In this paper, a novel corrugated structure at the edges of the Vivaldi substrate is presented. Compared with the Vivaldi antenna without corrugated structure, the new structure has a better radiation pattern. While compared with the traditional corrugated structure, the new structure has a better front-to-back ratio (F/B ratio). Properly chosen thickness and dielectric constant of substrate ensure a relatively small size while the lower frequency is around 1 GHz. A Vivaldi structure also promises high gain in ultra-wideband (UWB) range. For its planar structure, the antenna is easily fabricated with a low cost. The design of a novel Vivaldi antenna described in this paper operates from 1 GHz to more than 3 GHz with −10 dB return loss and produce the gain with a range of 7 dBi ∼ 11 dBi. The current design is one of the most ideal antennas to be used for through-wall radar.
CITATION STYLE
Wang, Z., & Zhang, H. (2009). Improvements in a high gain uwb antenna with corrugated edges. Progress In Electromagnetics Research C, 6, 159–166. https://doi.org/10.2528/PIERC09011404
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