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A Wideband Differential-Fed Dual-Polarized Microstrip Antenna Under Radiation of Dual Improved Odd-Order Resonant Modes
Liu, Neng-Wu; Zhu, Lei; Zhang, Xiao; Choi, Wai-Wa
2017
Source PublicationIEEE ACCESS
ISSN2169-3536
Volume5Pages:23672-23680
Abstract

A low profile differential-fed dual-polarized microstrip patch antenna (MPA) with bandwidth enhancement is proposed under radiation of the first and second odd-order resonant modes. First, all of evenorder modes are fully suppressed by using a differentially feeding scheme instead of the single probe feed. Next, the radiation pattern of a square MPA is theoretically analyzed. It is demonstrated that the traditional monopole-like radiation of the second odd-order mode in the H-plane, i.e., TM21 mode, can be transformed into the broadside radiation by etching out a narrow slot at the center of the radiating patch. After that, an array of shorting pins is symmetrically embedded underneath the radiating patch so as to progressively push up the resonant frequency of the TM01 mode ( or TM10 mode), while almost maintaining that of TM21 mode ( or TM12 mode) to be unchanged. With these arrangements, a wide impedance bandwidth with stable radiation peak in the broadside direction is achieved for the MPA under this dual modes operation. Finally, the dual-polarized MPA is fabricated and measured. The measured results are found in good agreement with the simulated ones in terms of the reflection coefficient, radiation pattern, and realized gain, demonstrating that the MPA's impedance bandwidth (vertical bar S-dd11 vertical bar < -10 dB) is tremendously increased up to about 8% with a high differential port-to-port isolation of better than 22.6 dB. In particular, a low profile property of about 0.024 free-space wavelength and the stable radiation pattern are also achieved.

KeywordMicrostrip Patch Antenna Differential-fed Dual-polarized Bandwidth Enhancement Low Profile Radiation Pattern Transformation
DOI10.1109/ACCESS.2017.2751498
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering ; Telecommunications
WOS SubjectComputer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000415171300010
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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被引频次[WOS]:16   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, China
First Author AffilicationFaculty of Science and Technology
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Liu, Neng-Wu,Zhu, Lei,Zhang, Xiao,et al. A Wideband Differential-Fed Dual-Polarized Microstrip Antenna Under Radiation of Dual Improved Odd-Order Resonant Modes[J]. IEEE ACCESS,2017,5:23672-23680.
APA Liu, Neng-Wu,Zhu, Lei,Zhang, Xiao,&Choi, Wai-Wa.(2017).A Wideband Differential-Fed Dual-Polarized Microstrip Antenna Under Radiation of Dual Improved Odd-Order Resonant Modes.IEEE ACCESS,5,23672-23680.
MLA Liu, Neng-Wu,et al."A Wideband Differential-Fed Dual-Polarized Microstrip Antenna Under Radiation of Dual Improved Odd-Order Resonant Modes".IEEE ACCESS 5(2017):23672-23680.
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