High constant gain modified antipodal Vivaldi antenna incorporated with a phase compensation lens and a frequency selective surface


Turkmen-Kucuksari Ö. , Kocakaya A. , Çimen S. , Çakır G.

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, cilt.113, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 113
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.aeue.2019.152975
  • Dergi Adı: AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS

Özet

The aim of this study is to demonstrate the design of an antenna with a high gain as well as almost constant gain characteristics over 3.1-10.6 GHz. The modified antipodal Vivaldi MAVARW antenna initially developed in an earlier study is used as the basic antenna. Three different gain enhancement methods such as increasing antenna size, using a phase compensation lens (PCL), and using a frequency selective surface (FSS) are applied and investigated on a comparative basis for this aim. The final MAVARW antenna is composed of a two-cut square ring PCL, and an FSS. The final antenna has a minimum 12.24 gain level with a maximum 1.66 dB gain deviation over 3.1-10.6 GHz in simulations. The simulation results for the final antenna are validated experimentally with very good agreement. A minimum 12.2 dB gain level as well as a maximum 1.8 dB gain deviation is obtained in measurements. (C) 2019 Elsevier GmbH. All rights reserved.