Results 11 to 20 of about 923 (173)
Full‐angle beam scanning leaky‐wave antenna array based on spoof surface plasmon polaritons
IET Microwaves, Antennas & PropagationA design scheme of high‐gain and full‐angle frequency beam scanning leaky wave antenna (LWA) and array is proposed based on spoof surface plasmon polaritons (SSPPs) slow‐wave transmission line (TL) for radar field applications.
Jun Wang +4 more
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An Extremely Low‐Profile Electronically Reconfigurable 1‐D X‐Band Leaky‐Wave Antenna
IET Microwaves, Antennas & PropagationIn this work, a simple analytical model based on the array factor to effect 1‐bit electronic reconfigurability in one‐dimensional 1‐D leaky‐wave antennas (LWAs) is proposed. The model, based on the array factor, outlines the discrete control of the phase
Kevin Kipruto Mutai +2 more
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IET Microwaves, Antennas & PropagationA compact leaky‐wave antenna (LWA) with innovative phase‐shift asymmetric coupling for continuous beam scanning is presented. The antenna utilises a slow‐wave half‐mode substrate integrated waveguide with spoof surface plasmon polaritons (SW‐HMSIW‐SSPP ...
Yiming Zhang, Yuxi Liu, Sailing He
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Optical phased arrays for wavefront shaping in forward scattering media. [PDF]
NanophotonicsAbstract High‐resolution optical imaging in thick tissue samples remains elusive, mainly because of the scattering exhibited by the tissue. With increasing depth, the number of nonscattered photons exponentially decreases – limiting the use of conventional imaging techniques at depth.
Milojković F +5 more
europepmc +2 more sources
Terminal-Matched Topological Photonic Substrate-Integrated Waveguides and Antennas for Microwave Systems. [PDF]
Adv Sci (Weinh)Topological photonic substrate‐integrated waveguide is seamlessly integrated into the traditional microstrip line systems, achieving efficient coupling of both even and odd TP modes with the quasi‐transverse electromagnetic modes of the microstrip lines. This breakthrough minimizes energy losses and opens new possibilities for the practical application
Xu Z +8 more
europepmc +2 more sources
High Gain Periodic 2-D Leaky-Wave Antenna With Backward Radiation for Millimeter-Wave Band
IEEE Open Journal of Antennas and Propagation, 2021 A two-dimensional (2D) periodic leaky-wave antenna (LWA) is proposed in this article. Using dielectric-filled wedge-like waveguide as medium for wave propagation, the quasi-TEM wave inside the guide is leaked through periodic rings of narrow slots ...
Abdullah Attar, Abdel Razik Sebak
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IEEE Access, 2021 In this paper, a theoretical model based on the electric field integration method is proposed to analyse radiation properties of the slotted annular Leaky-Wave Antenna (LWA), which can generate a Circularly Polarized (CP) conical beam or broadside beam ...
Yuchen Ma, Junhong Wang
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IEEE Access, 2023 In this paper, a leaky-wave antenna (LWA) array based on substrate integrated waveguide (SIW) is proposed for generating bilateral secant-distributed radiation pattern, which can cover a wide angular range including broadside direction.
Yulu Zhang, Junhong Wang, Yunjie Geng
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Plasmonic leaky wave antenna based on modulated radius of cylindrical graphene waveguide
AIP Advances, 2021 In this paper, the concept, analysis, and synthesis of a novel plasmonic leaky wave antenna (LWA) based on the modulated radius of a cylindrical graphene waveguide (CGW) at the terahertz band are presented. Devices based on the planar graphene waveguide (
Hadi Soleimani, Homayoon Oraizi
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IEEE Access, 2022 A beam-changeable concentric annular Leaky-Wave Antenna (LWA) array is proposed, which contains two annular LWAs with constant-interval slots. By changing the excitations of the two LWAs, the radiation beam can be changed to different shapes and in ...
Yuchen Ma +4 more
doaj +1 more source