[天线]34 CHARACTERIZATION OF A WIDEBAND, LOW- Q , ELECTRICALLY SMALL ANTENNA

CHARACTERIZATION OF A WIDEBAND, LOW- Q , ELECTRICALLY SMALL ANTENNA WV@Tm$
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Craig A. Grimes,1 Gang Liu,1 Dale M. Grimes,1 and %~;Q_#CR/K  
Keat Ghee Ong1 ^(\Gonf<  
1 Department of Electrical Engineering c6uKKh>  
University of Kentucky u7C{
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Lexington, Kentucky 40506-0046 Y) h%<J  
2 Department of Physics and Astronomy =5/;h+bk+3  
University of Kentucky W@C56fCa  
Lexington, Kentucky 40506-0055 7 b.-&,  
Receied 30 March 2000 .apX72's,  
ABSTRACT: Using numerical and experimental techniques, a wideband, bsP;  
low-Q, electrically small antenna design is characterized as a function of _]S6>  
frequency and the relatie phasing between antenna elements. The +{%4&T<nHw  
antenna demonstrates wideband operation, with a radiation Q approximately KVcZ@0[S  
a factor of 20 below the Q-limit established by Chu for electrically Fp6Y Y  
small, omnidirectional antennas.  2000 John Wiley & Sons, Inc. YJ^ lM\/<  
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