Results 41 to 50 of about 942 (128)

Wideband Omnidirectional Slotted‐Waveguide Antenna Array Based on Trapezoidal Slots

open access: yesInternational Journal of Antennas and Propagation, Volume 2019, Issue 1, 2019., 2019
This manuscript presents a novel approach for designing wideband omnidirectional slotted‐waveguide antenna arrays, which is based on trapezoidal‐shaped slots with two different electrical lengths, as well as a twisted distribution of slot groups along the array longitudinal axis. The trapezoidal section is formed by gradually increasing the slot length
Hugo Rodrigues Dias Filgueiras   +5 more
wiley   +1 more source

Calibration of Free-Space Radiometric Partial Discharge Measurements [PDF]

open access: yes, 2017
The present study addresses the calibration of four types of partial discharge (PD) emulators used in the development of a PD Wireless Sensor Network (WSN).
Atkinson, R   +7 more
core   +1 more source

Experimental Analysis of Total Radiated Power by the Open Energy Meter 2G

open access: yesJournal of Electrical and Computer Engineering, Volume 2019, Issue 1, 2019., 2019
The company e‐distribuzione S.p.A (the main Italian electricity distributor) has started in 2017 the massive installation of the second‐generation smart electrical energy meters. These smart meters have several new features. In particular, the communication functions have been improved to enhance the reliability of the communication towards the ...
M. Briccola   +7 more
wiley   +1 more source

Intelligent vehicle scheduling in open-pit mines based on 5G antenna and improved Dijkstra algorithm

open access: yesGong-kuang zidonghua
Complex terrains such as deep pits and high slopes in open-pit mines cause physical signal blockage and multipath fading. Furthermore, existing path-planning algorithms tend to result in unstable vehicle trajectories or congestion due to local optima ...
CHEN Xiaolei, CHEN Liufang, WANG Jie
doaj   +1 more source

Integrated Broadband Bowtie Antenna on Transparent Silica Substrate

open access: yes, 2016
The bowtie antenna is a topic of growing interest in recent years. In this paper, we design, fabricate, and characterize a modified gold bowtie antenna integrated on a transparent silica substrate.
Chen, Ray T.   +6 more
core   +1 more source

Capacitors can radiate - some consequences of the two-capacitor problem with radiation

open access: yes, 2003
We fill a gap in the arguments of Boykin et al [American Journal of Physics, Vol 70 No. 4, pp 415-420 (2002)] by not invoking an electric current loop (i.e.
Bateman C.   +4 more
core   +2 more sources

The effect of fibre treatment on water absorption and mechanical properties of buri palm (Corypha utan) fibre reinforced epoxy composites [PDF]

open access: yes, 2020
Over the past century, there has been a dramatic increase in natural fibre composites in which natural fibre has served as reinforcement in polymer.
Jaafar, J.   +6 more
core   +1 more source

Considerations for the Design of UWB Antennas for Mobile and Consumer Equipment

open access: yes, 2005
This paper presents some considerations on the design, characterization and optimization of UWB (Ultra WideBand) antennas for consumer communication equipment.
Manteuffel, Dirk
core   +1 more source

Pseudospin S=1 formalism and skyrmion-like excitations in the three body constrained extended Bose-Hubbard model [PDF]

open access: yes, 2014
We have focused in the paper on the most prominent and intensively studied S=1 pseudospin formalism for extended bosonic Hubbard model (EHBM) with truncation of the on-site Hilbert space to the three lowest occupation states n = 0, 1, 2.
Moskvin, A. S.
core   +1 more source

Measurements of Antenna Parameters in GTEM Cell

open access: yesJournal of Communications Software and Systems, 2010
The paper presents the method for measuring parameters (gain, antenna factor, impedance and radiation pattern) of small antennas in GTEM cell, which is a novel method and environment for antenna measurements.
Zlatko Živković, Antonio Šarolić
doaj  

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