Results 21 to 30 of about 894 (260)

A Miniaturized Full-Ground Dual-Band MIMO Spiral Button Wearable Antenna for 5G and Sub-6 GHz Communications

open access: yesSensors, 2023
A detachable miniaturized three-element spirals radiator button antenna integrated with a compact leaky-wave wearable antenna forming a dual-band three-port antenna is proposed.
Tale Saeidi   +2 more
doaj   +1 more source

Performance of a Planar Leaky-Wave Slit Antenna for Different Values of Substrate Thickness [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2017
This paper presents the performance of a planar, low-profile, and wide-gain-bandwidth leaky-wave slit antenna in different thickness values of high-permittivity gallium arsenide substrates at terahertz frequencies.
Niamat Hussain   +2 more
doaj   +1 more source

45° Linearly Polarized and Circularly Polarized High-Scanning-Rate Leaky-Wave Antennas Based on Slotted Substrate Integrated Waveguide

open access: yesIEEE Access, 2020
A class of 45° linearly polarized and circular polarized high scanning rate leaky wave antennas are proposed in this paper, which is based on slow-wave substrate integrated waveguide structure.
Jianwen Zhong   +2 more
doaj   +1 more source

Plasmonic leaky wave antenna based on modulated radius of cylindrical graphene waveguide

open access: yesAIP 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
doaj   +1 more source

Frequency Reconfigurable Beam Scanning Squarely Modulated Reactance Surface Antenna With Period and Surface Reactance Control

open access: yesIEEE Access, 2023
In this study, a novel antenna design is proposed for designing a frequency-reconfigurable wide-angle beam scanning antenna and applied to a squarely modulated reactance surface leaky wave antenna.
Doohyun Yang, Sangwook Nam
doaj   +1 more source

Analysis of micro-slotline leaky wave antenna with FDTD

open access: yesTongxin xuebao, 2006
The FDTD method modeled the micro-slotline leaky wave antenna successfully.The traveling wave of micro-slotline leaky-wave antenna in leaky region had been shown up with FDTD method.A new and effective equation was proposed,to calculate the complex ...
LI Yuan-xin, LONG Yun-liang
doaj   +2 more sources

Acoustic Leaky-Wave antenna

open access: yes2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, 2014
In the last years, the number of studies carried out in the field of acoustic metamaterials has significantly increased. In year 2009, our group proposed a concept of acoustic composite right/left hand transmission line (CRLH-TL) metamaterial, consisting of a waveguide periodically loaded with membranes along the duct, and transverse open channels ...
Esfahlani Hussein   +2 more
openaire   +2 more sources

High Efficiency and Broadband Microstrip Leaky-Wave Antenna

open access: yesActive and Passive Electronic Components, 2008
A novel layout of leaky-wave antennas based on tapered design has been proposed and investigated. The new tapered leaky-wave antenna (LWA) was designed running a simple procedure which uses an FDTD code, and using a suitable metal walls down the ...
Onofrio Losito
doaj   +1 more source

Improving directional radiation quality based on a gradient amplitude acoustic leaky wave antenna

open access: yesNew 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
doaj   +1 more source

Design of a Polarization-Diverse Planar Leaky-Wave Antenna for Broadside Radiation

open access: yesIEEE Access, 2019
The design of a K-band radial leaky-wave antenna is presented for polarization diversity applications. The antenna structure is constituted by an annular, radially periodic, and metallic strip grating printed on top of a single-layer grounded dielectric ...
Davide Comite   +6 more
doaj   +1 more source

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