A resonant cavity antenna based on an optimized thin superstrate

✍ Scribed by Yuehe Ge; Karu P. Esselle

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 416 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23898

✦ Synopsis

Abstract

A high‐gain, low‐profile electromagnetic band‐gap (EBG) resonator antenna based on a thin frequency‐selective‐surface (FSS) superstrate is presented. The superstrate thickness has been reduced from 0.25λ~g~ in the previous design to about 0.06λ~g~ without significantly affecting the antenna performance. The FSS superstrate is made out of standard low‐cost FR4 material. The high‐gain performance is achieved by optimizing the metallic patterns printed on the two surfaces of the superstrate so that a high‐Q resonant cavity is obtained. A prototype demonstrates that an EBG resonator antenna made out of a 0.8 mm thick optimized superstrate can provide a gain as high as over 21 dB at the operating frequency of 12 GHz. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 3057–3059, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23898