Results 41 to 50 of about 311,742 (212)

A wideband Vivaldi antenna array

open access: yes, 2022
Dissertation (MEng (Electronic Engineering))--University of Pretoria, 2022.The need for wideband antenna arrays have increased due to the number of devices that are connected to wireless networks.

core   +1 more source

A Fully Integrated Filtering Vivaldi Antenna With High Selectivity and Wide Out-of-Band Suppression

open access: yesIEEE Access
This paper introduces a novel filtering approach that employs integrated periodic structures with a conventional Vivaldi antenna to achieve a fully integrated bandpass filtering antenna.
Ahmad Emadeddin, B. L. G. Jonsson
doaj   +1 more source

A Compact Vivaldi Shaped Partially Dielectric Loaded TEM Horn Antenna for UWB Communication

open access: yesInternational Journal of Antennas and Propagation, 2014
Ultrawideband (UWB) antennas are of huge demand and Vivaldi antennas as well as the TEM horn antennas are good candidates for UWB applications as they both have relatively simple geometry and high gain over a wide bandwidth.
Mustafa İlarslan   +4 more
doaj   +1 more source

Characteristics of the Radiating Element of a Planar Vivaldi Antenna Array with Improved Bandwidth

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника
Introduction. The conventional approach to extending the operating frequency band of Vivaldi antenna arrays consists in increasing the radiating element length. However, this inevitably leads to an increase in the mass of the entire array, and, therefore,
I. V. Bobkov, Yu. V. Yukhanov
doaj   +1 more source

Low-Reflection Cross Section and High-Isolation 2x2 Broadband Antenna Array for the MIMO Measurement System

open access: yesMATEC Web of Conferences, 2018
The author of this paper explored Vivaldi [1] [2] line theory and technology and used it as a basis to propose a Vivaldi antenna array to replace a single Vivaldi antenna.
Lee Wen-Yu, Lin Hsin-Piao, Lin Ding-Bing
doaj   +1 more source

Modes of Decolonial and Anti‐Racist Intervention in the Art World: Two Cases From Brazil and Argentina

open access: yesBulletin of Latin American Research, Volume 45, Issue 4, October 2026.
ABSTRACT I explore two exhibitions that were curated from a decolonial and anti‐racist position by Indigenous Brazilian and non‐white working‐class Argentine artists: Véxoa: Nós sabemos (Véxoa: We Know) and ¿Qué necesitan aprender los museos? (What Do Museums Need to Learn?).
Peter Wade
wiley   +1 more source

Breast Diagnostic Tumor Using Compact Butterfly-Shaped Antenna Signals for Medical Sensor Applications

open access: yesResults in Engineering
This manuscript discusses detecting breast cancers for early intervention and increasing the chances of saving the patient’s existence using a compact wideband Vivaldi antenna.
Hiwa Taha Sediq   +3 more
doaj   +1 more source

César González's Anti‐Racist Aesthetic Praxis at the Intersection of Race, Class and Space in Argentina

open access: yesBulletin of Latin American Research, Volume 45, Issue 4, October 2026.
ABSTRACT This article examines the aesthetic praxis of Argentine author and filmmaker César González as an example of anti‐racist art that challenges the often‐sidelined racism faced by residents of poor neighbourhoods (known as villeros), who are frequently presented as Argentina's Other.
Ignacio Aguiló, Ana Vivaldi
wiley   +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

Effects of Classical Music on Behavioral and Physiological Stress Markers in Socially Isolated Prairie Voles

open access: yesAnnals of the New York Academy of Sciences, Volume 1563, Issue 1, September 2026.
Social isolation contributes to behavioral, physiological, and neuroendocrine dysfunction. In prairie voles, classical music exposure significantly reduced validated anxiety‐ and depression‐related behavioral responses and improved cardiac and endocrine measures as a function of chronic social isolation, with minor sex differences.
Yessenia Chavez   +10 more
wiley   +1 more source

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