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Antenna and Pulse Designs for Meeting UWB Spectrum Density Requirements

Summary: Antenna and Pulse Designs for Meeting UWB
Spectrum Density Requirements
Guofeng Lu, Predrag Spasojevic, and Larry Greenstein
WINLAB, ECE Department, Rutgers University
73 Brett Road, Piscataway, NJ 08854
{guofeng, spasojev, ljg}@winlab.rutgers.edu
Abstract-- Antenna design in ultra-wideband (UWB) systems
is a major challenge. For, in contrast to conventional systems,
wherein waveform distortion by the antenna is negligible, there
is potentially significant waveform distortion by UWB antennas.
A further challenge to UWB system design is posed by mandated
limits on power spectrum density, such as the FCC emission
mask. In this paper, we join these two issues for the case of
impulse radio (IR)-type UWB, showing how antenna design,
transmit pulse design, filter design and attainable output signal-
to-noise ratio (SNR) are intertwined. In particular, through
software simulation, several antenna frequency responses are
calculated, and a modified inversely-positioned bowtie antenna
('rounded diamond') is found to give the broadest frequency
response. An integrated design of antenna, transmit pulse shaping


Source: Arslan, Hüseyin - Department of Electrical Engineering, University of South Florida


Collections: Engineering