Low‐cost quad‐band dual antipodal Vivaldi antenna using microstrip to CPS transition

• Published in: Microwave and optical technology letters Vol. 60; no. 9; pp. 2315 - 2320
• Main Authors: Bulgaroni, Renan, Torres, Wesley M., de Araujo, Humberto X., Casella, Ivan R. S., Capovilla, Carlos E.
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc 01-09-2018
• Subjects: Antenna arrays; antipodal Vivaldi antenna; Bluetooth; Construction costs; Local area networks; Microstrip antennas; microstrip to CPS transition; planar antenna; Substrates; Topology; Wireless networks
• ISSN: 0895-2477; 1098-2760
• DOI: 10.1002/mop.31348

In this article, a new topology of antenna for multi‐band application is proposed, designed, and characterized. This one is based on an array of two antipodal Vivaldi antennas diametrically placed and fed through a microstrip to coplanar strip (CPS) transition, which generates an odd‐order coupling at the input of the elements. The designed antenna was built on a low‐cost substrate (FR‐4), with compatible operation at 1.85–2.00, 2.20–2.85, 3.35–3.81, and 5.00–6.9 GHz (PCS, Bluetooth, WLAN, WiMAX, TD‐SCDMA, and ISM). The measurements, on a fabricated prototype, and the simulations demonstrate the operability and functionality, with satisfactory performance, of the proposed antenna topology.