[天线]16 DESIGN OF AN EXPONENTIALLYTAPERED TEM HORN ANTENNA FOR THE WIDE BROADBAND COMMUNICATION

DESIGN OF AN EXPONENTIALLYTAPERED @.0,ka,X  
TEM HORN ANTENNA FOR %nIjRmqM~  
THE WIDE BROADBAND t!k 0n&P  
COMMUNICATION *n47.(a2i  
Hyoungjin Choi and Sangseol Lee B[$e;h*Aw[  
Division of Electronic and Computer Engineering &`9lIVB,K  
Hanyang University 5Ql6?UHD  
Seoul, 133-791, Korea wK3}K  
Received 23 August 2003 ck}y-,>,[O  
ABSTRACT: A transverse electromagnetic (TEM) horn antenna is designed B5cTzY.h-  
and realized using exponentially tapered conductor flares for X>CYKRtb  
wireless communications. This exponentially tapered structure of the s^U^n//  
flares decreases the impedance mismatching a lot and reduces the size Ut%ie=c  
and cost of the TEM horn. The VSWR of the antenna is less than 2 in eD}Ga4  
the frequency band of 74.4 MHz to 1.19 GHz, and its gain is more than IJ0RHDod:  
8.3 dBi over 200 MHz. Those performances show that the designed T&c[m!}X|t  
TEM horn antenna has wide broadband characteristics. © 2004 Wiley 7+c@pEU]  
Periodicals, Inc. Microwave Opt Technol Lett 40: 531–534, 2004; s(dox; d  
Published online in Wiley InterScience ([url]www.interscience.wiley.com[/u .. k91Y"_&  
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