Corrugated antipodal Vivaldi antenna using spiral shape negative index metamaterial for ultra-wideband application

Author

Singha, Rahul ; Vakula, D.

Author_Institution

Electron. & Commun. Eng., Nat. Inst. of Technol., Warangal, Warangal, India

fYear

2015

fDate

2-3 Jan. 2015

Firstpage

179

Lastpage

183

Abstract

This paper describes a corrugated antipodal Vivaldi antenna with improved performance by using negative index metamaterial (NIM) of the Archimedean spiral design. A single layer NIM piece is placed perpendicular middle of the two arm of the proposed antenna. The antenna size is 30×60×0.787 mm³ operating at 8GHz. The simulated results of NEVI corrugated antipodal Vivaldi antenna show that the gain and directivity has increased up to 1.2dB and 1dB respectively. The HPBW is increased by 90 with the reflection coefficient less than DIO dB from 4.7 GHz to 11 GHz for UWB application.

Keywords

metamaterial antennas; microwave antennas; spiral antennas; ultra wideband antennas; Archimedean spiral design; corrugated antipodal Vivaldi antenna; frequency 4.7 GHz to 11 GHz; negative index metamaterial; single layer NIM piece; spiral shape negative index metamaterial; ultra-wideband application; Antenna radiation patterns; Indexes; Metamaterials; Spirals; Substrates; Vivaldi antennas; Half power beam width (HPBW); Negative index metamaterial (NIM); Ultra wideband (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing And Communication Engineering Systems (SPACES), 2015 International Conference on

Conference_Location

Guntur

Type

conf

DOI

10.1109/SPACES.2015.7058242

Filename

7058242