Results 151 to 160 of about 519,749 (200)
Some of the next articles are maybe not open access.
Ultra-Wideband (UWB) Filter With WLAN Notch
2006 European Microwave Conference, 2006Strong narrowband signals like WLAN links may severely disturb UWB communication or sensor systems. In some cases, filtering out the respective frequency bands may therefore be of interest. This contribution proposes an additional notch filter within the passband of a broadband filter normally used to tailor the UWB spectrum. To this extent, a resonant
Wolfgang Menzel, Peter Feil
openaire +1 more source
Ultra-wideband (UWB) communications systems: an overview
The 3rd International IEEE-NEWCAS Conference, 2005., 2005This paper presents an overview of the ultra-wideband (UWB) technology for wireless communications systems. Following a brief review of the UWB basic principles, the characteristics of application specific UWB wireless systems are described. Design principles and challenges of UWB wireless systems, with an emphasis on monolithic implementations are ...
T.K.K. Tsang, M.N. El-Gamal
openaire +1 more source
An ultra-Wideband uniplanar antenna for UWB systems
2008 International Radar Symposium, 2008The development of a new compact uniplanar antenna operating from 3.1 to 10.6 GHz for ultra-Wideband (UWB) systems is presented. The antenna overcomes potential problems caused by the coupling between the feed and antenna and meets the requirements for UWB applications, such as ultra-wide bandwidth, reasonable efficiency, satisfactory radiation ...
Meng Mao, Cam Nguyen
openaire +1 more source
Ultra wideband (UWB): technology, design and applications
IET International Communication Conference on Wireless Mobile & Computing (CCWMC 2009), 2009Summary form only given. In this presentation, Ultra Wideband (UWB) systems operating in 3.1-4.5 GHz band are shown to have interesting properties within dense multipath channels and metallic structures. First the IEEE standard UWB channel model is presented and discussed, then our combined deterministic-statistical channel modeling method is shown to ...
B. Honary, B. Memari
openaire +1 more source
Recent Development of Ultra-Wideband (UWB) Filters
2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007This paper aims to reports the recent progress in developing UWB filters. Several advanced UWB filter structures are demonstrated with electromagnetic (EM) simulated and experimental results.
Jia-Sheng Hong, Keren Li
openaire +1 more source
Ultra-wideband (UWB) Radios for Spatial Intelligence
GetMobile: Mobile Computing and CommunicationsLength is one of the seven fundamental physical quantities. For several centuries we have measured distances using calibrated physical objects, and more recently using light, sound, and radio waves. These measurements and the tools we use have enabled advances in several different domains, from the construction industry to space travel, from GPS ...
openaire +1 more source
Ultra Wideband Funktechnik (UWB) [PDF]
Um eine Vielzahl von Funkstrecken störungsfrei betreiben zu können, sind eine komplexe Technik und ein gut geplantes Frequenzmanagement zwingend notwendig. Da wird es Zeit, über Alternativen nachzudenken. Eine dieser Alternativen ist die Ultra Wideband-Technik - kurz UWB - mit der eine neue Ära der drahtlosen Mikrofonübertragung möglich werden kann ...
openaire
Ultra Wideband (UWB) Receiver for Radio Astronomy
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019Advancements in receiver technology have been crucial for probing radio-frequency signals from distant sources. The survey speed of a radio telescope represents a critical constraint on astronomical observations and can be expressed in broad terms as the product of bandwidth, field of view and squared sensitivity [1].
K. Jeganathan +18 more
openaire +1 more source
Transmission and Reception by Ultra-Wideband (UWB) Antennas
IEEE Antennas and Propagation Magazine, 2006Broadband antennas are very useful in many applications because they operate over a wide range of frequencies. The objective of this paper is to study the transient responses of various well-known antennas over broad frequency ranges. As such, the phase responses of these antennas as a function of frequency are of great interest.
D. Ghosh +5 more
openaire +1 more source
RF Aspects in Ultra-WideBand (UWB) Technology
2012The chapter focuses on radio frequency aspects in UWB and is organised into four sections: the first section briefly summarises the main aspects about regulation issues of UWB technology; the second section describes antenna design and characterisation; the third section discusses UWB channel modelling and measurements; the last section describes ...
Adamiuk, G. +8 more
openaire +2 more sources

