Results 41 to 50 of about 8,466 (210)

Multimode and Multiband Microstrip Antennas [PDF]

, 2007
This thesis describes original work on the broadband and multiband matching of microstrip patch antennas. Microstrip patch antennas suffer from many constraints on their performance. One major restriction is their narrow impedance bandwidth.
Abunjaileh, Alaa Ibrahim
core  

Neural Network Characterization of Reflectarray Antennas [PDF]

, 2012
An efficient artificial neural network (ANN) approach for the modeling of reflectarray elementary components is introduced to improve the numerical efficiency of the different phases of the antenna design and optimization procedure, without loss in ...
Mussetta, Marco, Paola Pirinoli, A. Freni, Freni, A., Marco Mussetta, Freni, Angelo, Pirinoli, Paola, Angelo Freni, Angelo Freni   +8 more
core   +1 more source

Properties and technical applications of antenna arrays focused on a broadband signal

Физика волновых процессов и радиотехнические системы
Background. Currently, antenna arrays focused in the near-radiated field zone are being actively studied. The basic properties and characteristics of focused antenna systems using narrowband signals are known.
Denis A. Vedenkin, Yuri E. Sedelnikov
doaj   +1 more source

Design of bandwidth enhancement circular polarisation microstrip antenna loaded with sunflower‐shaped metasurface

IET Microwaves, Antennas & Propagation
A circular polarised (CP) microstrip antenna loaded with sunflower‐shaped metasurface (SSM) to enhance the bandwidth using characteristic mode analysis is proposed in this communication.
Xiumei Shen, Chuanyun Zhang, Yingzeng Yin, Xiangjiang Zhong   +3 more
doaj   +1 more source

A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix [PDF]

, 2004
In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by cosine-modulation, and the broadside ...
Liu, Wei, Weiss, S., Liu, W., Hanzo, L.
core   +1 more source

Dual-Band Wearable Metallic Button Antennas and Transmission in Body Area Networks [PDF]

, 2010
A dual-band metallic antenna with the appearance of a button on a pair of jeans for use with wearable computer networks, emergency rescue scenarios and future wireless medical applications is presented.
Miller, J.A., Sobhy, Mohammed, Sanz-Izquierdo, Benito, Batchelor, John C.   +3 more
core   +1 more source

Design of Broadband Aperture-Coupled Microstrip Antenna Arrays With Differential Feeding

IEEE Access
This paper proposes the design of broadband microstrip antennas fed by differential microstrip lines. The designed broadband antennas are composed of two capacitively coupled rectangular stacked patches excited through a dog-bone shaped aperture by short-
Ignacio M. Delgado-Lozano, Armando Fernandez-Prieto, Vicente Losada, Rafael R. Boix, Francisco Medina   +4 more
doaj   +1 more source

Experimental verification of broadband antennas loaded with metamaterials

, 2015
The intrinsic frequency dispersion has been usually considered as a relevant drawback of metamaterials, limiting their application to narrowband microwave components.
BILOTTI, FILIBERTO, A Toscano, VERRENGIA, ANDREA, MONTI, ALESSIO, Muha, D., TROTTA, FABRIZIO, F. Trotta, TOSCANO, ALESSANDRO, A. Verrengia, D. Ramaccia, F. Bilotti, RAMACCIA, DAVIDE, BARBUTO, MIRKO, A. Monti, D. Muha, M. Barbuto, Hrabar, S., S. Hrabar   +17 more
core   +1 more source

Comparison of an electrically-small planar antenna array with a conventional monopole array [PDF]

, 2002
A new type of linear array is proposed which utilises annular slot antennas operating in the 'DC' mode. These conformal elements are electrically-small and have wire-monopole-like radiation patterns.
Rogers, PR, Fletcher, PN, Craddock, IJ, Hilton, GS   +3 more
core   +1 more source

Compact broadband high‐gain dielectric rod antenna with air–dielectric hybrid design for millimetre‐wave applications

IET Microwaves, Antennas & Propagation
This paper presents a compact, broadband, high‐gain dielectric rod antenna. By utilising an air–dielectric hybrid method for designing the radiating and matching sections, gradual variations in the average equivalent permittivity along the rod are ...
Yuwei Zhang, Shu Lin, Zhenyu Xu, Xingqi Zhang, Xinyue Zhang   +4 more
doaj   +1 more source