Results 21 to 30 of about 921 (256)

Directivity enhancement and characteristics of space‐wave, leaky‐wave and creeping‐waves for an impedance cylinder coated with dielectric

open access: yesIET Microwaves, Antennas & Propagation, 2021
The dielectric‐coated impedance cylinder configuration is investigated thoroughly with respect to the space‐wave, leaky‐wave and creeping‐wave excitations for all source polarizations.
Mahesh Singh   +2 more
doaj   +1 more source

Design of leaky-wave antennas with transverse slots for end-fire radiation with optimized radiation efficiency [PDF]

open access: yesAdvances in Radio Science, 2019
A substrate integrated waveguide (SIW) with transverse slots on the top plane can be used to design an effective leaky-wave antenna with good frequency beam-scanning and platform integration capability.
T. Vaupel, C. Löcker
doaj   +1 more source

Investigation of the Leaky-Wave Characteristics of a Cylindrical Dielectric Rod Using the Coefficient Matrix of the System of Characteristic Equations and Davidenko’s Method [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2021
An open dielectric waveguide includes both guided propagating modes within the waveguide and radiating and evanescent modes that propagate transversely outside the waveguide.
Ersoy Kelebekler
doaj   +1 more source

Slotted Waveguide Circularly Polarized Leaky Wave Antenna With Improved Efficiency at W-Band

open access: yesIEEE Access, 2023
This article presents a high-efficiency circularly polarized slotted waveguide leaky wave antenna for the W band frequency range. The wall thickness of the slotted waveguide leaky wave antenna containing the radiating slots is tuned to optimize the ...
Shilpi Singh   +2 more
doaj   +1 more source

Voltage controlled duplexer-integrated leaky-wave antenna using Magnet-less Non-reciprocal Metamaterial (MNM)

open access: yesJournal of Electrical Systems and Information Technology, 2017
A novel voltage controlled duplexer-integrated leaky-wave antenna, consisting of an array of traveling-wave resonant particle by metal ring resonator with variable capacitance and uni-lateral component is proposed, analysed, and measured.
Yuhi Yokohama, Toshiro Kodera
doaj   +1 more source

Sidelobe Suppression in Array-Pattern Synthesis Using Periodic Leaky-Wave Antenna and Binomial Array

open access: yesModelling and Simulation in Engineering, 2020
This paper presents the conception and realization of a 2D antenna array using periodic leaky-wave antenna (PLWA) and the binomial array (BA) at 6 GHz as the application of WLAN. The series array of periodic leaky-wave antenna was provided by an array of
Hicham Aziz   +3 more
doaj   +1 more source

High Gain Periodic 2-D Leaky-Wave Antenna With Backward Radiation for Millimeter-Wave Band

open access: yesIEEE 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
doaj   +1 more source

A New Kind of Circular Polarization Leaky-Wave Antenna Based on Substrate Integrated Waveguide

open access: yesInternational Journal of Antennas and Propagation, 2015
A new kind of circular polarization leaky-wave antenna with N-shaped slots cut in the upper side of substrate integrated waveguide (SIW) is investigated and presented.
Chong Zhang   +4 more
doaj   +1 more source

Single-Side-Scanning Surface Waveguide Leaky-Wave Antenna Using Spoof Surface Plasmon Excitation

open access: yesIEEE Access, 2018
A surface waveguide (SWG) leaky-wave antenna featuring directional single-side beam scanning capability is presented. A novelty of the design is that transition design utilizes the spoof surface plasmon (SSP) as an intermedia to feed the SWG, which ...
Shangkun Ge   +4 more
doaj   +1 more source

A Multi-Frequency Patch Antenna With Double Sided Parallel Strip Line Periodic Structure

open access: yesIEEE Access, 2020
A multi-frequency patch antenna with double-sided parallel-strip line (DSPSL) periodic offset structure is proposed. The designed antenna consists of a simple rectangular patch as well as an embedded one-dimensional DSPSL periodic offset structure, which
Kebin Liu   +5 more
doaj   +1 more source

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