In this paper, three Vivaldi antenna are introduced to compare their performance. As base for our study an ordinary Vivaldi antenna is designed. Then defected ground structures (DGS) are employed to extend the low-end bandwidth limitation and improve the radiation characteristics at lower frequencies. A prototypes with 4 pairs of DGS placed in the antennas is fabricated and experimentally compared with the ordinary Vivaldi antenna. Reflection coefficient is measured indicating a reasonable agreement with simulations. These results validate the benefits of DGS in Vivaldi antennas to its application for a Ground Penetrating Radar (GPR).
|Title of host publication||Proceedings of the 2017 IEEE 24th International Congress on Electronics, Electrical Engineering and Computing, INTERCON 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - 20 Oct 2017|
|Event||24th IEEE International Congress on Electronics, Electrical Engineering and Computing, INTERCON 2017 - Cusco, Peru|
Duration: 15 Aug 2017 → 18 Aug 2017
|Name||Proceedings of the 2017 IEEE 24th International Congress on Electronics, Electrical Engineering and Computing, INTERCON 2017|
|Conference||24th IEEE International Congress on Electronics, Electrical Engineering and Computing, INTERCON 2017|
|Period||15/08/17 → 18/08/17|
Bibliographical noteFunding Information:
The simulations were made with the software HFSS (High Frequencies Structures Simulation) version 18.1. The project was sponsored by General Institute of Research (IGI) of National University of Engineering and the fabrication and measurement were implemented at INICTEL-UNI.
© 2017 IEEE.
- defected ground structures (DGS)
- Ground Penetrating Radar (GPR)
- Vivaldi Antennas