Results 21 to 30 of about 301,180 (283)

Applications of optically and electrically driven nanoscale bowtie antennas

open access: yesOpto-Electronic Science, 2022
Optical antennas play an important role in optical field manipulation. Among them, nanoscale bowtie antennas have been extensively studied for its high confinement and enhancement.
Zhongjun Jiang, Yingjian Liu, Liang Wang
doaj   +1 more source

A single‐microstrip‐fed S‐shaped magneto‐electric dipole array with broadband circular polarisation for MMW applications

open access: yesIET Microwaves, Antennas & Propagation, 2021
In this study, a single‐microstrip‐fed S‐shaped magneto‐electric (ME) dipole array with broadband circular polarisation is presented for millimetre wave (MMW) applications. The ME dipole is composed of four S‐shaped patches and metalised via holes.
Changhong Zhang   +4 more
doaj   +1 more source

Design of a Circularly-Polarized UHF Antenna for Partial Discharge Detection

open access: yesIEEE Access, 2020
In this work, a circularly-polarized ultra-high frequency (UHF) partial discharge (PD) antenna is proposed to detect the PD in 0.6 GHz - 1.7 GHz. The proposed PD antenna consists of an Archimedean spiral antenna, a balun, and a cavity.
Seungyong Park, Kyung-Young Jung
doaj   +1 more source

Design and analysis of ultra-wideband antennas for transient field excitations [PDF]

open access: yesAdvances in Radio Science, 2016
This work addresses the design of two ultra-wideband antennas for the application of transient field measurements that are characterized by frequency spectra that typically range from a few MHz to several GHz.
M. Kotzev, M. Kreitlow, F. Gronwald
doaj   +1 more source

An Unbalanced Sinuous Antenna for Near-Surface Polarimetric Ground-Penetrating Radar

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
Sinuous antennas are capable of producing ultra-wideband radiation with polarization diversity. This capability makes the sinuous antenna an attractive candidate for UWB polarimetric radar applications. Additionally, the ability of the sinuous antenna to
Dylan A. Crocker, Waymond R. Scott
doaj   +1 more source

Investigation of Flexible Textile Antennas and AMC Reflectors

open access: yesInternational 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   +3 more
doaj   +1 more source

Printed Quasi-Yagi Antennas Using Double Dipoles and Stub-Loaded Technique for Multi-Band and Broadband Applications

open access: yesIEEE Access, 2018
Double dipoles on a single-layer substrate are utilized to construct a triple-mode printed quasi-Yagi antenna for the multi-band and broadband antenna applications.
Kai Da Xu   +3 more
doaj   +1 more source

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

open access: yesIET 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   +2 more
doaj   +1 more source

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

open access: yesФизика 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

An assessment of interference cancellation applied to BWA [PDF]

open access: yes, 2007
It is a general principle that a communication system should be designed to avoid interference in the first place, either through network planning or with effective radio resource management and medium access control.
Williams, C   +7 more
core   +1 more source

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