A wideband circularly polarized metallic cavity antenna fed with an L‐shaped probe. Issue 10 (October 2014)

• Record Type: Journal Article
• Authors: Liu, Longsheng; Zhao, Yang; Li, Yue; Zhang, Zhijun; Feng, Zhenghe
• Is Part Of: Microwave and optical technology letters. Volume 56:Issue 10(2014:Oct.)
• Page Start: 2398
• Page End: 2403
• Publication Date: 2014-10
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.28605
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>In this letter, a wideband circularly polarized metallic cavity antenna is designed and fabricated. To enhance both the impedance and axial‐ratio bandwidths (ARBWs), an L‐shaped probe is used to produce two orthogonal TE<bold>₁₁₁</bold> modes for left‐hand circular polarization. The measured impedance bandwidth for S₁₁ ≤ −10 dB and 3‐dB ARBW were 1.72 GHz (20.6%, 7.48–9.2 GHz), and 1.5 GHz (17.3%, 7.9–9.4 GHz), respectively. The measured realized gain at broadside was 6.6–9.3 dBic over the overlapped impedance and AR bandwidth 1.38 GHz (16.1%, 7.9–9.28 GHz). The experimental results reveal that the proposed antenna is attractive for satellite communication applications due to its simple metallic structure, good performance, and strong power‐handling capability. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2398–2403, 2014</p> </abstract>