[天线]20 RC-Load Bow-Tie Antenna for Improved

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 10, OCTOBER 2004 2555 tmiRv.Mhn<  
RC-Loaded Bow-Tie Antenna for Improved WH2?_U-8h  
Pulse Radiation !/, 6+2Ru  
Andrian Andaya Lestari, Alexander G. Yarovoy, Member, IEEE, and Leo P. Ligthart, Fellow, IEEE \dSMF,E  
Abstract—In this paper, a loading technique for improving pulse ik02Q,J  
radiation from bow-tie antennas is introduced. This technique allows rXXIpQRi$S  
transmission of short transient pulses with very small latetime >HO{gaRM  
ringing and relatively high radiation efficiency. It makes use X9C)FS  
of a combination of a constant resistive loading along the antenna 1$oVcDLl  
and a capacitive loading with linearly increasing reactance toward YP{)jAK  
the antenna ends. The constant resistive loading is applied using \^2%v~  
volumetric microwave absorbers to cover one side of the antenna 1xg^;3m
2  
and the linear capacitive loading is realized by constructing narrow cGiS[-g  
slots on the antenna surface. Relatively high radiation efficiency is }q9;..oL  
achieved by choosing the location of the slot nearest to the feed FU/yJy  
point in such a way that radiation from it combines constructively {ve86 POY  
with radiation from the feed point. Using a 0.8-ns monocycle for excitation, J;4x-R$W  
the technique results in a level of late-time ringing of lower n-[J+DdB  
than 40 dB and at the same time the peak value of the transmitted 4&;.>{:;  
pulse is 54% higher t .. 0o2o]{rM{2  
4mSL*1j  

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不错，正在研究bow-tie，多谢

不错，研究研究！！！