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Co-design of a wideband circularly polarized filtering patch antenna with three minima in axial ratio response
Qiong-Sen Wu; Xiao Zhang; Lei Zhu
2018-07-13
Source PublicationIEEE Transactions on Antennas and Propagation
ISSN0018-926X
Volume66Issue:10Pages:5022-5030
Abstract

A co-design of a wideband circularly polarized (CP) patch antenna is proposed in this paper. The patch antenna is seamlessly integrated with two bandpass filter networks consisting of one and two λ/2 resonators, respectively, which are designed to excite two orthogonal modes with equal magnitude and quadrature phase over a widened bandwidth. In co-design of this filtering antenna, the patch antenna is equivalently treated as the last-stage resonator and the output port of the filter network. In analysis of its far field, axial ratio (AR) of CP wave is mapped to its magnitude and phase responses. By simultaneously synthesizing the magnitude ratio and phase difference of the two filter networks' transmission coefficients to vary around 1° and 90°, respectively, wideband AR response with three minima is realized. Based on this design method and the theoretically derived results, a CP patch antenna prototype with a height of 0.028 λ is fabricated and measured. It is experimentally demonstrated that around 8.8%, bandwidth can be achieved with VSWR < 2, AR < 3 dB, and 3 dB gain variation.

KeywordAxial Ratio (Ar) Circular Polarization Filtering Antenna Network Wideband
DOI10.1109/TAP.2018.2856104
URLView the original
Indexed BySCIE
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000446652300006
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Citation statistics
Cited Times [WOS]:27   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationDepartment of Electrical and Computer Engineering, University of Macau, Macau, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Qiong-Sen Wu,Xiao Zhang,Lei Zhu. Co-design of a wideband circularly polarized filtering patch antenna with three minima in axial ratio response[J]. IEEE Transactions on Antennas and Propagation,2018,66(10):5022-5030.
APA Qiong-Sen Wu,Xiao Zhang,&Lei Zhu.(2018).Co-design of a wideband circularly polarized filtering patch antenna with three minima in axial ratio response.IEEE Transactions on Antennas and Propagation,66(10),5022-5030.
MLA Qiong-Sen Wu,et al."Co-design of a wideband circularly polarized filtering patch antenna with three minima in axial ratio response".IEEE Transactions on Antennas and Propagation 66.10(2018):5022-5030.
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