Results 91 to 100 of about 23,679 (186)

UWB-Based Real-Time Indoor Positioning Systems: A Comprehensive Review

open access: yesApplied Sciences
Currently, the process of tracking moving objects and determining their indoor location is considered to be one of the most attractive applications that have begun to see widespread use, especially after the adoption of this technology in some smartphone
Mohammed Faeik Ruzaij Al-Okby   +3 more
doaj   +1 more source

Ultra-Wideband Antennas for Wireless Communication Applications

open access: yesInternational Journal of Antennas and Propagation, 2019
A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented.
Tale Saeidi   +4 more
doaj   +1 more source

Circuit Model of Curved Ultra Wideband (UWB) Antenna [PDF]

open access: yesMATEC Web of Conferences, 2017
Cet article étudie l'effet des performances de l'antenne incurvée sur les caractéristiques de l'ultra large bande (UWB), en particulier sur la largeur de bande de l'impédance. Une antenne UWB est conçue, après quoi elle est courbée et conformée sur un rayon cylindrique de 150 mm, 120 mm, 90 mm et 60 mm.
openaire   +2 more sources

Novel UWB communication pulse design method

open access: yesTongxin xuebao, 2006
Based on the restriction of federal communications commission (FCC) emission mask, the methods of design- ing impulse pulse waveforms for ultra wideband (UWB) communications was investigated.
LIN Zhi-yuan, WEI Ping
doaj   +2 more sources

Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
The capacity of time-hopping pulse position modulation (PPM) and pulse amplitude modulation (PAM) for an ultra-wideband (UWB) communication system is investigated based on the multipath fading statistics of UWB indoor wireless channels.
T. Aaron Gulliver, Hao Zhang
doaj   +1 more source

Novel ultra-wideband microstrip meandered-loop antenna

open access: yesTongxin xuebao, 2005
A novel meandered-loop ultra-wideband antenna was proposed.The antenna was similar in configuration with a conventional wide-slot antenna,however,by employing meandered-loop structure,not only ultra-wideband performance but also compact size could be ...
LV Wen-jun, CHENG Chong-hu, ZHU Hong-bo
doaj   +2 more sources

Design and Realization of Ultra-Wideband Differential Amplifiers for M-Sequence Radar Applications

open access: yesSensors
Amplification of wideband high-frequency and microwave signals is a fundamental element within every high-frequency circuit and device. Ultra-wideband (UWB) sensor applications use circuits designed for their specific application.
Miroslav Sokol   +2 more
doaj   +1 more source

Ultra-wideband (UWB) in biomedical applications

open access: yes, 2012
The UWB spectrum, when fully utilized, offers potential application in the biomedical field. With the Ultra wide bandwidth, the UWB signal offers subcentimeters resolution which is suitable for biomedical applications, where the body is normally the channel, UWB signal is non-ionizing, and due to the restriction imposed by FCC, operates at a much lower
openaire   +1 more source

A Split Center Resonator FSS-Based Gain Enhancement of CPW Feed UWB Antenna for High Gain UWB Communication

open access: yesIEEE Access
In this manuscript, gain improvement is observed for an ultra-wideband (UWB) antenna. The proposed arrangement is optimally designed for high gain wideband communications.
Bisma Arif   +7 more
doaj   +1 more source

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