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A Study on the Design of Nonlinear Wire Antennas with Ripple-Type Wide Band Characteristics for Improvement of Pulse Radiation Ability  

Kim, Yeon-Seon (Dept.of Electronics Engineering, Kumoh National Institute of Technology)
Park, Ui-Jun (Dept.of Electronics Engineering, Kumoh National Institute of Technology)
Publication Information
Abstract
A nonlinear shaping method for a wire antenna is presented to improve the limited pulse radiation ability due to the frequency characteristics with nulls which are found in the conventional straight or V antennas. The developed scheme is based on the minimization of frequency-dependence of the radiated electric field intensity over wide band, hence giving the ripple-type frequency characteristics. It is shown that the synthesized shape has more advantage in the case of shorter pulse. That is, we found that for shorter pulse exciting, the radiated peak value of the synthesized antenna is larger than that of the conventional linear antenna. The inverse discrete Fourier transform based on the moment method is used for the transient analysis of current distribution and far field electric field.
Keywords
Pulse Antenna; Dipole; Wire Antenna;
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