Results 31 to 40 of about 8,466 (210)

Enabling rural broadband via TV "white space"

, 2012
The use of multiple frequency bands within a wireless network allows the advantages of each band to be exploited. In this paper we discuss how HopScotch, a rural wireless broadband access test bed running in the Scottish Highlands and Islands, uses both ...
Weiss, Stephan, Stephan Weiss, Colin McGuire, Faisal Darbari, Mcguire, Colin, Malcolm R. Brew, Brew, Malcolm Ronald, Darbari, Faisal, Stewart, Robert, Robert W. Stewart   +9 more
core   +1 more source

Novel antenna configurations for wireless broadband vehicular communications [PDF]

, 2010
In this paper, mobile WiMAX trials are analysed to investigate the vehicular down-link performance for a number of on-car antenna configurations. The directionality and optimum polarization of the vehicular antennas are shown to improve both the range ...
Nix, AR, Andrew Nix, George Zaggoulos, David Halls, Zaggoulos, G, Halls, DE   +5 more
core   +1 more source

Investigation of Flexible Textile Antennas and AMC Reflectors

International Journal of Antennas and Propagation, 2012
In this paper, two different methods for fabric characterization are presented: a single frequency method and a broadband method. Felt and denim fabrics are characterized, and patch antennas are designed using these substrates to test both methods ...
M. Mantash, A.-C. Tarot, S. Collardey, K. Mahdjoubi   +3 more
doaj   +1 more source

A circularly polarised multiple input multiple output antenna with single‐sense for sub‐6 GHz 5G applications

IET Microwaves, Antennas & Propagation, 2023
In this study, a compact wideband circularly polarised Multiple Input Multiple Output (MIMO) antenna with the two parasitic elements is proposed. The printed monopole antenna for wideband circular polarisation proposed in authors' previous study is used ...
Zin Mar Phyo, Takafumi Fujimoto, Chai‐Eu Gaun   +2 more
doaj   +1 more source

Comparison of precoding methods for broadband MIMO systems

, 2009
In this paper we investigate non-linear precoding solutions for the problem of broadband multiple-input multipleoutput (MIMO) systems. Based on a broadband singular value decomposition (BSVD) we can decouple a broadband MIMO channel into independent ...
Waleed Al-Hanafy, Stephan Weiss, Alhanafy, W.E.A.E., Weiss, S.   +3 more
core   +1 more source

Linear and flat antenna arrays focused on a broadband signals in radio communications, microwave technologies and non-destructive testing

Физика волновых процессов и радиотехнические системы
Background. The main properties and characteristics of focused antenna systems using narrowband signals are known and generally coincide with the properties of broadband discrete antennas with a symmetric spectrum.
Denis A. Vedenkin
doaj   +1 more source

Antenna systems for broadband wireless access [PDF]

IEEE Communications Magazine, 2002
Broadband wireless access along with evolving mobile Internet and multimedia services are driving the surge of research and development activities for future wireless communication systems. We provide an overview of antenna systems for broadband wireless communications and introduce some of the important issues surrounding them.
Ross D. Murch, Khaled Ben Letaief
openaire   +2 more sources

An Improved Adaptive Frequency Sweep Strategies Based on Asymptotic Waveform Evaluation Technique for Broadband Antenna Simulation

International Journal of Antennas and Propagation
In this paper, we propose an improved adaptive frequency sweep strategy based on the asymptotic waveform evaluation (AWE) technique for simulating broadband antennas across a wide frequency range.
Zhijun Cai, Lingzhi Ren, Shuangbing Liu, Gen Wang, Peng Gao, Tianyuan Zhang, Yuanjie Fang, Haili Zhang   +7 more
doaj   +1 more source

A low‐profile planar end‐fire broadband antenna with wide beamwidth

IET Microwaves, Antennas & Propagation, 2023
A low‐profile planar end‐fire broadband antenna with wide beamwidth is presented. The proposed antenna consists of a grounded coplanar waveguide (GCPW), an antipodal dipole, and a pair of directors.
Hui Xue, ZhiXin Shen, Li Wu, Yingjiao Rong, ShuSheng Peng   +4 more
doaj   +1 more source

Broadband THz Corrugated Bull’s Eye Antennas

IEEE Access, 2021
A 3-dB gain and input impedance bandwidth enhancement technique for THz periodically corrugated metallic antennas, also known as Bull’s Eye antennas, is presented. A novel design that exploits the depth qualities of the corrugations is introduced,
Despoina Kampouridou, Alexandros Feresidis   +1 more
doaj   +1 more source