Table of Contents Author Guidelines Submit a Manuscript
International Journal of Antennas and Propagation
Volume 2017, Article ID 3281095, 9 pages
Research Article

An X-Band Dual-Polarized Vivaldi Antenna with High Isolation

1College of Electronic Science and Technology, National University of Defense Technology, Hunan 410073, China
2Cavendish Laboratory, University of Cambridge, London, UK
3The Southwest Electronics and Telecommunication Technology Research Institute, Chengdu 610041, China

Correspondence should be addressed to Denghui Huang; moc.361@40004051hdh

Received 14 May 2017; Revised 14 July 2017; Accepted 20 July 2017; Published 24 August 2017

Academic Editor: Luciano Tarricone

Copyright © 2017 Denghui Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An X-band dual-polarized Vivaldi antenna with high isolation is proposed. The procedure of this antenna design includes the conventional Vivaldi antenna with regular slot edge (RSE), the dual-polarized Vivaldi antenna with two Vivaldi antennas which have different feeding point positions in a cross-shaped form, and the two Vivaldi antennas with a galvanic contact in soldering point. By applying the RSE, it reduced the dimensions of the Vivaldi antenna and improved its radiation performance. The modified antenna is fabricated and measured. The measured results show that  dB at the entire X-band for the two Vivaldi antennas. The isolation () between the two feeding ports, which has been improved by applying the different feeding point positions and the galvanic contact in soldering point, is better than 34 dB at X-band. In addition, the cross-polarized discrimination is better than 21 dB for the two Vivaldi antennas, and the measured results also include the gain of two Vivaldi antennas.