[天线]72 The input impedance and the antenna gain of the spherical helical antenna

The input impedance and the antenna gain of the spherical helical antenna 4T?h  
H. T. Hui, K. Y. Chan, and E. K. N. Yung |=EZ1<KzD  
Abstract—The input impedance and the antenna gain of the spherical in(U:04  
helical antenna are obtained theoretically and experimentally. Results indicate yB3;  
the better performance of the 3-turn antenna over the 7-turn one in BbRBT@  
terms of the impedance bandwidth and the stability of the antenna gain. MSV2ip3  
The theoretical current distribution is also obtained and its salient characteristics 8o/}}=m$  
are discussed. +n7?S~R$  
Index Te .. !wWJ^Oz=  
XfKo A0  

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