Results 31 to 40 of about 149,488 (210)

Through-the-wall detection with gated FMCW signals using optimized patch-like and Vivaldi antennas

open access: yes, 2022
S.1106-1117This paper presents the design and optimization of patch-like antennas for through-the-wall imaging (TTWI) radar applications in the frequency range 0.5-2 GHz.
Ndip, I.   +3 more
core   +1 more source

A Wideband Feed Network for Vivaldi Antenna Arrays

open access: yesInternational Journal of Antennas and Propagation, 2022
A wideband feed network for a Vivaldi antenna array is presented. A limitation of current wideband antenna arrays is the bandwidth of either the feed network or the antenna element.
Natasha Antoinette Hall   +2 more
doaj   +1 more source

Metamaterial Loaded Nine High Gain Vivaldi Antennas Array for Microwave Breast Imaging Application

open access: yesIEEE Access, 2020
In this article, a metamaterial loaded high gain nine antennas based microwave breast imaging system has presented to detect an unwanted tumour in the breast phantom.
Md Tarikul Islam   +4 more
doaj   +1 more source

Antipodal Vivaldi Antenna Arrays Fed by Substrate Integrated Waveguide Right-Angled Power Dividers

open access: yesApplied Sciences, 2018
This paper describes a novel feed system for compact antipodal Vivaldi antenna arrays on a single layer of substrate integrated waveguide (SIW) by using SIW H-plane right-angled power dividers. The proposed antenna systems are composed of a Vivaldi array
Sara Salem Hesari, Jens Bornemann
doaj   +1 more source

Polarization Effect on the Performance of On-Chip Wireless Optical Point-to-Point Links

open access: yesApplied Sciences, 2023
Optical on-chip wireless interconnection is an emerging technology that aims to overcome the communication bottleneck in computing architectures and in which multiple processing units are exploited for data-intensive applications.
Giovanna Calò   +5 more
doaj   +1 more source

A Novel L-Shaped Metalens for Ultra-Wide Band (UWB) Antenna Gain Improvement

open access: yesApplied Sciences, 2023
In this work, a novel metamaterial lens (metalens) is designed and optimized to improve the radiation performance of an antipodal Vivaldi antenna for wideband applications.
Vincenza Portosi   +4 more
doaj   +1 more source

A broadband horizontally polarised omnidirectional antenna with stable radiation patterns

open access: yesThe Journal of Engineering, 2019
A broadband horizontally polarised omnidirectional antenna (HPOA) with stable radiation patterns is proposed. The antenna is composed of two orthogonal broadband HPOA units fed by a wideband power divider.
Zhou Lei, Cui Mantang, Lu Yangyi
doaj   +1 more source

Dielectric and plasmonic vivaldi antennas for on-chip wireless communication [PDF]

open access: yes, 2019
In this paper, different technologies enabling wireless on-chip communication are investigated. In particular, plasmonic Vivaldi antennas coupled to silicon waveguides and all-dielectric Vivaldi antennas are proposed.
Ali Emre Kaplan   +27 more
core   +1 more source

Improvement on a 2 × 2 Elements High-Gain Circularly Polarized Antenna Array

open access: yesInternational Journal of Antennas and Propagation, 2015
A novel antipodal Vivaldi antenna with tapering serrated structure at the edges is proposed. Compared with traditional Vivaldi antennas without serrated structure, the gain of the designed antenna is significantly improved in the desired frequency band ...
C. Liu, A. Yan, C. Yu, T. Xu
doaj   +1 more source

Semicircular Patch-Embedded Vivaldi Antenna for Miniaturized UWB Radar Sensors

open access: yesSensors, 2020
A microstrip-to-slot line-fed miniaturized Vivaldi antenna using semicircular patch embedment is proposed in this study. The conventional Vivaldi antenna has ultrawide bandwidth, but suffers from low gain in the low-frequency band.
Jungwoo Seo, Jae Hee Kim, Jungsuek Oh
doaj   +1 more source

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