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uwb

超寬帶(UltraWideBand,uwb)技術是一種無線載波通信技術,它不采用正弦載波,而是利用納秒級的非正弦波窄脈沖傳輸數據,因此其所占的頻譜范圍很寬。
  • Radio System Design for Telecommunication

    This book provides the essential design techniques for radio systems that operate at frequencies of 3 MHz to 100 GHz and which will be employed in the telecommunication service. We may also call these wireless systems, wireless being synonymous with radio, Telecommunications is a vibrant indus- try, particularly on the ‘‘radio side of the house.’’ The major supporter of this upsurge in radio has been the IEEE and its 802 committees. We now devote ? . an entire chapter to wireless LANs WLANs detailed in IEEE 802.11. We also now have subsections on IEEE 802.15, 802.16, 802.20 and the wireless ? . ? metropolitan area network WMAN . WiFi, WiMax,, and uwb ultra wide- . band are described where these comparatively new radio specialties are demonstrating spectacular growth.

    標簽: Telecommunication Design System Radio for

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • Silicon-Based+RF+Front-Ends

    Ultra-wideband (uwb) technology enables high data-rate short-range communica- tion, in excess of hundredmegabit-per-secondsand up to multi-gigabit-per-seconds, over a wide spectrum of frequencies, while keeping power consumption at low lev- els. This low power operation results in a less-interfering co-existence with other existed communication technologies (e.g., UNII bands). In addition to carrying a huge amount of data over a distance of up to 230 feet at very low power (less than 0.5mW), the uwb signal has the ability to penetrate through the doors and other obstacles that tend to reflect signals at more limited bandwidths and higher power densities.

    標簽: Silicon-Based Front-Ends RF

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • Ultra Wideband - Circuits

    Recent advances in wireless communication technologies have had a transforma- tive impact on society and have directly contributed to several economic and social aspects of daily life. Increasingly, the untethered exchange of information between devices is becoming a prime requirement for further progress, which is placing an ever greater demand on wireless bandwidth. The ultra wideband (uwb) system marks a major milestone in this progress. Since 2002, when the FCC allowed the unlicensed use of low-power, uwb radio signals in the 3.1–10.6GHz frequency band, there has been significant synergistic advance in this technology at the cir- cuits, architectural and communication systems levels. This technology allows for devices to communicate wirelessly, while coexisting with other users by ensuring that its power density is sufficiently low so that it is perceived as noise to other users.

    標簽: Circuits Wideband Ultra

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • Ultra Wideband Signals and Systems

    In the two years since this book was first published, ultra wideband (uwb) has advanced and consolidated as a technology, and many more people are aware of the possibilities for this exciting technology. We too have expanded and consolidated materials in this second edition in the hope that ‘Ultra Wideband: Signals and Systems in Communication Engineering’ will continue to prove a useful tool for many students and engineers to come to an understanding of the basic technologies for uwb.

    標簽: Wideband Signals Systems Ultra and

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • Ultra Wideband Signals and Systems 1st

    In this book we focus on the basic signal processing that underlies current and future ultra wideband systems. By looking at signal processing in this way we hope this text will be useful even as uwb applications mature and change or regulations regarding ultra wideband systems are modified. The current uwb field is extremely dynamic, with new techniques and ideas being presented at every communications and signal-processing conference. The basic signal-processing techniques presented in this text though will not change for some time to come. Thus, we have taken a somewhat theoretical approach, which we believe is longer lasting and more useful to the reader in the long term than an up-to-the-minute summary that is out of date as soon as it is published.

    標簽: Wideband Signals Systems Ultra 1st

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • 電磁場與微波技術(上下冊) 第二版

    電磁場與微波技術專業主要從事電磁場理論、微波光波技術及其工程應用的研究,包括電磁場理論與應用、光波導理論與技術、微波毫米波技術與系統、微波毫米波集成技術、光波技術及其應用等幾個主要研究方向。研究課題主要涉及電磁理論中的輻射與散射、計算電磁學、微波毫米波器件與電路、微波毫米波通信與雷達系統、超寬帶(uwb)技術、新型天線技術、復雜目標的散射特性和復雜環境的傳播特性、光器件與光傳感技術、空間光通信與量子密鑰分配技術以及與相關學科交叉的理論與技術等。適合從事微波在介質中的傳輸,電磁場目標識別、成像,微波波譜理論與技術研究和微波、光纖傳感器,微波波譜儀、微波吸收材料的開發研制的工程人員學習。

    標簽: 電磁場 微波

    上傳時間: 2022-07-17

    上傳用戶:得之我幸78

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