Results 41 to 50 of about 1,081,164 (147)

Broadband Dual-Polarized Single-Layer Reflectarray Antenna With Independently Controllable 1-Bit Dual Beams

IEEE Transactions on Antennas and Propagation, 2020
An independently controllable dual-beam reflectarray antenna is presented using a broadband dual-polarized single-layer 1 bit unit cell. The unit cell independently provides two-state phase compensation for two orthogonally linearly polarized waves.
Jie-Xi Yin, Qun Lou, Haiming Wang, Zhi-Ning Chen, W. Hong   +4 more
semanticscholar   +1 more source

BROADBAND ANTENNAS AND ANTENNA ARRAYS WITH REACTIVE LOADS [PDF]

Радиофизика и электроника, 2018
Subject and Purpose. The results of studies of actual methods for expanding the frequency range of vibrational curved whip and loop antennas, and antenna arrays based on them are presented.
V. V. Ovsyanikov, E. R. Beznosova
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

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

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

Study and miniaturisation of antennas for ultra wideband communication systems [PDF]

, 2009
PhDWireless communications have been growing with an astonishing rate over the past few years and wireless terminals for future applications are required to provide diverse services.
Guo, Lu
core   +2 more sources

Compact circularly polarized metasurface antenna based on characteristic mode analysis

Electronics Letters
This article introduces a novel, single‐layer, low‐profile, circularly polarized metasurface antenna. Through characteristic mode analysis, the optimization of a 3×3 rectangular metasurface structure was performed.
Qing Wang, Xiaopeng Lei, Xiaohai Han, Zhiwei Ge, Zhenya Lei   +4 more
doaj   +1 more source

Azimuth Null-Reduced Radiation Pattern, Ultralow Profile, Dual-Wideband and Low Passive Intermodulation Ceiling Mount Antenna for Long Term Evolution Application

IEEE Access, 2019
An ultralow profile, dual-wideband and low passive intermodulation (PIM) in-building ceilingmount antenna for long term evolution (LTE) distributed antenna system (DAS) application is presented.
Kok Jiunn Ng, Mohammad Tariqul Islam, Adam Alevy, Mohd. Fais Mansor, Choon Chung Su   +4 more
doaj   +1 more source

Compact broadband rectangular microstrip antennas

, 2006
Compact and broadband gap-coupled microstrip antennas using modified variations of the rectangular microstrip antenna (MSA), namely, C-shaped, shorted L-shaped, W-shaped, and square-ring MSAs. are proposed.
Amit A. Deshmukh, KUMAR, G, Girish Kumar, DESHMUKH, AA   +3 more
core   +1 more source

Antenna arrays focused by broadband signals

Физика волновых процессов и радиотехнические системы, 2015
Broadband and ultra-wideband signals are increasingly used in modern antenna technology, and various radio systems. Traditional performance evaluation antennas operating with narrow band signals are not always adequately reflect the characteristics of ...
Yu.E. Sedelnikov, D.A. Vedenkin
doaj