Results 31 to 40 of about 97,491 (337)
Improving directional radiation quality based on a gradient amplitude acoustic leaky wave antenna
New Journal of Physics, 2019 In this work, we show how to modify radiation amplitude with a leaky wave antenna to improve the quality of sound radiation. The designed gradient amplitude leaky wave antenna consists of a straight pipe with periodically loaded membranes, open channels ...
Jun Lan +4 more
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Topological One-Way Edge States in an Air-Hole Honeycomb Gyromagnetic Photonic Crystal
Frontiers in Physics, 2022 Topological one-way edge states have attracted increasing attention because of their intriguing fundamental physics and potential applications, particularly in the realm of photonics. In this paper, we present a theoretical and numerical demonstration of
Chaoqun Peng +4 more
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Efficient leaky-wave antennas at terahertz frequencies generating highly directional beams
Applied Physics Letters, 2020 Due to their frequency-dependent angular emission, leaky-wave antennas have been recently introduced in the terahertz band to tackle many of the challenges associated with THz wireless communications. Most previous works have exploited conventional leaky-
H. Guerboukha +6 more
semanticscholar +1 more source
IEEE Access, 2018 Modern terahertz (THz) receiver used for radio astronomy is aimed at developing high integrated system. However, various THz integrated devices, such as quantum cascade lasers and chip antennas, exist weaknesses of poor radiation quality and beam ...
Jiang-Qiao Ding +3 more
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IET Microwaves, Antennas & Propagation, 2022 In this work, a wide‐angle forward to backward scanning wideband leaky‐wave antenna (LWA) based on the microstrip spoof surface plasmon polaritons (SSPPs) transmission line (TL) is proposed.
Somia Sharma +3 more
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Low-Dispersive Leaky-Wave Antennas for mmWave Point-to-Point High-Throughput Communications
IEEE Transactions on Antennas and Propagation, 2020 In this article, we present two efficient leaky-wave antennas (LWAs) with stable radiation pattern, operating at 60 GHz. Both antennas exhibit attractive properties such as significantly reduced beam-squint, low loss, low sidelobes, high directivity, and
O. Zetterstrom +4 more
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Technologies for Near-Field Focused Microwave Antennas
International Journal of Antennas and Propagation, 2017 This paper provides a review spanning different technologies used to implement near-field focused antennas at the microwave frequency band up to a few tens of GHz: arrays of microstrip patches and printed dipoles, arrays of dielectric resonator antennas,
Paolo Nepa +3 more
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Applications of AMC-based impedance surfaces
EPJ Applied Metamaterials, 2018 The recent and major enhancements of artificial magnetic conductor (AMC) and their applications namely RCS reduction, low-profile antennas and holographic leaky wave antennas are reviewed.
Balanis Constantine A. +4 more
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DESIGN AND FABRICATION OF ULTRA-WIDEBAND LEAKY WAVE METAMATERIAL ANTENNAS [PDF]
Jordanian Journal of Computers and Information Technology, 2019 This article is devoted to the design, analysis and fabrication of conventional and metamaterial leaky wave antennas. The effects of utilizing composite right/left handed structure on bandwidth, gain and beam steering are reflected.
Mohamed Fathy Abo Sree +5 more
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IEEE Transactions on Antennas and Propagation, 2020 A composite right/left-handed (CRLH) leaky-wave antenna (LWA) can effectively scan the radiation beam from backward-to-forward direction. However, in most cases, a large range of frequency sweep is required to achieve a wide-angle beam scan, which could ...
D. Karmokar +3 more
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