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A Novel Dielectric Loaded Vivaldi Antenna with Improved Radiation Characteristics for UWB Application

MetadataDetails
Publication Date2018-01-01
AuthorsHua Zhu, Xiuping Li, Yao Li, Jun Xiao
InstitutionsBeijing University of Posts and Telecommunications
Citations4

In this paper, a compact (40Ɨ50Ɨ0.8mm3) Vivaldi antenna with trapezoidal corrugation and a triangular director element is proposed for high gain performance. The exponential slot with diamond slot stub is designed to broaden the bandwidth. The measured bandwidth is 11.3 GHz from 2.9 to 14.2 GHz under the condition of Voltage Standing Wave Ratio (VSWR) less than 2. The simulated gain is 5.5-9 dBi at the full bandwidth. The measured gain is 5-7.6 dBi from 3 to 5.8 GHz. In addition, the measured group delay of the proposed antenna is around 2±0.8 ns. The simulated and measured results agree well.