A Gain Enhancement Study on a Vivaldi Antenna for Radar Applications

Yildiz E. M., Dede C. F. G., Karaçuha K., Eker S.

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022, Colorado, United States Of America, 10 - 15 July 2022, pp.1218-1219 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/ap-s/usnc-ursi47032.2022.9887110
  • City: Colorado
  • Country: United States Of America
  • Page Numbers: pp.1218-1219
  • Istanbul Technical University Affiliated: Yes


© 2022 IEEE.This paper presents an exponential flared Vivaldi type antenna in two different modifications that achieved high bandwidth and gain. The proposed antenna has been designed and optimized, considering the integration feasibility of the phased array system. The proposed antenna has been obtained with the bandwidth 5.12-16.34 GHz by optimizing a standard exponential flared Vivaldi antenna topology on CuClad substrate with dielectric constant ϵr = 2.5. Including a half-circle as a hat notch and slots improve the antenna's directivity. The parametric study on notch elements is provided. The outcome of the parametric investigation is that those notch elements affect the directivity of the radiation characteristic without changing the S parameters due to its symmetrical characteristics.