Ultra - Wideband ( UWB ) Wireless System
نویسنده
چکیده
Ultra wide bandwidth (UWB) signals are commonly defined as signals that have a large relative bandwidth (bandwidth divided by the carrier frequency) or a large absolute bandwidth .On the other hand, generating, receiving, and processing UWB signals poses significant challenges that require new research in signal generation, transmission, propagation, processing, and system engineering. In the past 20 years, UWB was used for applications such as radar, sensing, military communication and localization. A substantial change occurred in February 2002, when the Federal Communication Commission (FCC) issued a report allowing the commercial and unlicensed deployment of UWB with a given spectral mask for both indoor and outdoor applications in the USA. This wide frequency allocation initiated a lot of research activities from both industry and academia. In recent years, UWB technology has mostly focused on consumer electronics and wireless communications.
منابع مشابه
A Novel Compact Ultra-Wideband Antenna with Single and Double Band Rejection
Band-notch characteristic has been of great interest recently to overcome the electromagnetic interference of Ultra-wideband systems (UWB) with other existing ones. In this paper, we present a novel microstrip-fed antenna with band rejection property appropriate for UWB applications. Band-notch characteristic has been achieved by adding a rectangular resonant element to the ground section. A pr...
متن کاملA New Compact Ultra-wideband Linear Antenna Array for Target Detection Applications
This paper presents a low-cost compact planar microstrip-fed monopole antenna and its four-element array design for ultra-wideband (UWB) wireless communication and target detection applications, respectively, operating in the frequency span of 3 GHz to 11 GHz. A prototype was fabricated and then measured based on optimal parameters. The results of reflection coefficient (S11) and radiation patt...
متن کاملUltra-wideband Radio – an Introduction to the Breakthrough Wireless Technology
Unique properties of Ultra Wideband (UWB) radio, including very high data rate, low power consumption and low cost, make it a promising technology for fourth generation short-range wireless mobile communications. This paper introduces the reader to the UWB technology, to its main properties, capabilities and applications. Furthermore, the current status of regulatory issues of UWB radio transmi...
متن کاملUltra Wideband vs. Narrowband Communications
Ultra wideband (UWB) wireless communication has been the subject of extensive research in recent years due to its potential applications and unique capabilities. However, many important aspects of UWB-based communication systems have not yet been thoroughly examined. The area of narrow band communication is well developed. The objective of this paper is to present Ultra Wideband (UWB) communica...
متن کاملUltra Wideband Antennas – Past and Present
Since the release by the Federal Communications Commission (FCC) of a bandwidth of 7.5GHz (from 3.1GHz to 10.6GHz) for ultra wideband (UWB) wireless communications, UWB is rapidly advancing as a high data rate wireless communication technology. As is the case in conventional wireless communication systems, an antenna also plays a very crucial role in UWB systems. However, there are more challen...
متن کاملUltra Wide and Communication: Practical Applications and Future Aspects
Wireless communication technology has given us convenient ways to transfer information from one point to other anywhere in the world. The recent popularity of wireless networks results in many additional requirements of the system, especially the need of high data rates, demand for high quality multimedia services and the requirement of the greater bandwidth. The Ultra Wideband (UWB) radio comm...
متن کامل