Open AccessDesign of double‐sided axe‐shaped ultra‐wideband antenna with reduced radar cross‐section
Author(s) -
Dikmen Cengizhan M.,
Çimen Sibel,
Çakır Gonca
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0390
Subject(s) - radar cross section , optics , ultra wideband , radiation pattern , bandwidth (computing) , antenna (radio) , physics , antenna measurement , antenna efficiency , radar , scattering , acoustics , computer science , telecommunications
In this study, a novel axe‐shaped ultra‐wideband (UWB) antenna with low‐backscattering radar cross‐section (RCS) is designed. The designed UWB antenna bandwidth is 3.4–15.5 GHz covering the entire band assigned for the UWB applications. The RCS of the designed antenna is reduced by modifying the geometrical shape. This technique is based on the subtraction of the metal areas which have the minimum current distributions on the surface of the printed antenna. Therefore the backscattering RCS of the modified axe‐shaped UWB antenna is reduced up to 10 dB in the whole frequency band while maintaining the radiation performance. The size of the antenna is 0.32 λ l × 0.39 λ l , where λ l is the wavelength at the lower operation frequency and the fractional bandwidth is 128%. The radiation patterns, scattering characteristics and the RCS of both the modified and reference axe‐shaped UWB antennas are simulated and experimentally verified. The simulation and measurement results are in a good agreement.