Results 21 to 30 of about 136,904 (200)

Hidden Antennas for Vehicles [PDF]

, 2002
The introduction of new telematics and broadcast systems into vehicles has led to a requirement for multiple antennas that can be hidden from view.
Langley, Richard J., Batchelor, John C.
core   +1 more source

Adaptive multi-channel MAC protocol for dense VANET with directional antennas [PDF]

, 2009
Directional antennas in Ad hoc networks offer more benefits than the traditional antennas with omni-directional mode. With directional antennas, it can increase the spatial reuse of the wireless channel.
Xie, Xu, Yang, Shaoshi, Lv, Tiejun, Benxiong Huang, Xu Xie, Shaoshi Yang, Tiejun Lv, Huang, Benxiong   +7 more
core   +1 more source

Wideband Low-Profile Luneburg Lens Based on a Glide-Symmetric Metasurface

IEEE Access, 2020
This paper presents a two-dimensional low-profile Luneburg lens that is designed by using a glide-symmetric metasurface. The entire lens consists of two mirrored metal plates with periodic metal pins, and the pins on one plate are glided exactly a half ...
Fangfang Fan, Mingbo Cai, Jiachen Zhang, Zehong Yan, Jinxiao Wu   +4 more
doaj   +1 more source

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

, 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, Pizarro, Francisco, O. Pascal, Liard, Laurent, T. Callegari, R. Pascaud, Callegari, Thierry, L. Liard, Pascaud, Romain, F. Pizarro   +9 more
core   +1 more source

A Dual-Band MIMO Antenna With Enhanced Isolation for 5G Smartphone Applications

IEEE Access, 2019
In this paper, a compact dual-band MIMO antenna array for 5G smartphone applications is proposed. The MIMO antenna consists of eight folded monopole antennas operating at 3.45-GHz band (3300~3600MHz).
Wen Jiang, Yangqiang Cui, Bo Liu, Wei Hu, Yan Xi   +4 more
doaj   +1 more source

A Miniaturized Dual-Band Frequency Selective Surface with Enhanced Capacitance Loading for WLAN Applications

Sensors
This article presents a miniaturized dual-band frequency selective surface (FSS) based on capacitance-enhancing technique for RF shielding applications. The FSS incorporates two independent corner-modified square loop (CMSL) elements realized on a lossy ...
Muhammad Idrees, Sai-Wai Wong, Abdul Majeed, Shu-Qing Zhang, Yejun He   +4 more
doaj   +1 more source

Design of Wideband Circularly Polarized Crossed-Dipole Antenna Using Parasitic Modified Patches

IEEE Access, 2019
In this paper, a wideband circularly polarized (CP) crossed-dipole antenna is presented by using parasitic modified patches. Four polygonal metal patches are sequentially rotated around the crossed dipoles.
Zhipeng Zhao, Yapeng Li, Meng Xue, Le Wang, Zhaoyang Tang, Yingzeng Yin   +5 more
doaj   +1 more source

Design of a Miniaturized and Polarization-Independent Frequency-Selective Surface for Targeted EMI Shielding

Applied Sciences
In this article, a miniaturized frequency-selective surface (FSS)-based electromagnetic shield is investigated for EMI mitigation in the X-band. The FSS comprises a convoluted conducting loop designed over an FR-4 substrate.
Muhammad Idrees, Yejun He, Youquan Wen, Abdul Majeed   +3 more
doaj   +1 more source

Wideband circularly polarised antenna array with isoflux pattern

IET Microwaves, Antennas & Propagation, 2021
The authors present a wideband circularly polarised antenna array consisting of a 10‐element ellipse dipole antenna and a feed network. A metal pillar is vertically loaded at the end of each ellipse dipole arm to extend the current path, thereby reducing
Fanchao Zeng, Zhi‐Ya Zhang, Yang Feng, Shaoli Zuo, Chengbin Zhang, Li Wang   +5 more
doaj   +1 more source

Sector Unit-Cell Methodology for the Design of Sub-6 GHz 5G MIMO Antennas

IEEE Access, 2022
A novel methodology based on the sectorization of multiple-port cavities with azimuthal symmetry into sector unit cells is presented to design 5G multiple-input multiple-output (MIMO) sub-6 GHz antennas.
Jaime Molins-Benlliure, Marta Cabedo-Fabres, Eva Antonino-Daviu, Miguel Ferrando-Bataller   +3 more
doaj   +1 more source