Results 21 to 30 of about 202,998 (281)

Design and Analysis of a Series-Fed Aperture-Coupled Antenna Array With Wideband and High-Efficient Characteristics

open access: yesIEEE Access, 2018
In this paper, a new wideband series-fed antenna array is proposed and analyzed. The antenna array structure consists of two antennas with two ports, two antennas with one port, and a wideband 180° coupler.
Mohammad Mahdi Honari   +4 more
doaj   +1 more source

Evaluation of microplasma discharges as active components for reconfigurable antennas [PDF]

open access: yes, 2012
This paper presents an experimental setup for the wideband RF characterization of plasma Micro Hollow Cathode Sustained Discharge (MHCD). This microdischarge is studied as a candidate for integrated active component in antennas, using the change of ...
Pascal, Olivier   +9 more
core   +1 more source

Novel Wideband MIMO Antennas That Can Cover the Whole LTE Spectrum in Handsets and Portable Computers

open access: yesThe Scientific World Journal, 2014
A dual resonant antenna configuration is developed for multistandard multifunction mobile handsets and portable computers. Only two wideband resonant antennas can cover most of the LTE spectrums in portable communication equipment. The bandwidth that can
Mohamed Sanad, Noha Hassan
doaj   +1 more source

A novel technique and soldering method to improve performance of transparent polymer antennas [PDF]

open access: yes, 2010
This article is archived here with permission from IEEE - Copyright @ 2010 IEEEA novel technique and a non-thermal soldering method to improve the performance of AgHT-8 transparent polymer antennas are proposed in this paper.
AbuTarboush, HF   +7 more
core   +1 more source

A time domain spherical near-field measurement facility for UWB antennas employing a hardware gating technique [PDF]

open access: yesAdvances in Radio Science, 2010
A spherical near-field antenna measurement facility employing a time domain hardware gating technique is presented. On-off keyed sinusoidal impulses are used as stimuli requiring wideband antennas with a bandwidth in excess of 400 MHz.
M. D. Blech   +6 more
doaj   +1 more source

Wideband blade monopole antenna with sleeved coaxial feed [PDF]

open access: yes, 2009
A wideband planar monopole antenna requiring a small ground plane is described. Numerical and measured results confirms the antenna has good radiation efficiency and stable omni-directional radiation patterns over an impedance bandwidth of 4.1:1 covering
Morrow, Ivor L.   +7 more
core   +1 more source

Ultra-Wideband Antennas

open access: yes, 2015
The focus of UWB antenna research activity has matured in recent years and currently mainly concentrates on applications such as biomedicine and security. Early UWB antenna designs were driven by the FCC allocation of spectrum in 2002 and focussed on obtaining wide impedance bandwidths with reasonable group delay characteristics.
Ammann, Max   +2 more
openaire   +3 more sources

Dual-Polarized Multi-Resonance Antennas With Broad Bandwidths and Compact Sizes for Base Station Applications

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
In this paper, a novel design method for dual-polarized multi-resonance antennas is presented for base station applications. The radiator of the antenna is configured as cross-dipoles with four thin metal strips connected to the adjacent dipole arms. The
Hai-Han Sun   +3 more
doaj   +1 more source

Zero Index Metamaterial for Designing High-Gain Patch Antenna

open access: yesInternational Journal of Antennas and Propagation, 2013
A planar wideband zero-index metamaterial (ZIM) based on mesh grid structure is studied. It is demonstrated that the real part of the index approaches zero at the wideband covering from 9.9 GHz to 11.4 GHz. Two conventional patch antennas whose operating
Yahong Liu   +3 more
doaj   +1 more source

Ultra-Wideband Angle of Arrival Estimation Based on Angle-Dependent Antenna Transfer Function

open access: yesSensors, 2019
Ultra-wideband radio signals are used in communication, indoor localization and radar systems, due to the high data rates, the high resilience to fading and the fine temporal resolution that can be achieved with a large bandwidth. This paper introduces a
Anton Ledergerber, Raffaello D’Andrea
doaj   +1 more source

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