[天线]11 An approximate formulation for the characteristic impedance of noncoplanar fin antennas

International Journal of Infrared and Millimeter Waves, Vol. 18, No. 2, 1997 |sM#g1D@  
AN APPROXIMATE FORMULATION FOR THE %t.IxMY  
CHARACTERISTIC IMPEDANCE OF NONCOPLANAR 8@ gD03  
FIN ANTENNAS xmd$Jol^  
Zhengwei Du and Chengli Ruan t
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Institute of Applied Physics B#
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University of Electronic Science and Technology of China 8k'em/M~  
Chengdu, Sichuan 610054 =DwH*U/YR  
People's Republic of China lfd{O7L0b  
Received December 2, 1996 qZ1PC
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Abstract 1K',Vw_  
This paper describes an approximation for the characteristic HV(*6b
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impedance of noncoplanar fin antennas. The formulation is simple and UpBYL?+L  
enough accurate for practical applications. The error made by the W\Y 4%y}  
approximation is less than + 2%, it has been proved to be effective by c4W"CD;D  
stripline theory. The numerical results are good agreement to the <_uv!N  
experimental resul .. V t
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