A Wideband Circularly Polarized Patch Antenna With Enhanced Axial Ratio Bandwidth via Co-Design of Feeding Network
Wu, Qiong-Sen1,2; Zhang, Xiao2,3; Zhu, Lei3
2018-10
Source PublicationIEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
ISSN0018-926X
Volume66Issue:10Pages:4996-5003
Abstract

A wideband circularly polarized (CP) patch antenna with enhanced axial ratio (AR) bandwidth via co-design of feeding network is proposed in this paper. One lambda/4 resonator and one lambda/2 resonator are introduced and coupled in proximity to two orthogonal points of a square patch radiator to excite two orthogonal modes. These two resonators not only function as impedance matching elements to achieve equal magnitude of two orthogonal modes in a wide frequency band but also provide the required 90 degrees phase difference. In this way, two minima in the AR response appear, resulting in extended AR bandwidth. The wideband design of the antenna is carried out based on the equivalent circuit model, where the patch radiator is treated as a conductance, inductance, and capacitance parallel resonator. In particular, the feeding network and the patch are jointly considered as a three-port network for synthesis design. By mapping the radiated far field to the magnitude and phase on the radiation conductance in the circuit model, the AR response of the antenna becomes predictable in a straightforward manner. Measured results experimentally demonstrate that the 3-dB AR bandwidth of our proposed CP patch antenna is 2.7 times that of the traditional one fed with two 90 degrees offset lines.

KeywordAxial Ratio Bandwidth Circular Polarization Filtering Antenna Network Synthesis Design Wideband
DOI10.1109/TAP.2018.2851616
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000446652300003
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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Citation statistics
Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, China
3.ATR National Key Laboratory of Defense Technology, College of Information Engineering, Shenzhen University, Shenzhen 518060, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Wu, Qiong-Sen,Zhang, Xiao,Zhu, Lei. A Wideband Circularly Polarized Patch Antenna With Enhanced Axial Ratio Bandwidth via Co-Design of Feeding Network[J]. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,2018,66(10):4996-5003.
APA Wu, Qiong-Sen,Zhang, Xiao,&Zhu, Lei.(2018).A Wideband Circularly Polarized Patch Antenna With Enhanced Axial Ratio Bandwidth via Co-Design of Feeding Network.IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,66(10),4996-5003.
MLA Wu, Qiong-Sen,et al."A Wideband Circularly Polarized Patch Antenna With Enhanced Axial Ratio Bandwidth via Co-Design of Feeding Network".IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION 66.10(2018):4996-5003.
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