[天线]13 Calculation of the characteristic impedance of TEM horn antennas

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 43, NO. 1, JANUARY 1995 47 0@Z}.k30  
Calculation of the Characteristic Impedance @DSKa`  
of TEM Horn Antennas Using the H4<Q}([w  
Conformal Mapping Approach ?$VkMu$2k  
A. P. Lambert, Member, IEEE, S. M. Booker, and P. D. Smith, Associate, IEEE ~,.;2K73  
Abstract- A new conformal mapping technique for determining 5&0qr$  
the characteristic impedance of TEM horn antennas is
tNz(s)  
presented. The original work by Carrel [l], on noncoplanar fin upGLZ#  
antennas of this type, predicts incorrect impedance values, which WF<3 7"A@  
do not agree with experimental results. This paper discusses fully ZKai*q4?  
the source of the error in [ll and details the successive mappings ^95njE`>t`  
involved in the new approach. Verification of the method is JB'XH~4H  
provided b .. ]D,\(|  
$ByP 9=|  

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