A single-FED slot-aperture hybrid antenna for broadband circular polarization operations

✍ Scribed by Yu-Chun Lu; Ming-Je Yu; Yi-Cheng Lin

• Book ID: 102949666
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 674 KB
• Volume: 54
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.26569

✦ Synopsis

Abstract

This article presents a microstrip‐fed slot‐aperture hybrid antenna for wideband circularly polarized (CP) operations. The antenna consists of a U‐shaped slot, a rectangular aperture, and a probing strip fed by a microstrip line. In general, the U‐shaped slot and the rectangular aperture resonate at two separate frequencies. When properly arranged, the proposed antenna may resonate over a single wideband of CP radiation. The 3‐dB axial ratio (AR) bandwidth of the presented antenna in free space is about 27% with the gain level about 34 dBic. When a planar reflector is incorporated for the desirable unidirectional pattern, the presented antenna has an enhanced gain about 7 dBic with a 3‐dB AR bandwidth of 25% and a front‐to‐back ratio of about 14 dB. Good agreement between measured and simulated results was achieved. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:412–415, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26569