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Characterization of ultrawideband antennas using transfer functions
Author(s) -
Qing Xianming,
Chen Zhi Ning,
Chia Michael Yan Wah
Publication year - 2006
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2005rs003287
Subject(s) - vivaldi antenna , antenna (radio) , antenna measurement , transfer function , antipodal point , acoustics , antenna factor , computer science , antenna noise temperature , coaxial antenna , impulse response , physics , dipole antenna , optics , electronic engineering , telecommunications , mathematics , engineering , electrical engineering , geometry , mathematical analysis
Transfer functions are useful parameters for ultrawideband (UWB) antenna characterization. The response of an antenna system to any excitation can be completely determined in terms of the transfer functions (or the “impulse response” in time domain) of the antennas. In this paper, the transfer functions are defined as a transmitting antenna transfer function, a receiving antenna transfer function, and an antenna system transfer function to characterize UWB antenna systems readily and accurately. The transfer functions are expressed by ABCD and S parameters when the antenna system is considered as a two‐port network. As examples, an antipodal Vivaldi antenna and a disc cone antenna are investigated to validate the proposed method. The measured results are further verified by XFDTD simulation.