Results 11 to 20 of about 208,195 (300)

PERFORMANCE ANALYSIS FOR DIRECTION-FINDING CIRCULAR ANTENNA ARRAY

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2018
This paper considers circular antenna arrays comprised of symmetrical dipole radiators applied in communication, navigation and monitoring systems. Despite their widespread use, a number of significant issues is underinvestigated.
Svyatoslav V. Ballandovich   +3 more
doaj   +1 more source

Ultra-low profile solar-cell-integrated antenna with a high form factor

open access: yesScientific Reports, 2021
This paper presents an ultra-low-profile copper indium gallium selenide (CIGS) based solar cell integrated antenna with a high form factor. A tiny slot was etched from the solar cell to develop an ultra-low-profile solar-cell-integrated antenna.
Ahmed Ali   +4 more
doaj   +1 more source

Minimization of Antenna Quality Factor [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2017
9 pages, 8 figures, 2 tables, submitted to IEEE ...
Miloslav Capek   +2 more
openaire   +2 more sources

Calibration Proposal for UHF Partial Discharge Measurements at Power Transformers

open access: yesEnergies, 2019
The continuous, non-intermitted service of electrical grids relies on the reliability of their assets, e.g., power transformers. Local insulation defects can result in serve failures such as breakdowns with severe subsequent costs. The prevention of such
Martin Siegel   +10 more
doaj   +1 more source

A Wideband Ultra-Low-Profile Solar Cell–Integrated Antenna [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
In this paper, a wideband ultra-low-profile solar cell–integrated antenna with a high form factor is presented. A copper indium gallium selenide-based solar cell was used for the proposed design.
Ahmed Ali   +6 more
doaj   +1 more source

Quality measurements of an UWB reduced-size CPW-fed aperture antenna [PDF]

open access: yes, 2015
The paper presents a characterization of a compact co-planar waveguide (CPW)-fed slot loaded low return loss planar printed antenna designed for wireless communication and ultra-wideband (UWB) applications. Following a review of the antenna design, which
Ammar, M.   +5 more
core   +1 more source

Q-Factor Bounds for Microstrip Patch Antennas

open access: yesIEEE Transactions on Antennas and Propagation, 2023
Antenna bounds are a useful tool in assessing the feasibility or performance of an antenna design. Microstrip patch antennas are often limited by their relatively narrow bandwidth, and therefore Q-factor is an important design parameter, as it is related to the inverse of the fractional bandwidth.
Ben A. P. Nel   +2 more
openaire   +2 more sources

Characteristics of the Sleeve Dipole Antenna Used for EMC Applications

open access: yesIEEE Access, 2020
This paper presents the antenna factor (AF) of sleeve dipole antennas (SDA) with coaxial-cable balun for electromagnetic compatibility (EMC) applications.
Ki-Chai Kim   +2 more
doaj   +1 more source

A Compact, Bistatic Antenna System with Very High Interport Isolation for 2.4 GHz In-Band Full Duplex Applications

open access: yesInternational Journal of Antennas and Propagation, 2021
This paper presents a compact, dual polarized bistatic (two closely spaced transmit and receive radiators) patch antenna with excellent interport isolation performance.
Haq Nawaz   +3 more
doaj   +1 more source

Measurement of HF monopole antenna array ground wave gain, antenna factor, and antenna noise factor [PDF]

open access: yes2001 IEEE EMC International Symposium. Symposium Record. International Symposium on Electromagnetic Compatibility (Cat. No.01CH37161), 2002
This paper presents a practical way to measure the ground wave gain G/sub GW/, ground wave antenna factor AF/sub GW/, and antenna noise factor F/sub a/(Mon) of monopoles used in BF antenna arrays. It shows measurement results taken from June 1997 to September 1999 at five geographically separated HIT arrays.
openaire   +1 more source

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