Ultra-Wideband Vertically Polarized Long-Slot Circular Phased Array
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UWB VP Long-Slot CPA 2024 UAz.pdf
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Final Accepted Manuscript
Affiliation
Department of Electrical and Computer Engineering, University of ArizonaIssue Date
2024-03-25Keywords
Antenna arraysArrays
Baluns
Bandwidth
Circular phased array
directional radiation
long-slot array
Metals
omnidirectional radiation
Phased arrays
Substrates
ultra-wideband (UWB)
vertical polarization (VP)
Metadata
Show full item recordCitation
G. Wei, Y. Wang, Y. He, R. W. Ziolkowski and Y. J. Guo, "Ultra-Wideband Vertically Polarized Long-Slot Circular Phased Array," in IEEE Transactions on Antennas and Propagation, vol. 72, no. 5, pp. 4161-4172, May 2024, doi: 10.1109/TAP.2024.3373173.Rights
© 2024 IEEE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
An ultra-wideband (UWB) vertically-polarized (VP) long-slot circular phased array with compact size is presented. The design realizes a quasi-magnetic current sheet array. It consists of just one circular array instead of a typical cylindrical system, which employs multiple circular arrays to achieve radiated fields with the same properties. A 16-element array was fabricated and measured to demonstrate its azimuthally invariant radiating capabilities. Measurement results show that the developed array achieves a wider impedance bandwidth, commendable cross-polarization discrimination (XPD), and a significantly more compact design than previously reported systems. In its omnidirectional mode, the array exhibits a 107.07% bandwidth (VSWR ≤ 2.0) with an XPD level better than 19.5 dB. In its directional mode, the array operates over 100% bandwidth with an XPD level better than 20.9 dB. The prototype exhibits exceptional azimuthal out-of-roundness values - better than 1.3 dB in its omnidirectional mode - and scan-invariant radiation with a maximum deviation of only 0.8 dB in its directional mode..Note
Immediate accessISSN
0018-926XEISSN
1558-2221Version
Final accepted manuscriptSponsors
University of Technology Sydneyae974a485f413a2113503eed53cd6c53
10.1109/tap.2024.3373173