Balanced antipodal Vivaldi antenna with novel transition from feeding line to the flares

Author

Azodi, Hossein ; Zhuge, Xiaodong ; Yarovoy, Alexander

Author_Institution

Fac. of EEMCS, Delft Univ. of Technol., Delft, Netherlands

fYear

2011

fDate

11-15 April 2011

Firstpage

1279

Lastpage

1283

Abstract

Designing a balanced antipodal Vivaldi antenna for UWB radar applications is reported in this paper. The antenna operates in the frequency range of 0.3-6 GHz. With the novel concept of overlap-free transition between transmission line and the flares, the operational bandwidth is increased by decreasing the lowest frequency about 30 % while the antenna width is kept constant. The antenna is suitable for such impulse radar as GPR or other impulse radio application thanks to its nearly constant group delay which preserves the excitation pulse shape.

Keywords

UHF antennas; broadband antennas; coplanar transmission lines; ground penetrating radar; microwave antennas; radar antennas; ultra wideband radar; GPR; UWB radar applications; balanced antipodal Vivaldi antenna design; excitation pulse; feeding line; flares; frequency 0.3 GHz to 6 GHz; group delay; impulse radar; operational bandwidth; overlap-free transition; transmission line; Apertures; Ground penetrating radar; Radar antennas; Vivaldi antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Conference_Location

Rome

Print_ISBN

978-1-4577-0250-1

Type

conf

Filename

5781740