Wide-to-narrowband reconfigurable Vivaldi antenna using switched-feed technique

• Main Authors: Chagharvand, S., Hamid, M. R., Kamarudin, M. R., Kelly, J. R.
• Format: Article
• Published: Springer New York LLC 2016
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/71143/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960088374&doi=10.1007%2fs11235-016-0150-x&partnerID=40&md5=c4dd15f7ec00d59d8f7c55b2930c48fb
• Institution: Universiti Teknologi Malaysia

This paper presents research on a Vivaldi antenna with the ability to change its operating frequency between narrowband and wideband. In total, five different modes are supported: a wideband and four narrowband modes. The wideband mode extends from a frequency of 1 3.7 GHz. The narrowband modes operate at 2.3, 2.6, 3, and 3.2 GHz, respectively. The wideband to narrowband reconfiguration is achieved by switching from a coplanar waveguide feed to a slot-line feed. We also compare simulated and measured results for the antenna, including magnitudes of reflection coefficient, radiation patterns and gain.