been demonstrated in many industrial applications. However, in practice, the measurement precision is limited and sensitive to the variations of the… read more here.
Keywords: scanning interferometry; frequency scanning; frequency; magnification effect ... See more keywords