Copyright © 2008 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Papers -- Antennas and Propagation |
Effects of Bragg Scattering on Ultra-Wideband Signal Transmission from Periodic Surfaces
1 The authors are with the Department of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8550 Japan. E-mail: tutiya{at}ap.ide.titech.ac.jp, 2 The author is with Tokyo Denki University, Tokyo, 101-8457 Japan.
In this paper, the effects of Bragg scattering on ultra-wideband (UWB) signal transmission from periodic surfaces are reported. First, the frequency dispersive property of Bragg scattering is theoretically and experimentally confirmed. Next, the transfer function of both specular path and Bragg scattering are extracted. Then direct sequence UWB (DS-UWB) transmission simulations are conducted by using a raised cosine pulse that occupied 3.1 to 10.6 GHz and a Gaussian pulse that occupied 8.75 to 9.25 GHz. Finally, the effects of Bragg scattering on UWB systems are discussed.
Key Words: Bragg scattering, ultra-wideband, UWB transmission, propagation
Manuscript received March 30, 2007. Manuscript revised August 6, 2007.
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