4.6 Article

A Multi-Polarization Series-Fed Antenna Array Based on Eccentric Ring

期刊

IEEE ACCESS
卷 11, 期 -, 页码 23217-23226

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2023.3246054

关键词

Antenna arrays; Polarization; MIMO communication; Antennas; Switches; Microstrip antenna arrays; Antenna radiation patterns; Antenna; multi-polarization; traveling-wave series-fed; eccentric ring; circular array

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This paper presents a multi-polarization series-fed antenna operating at 10 GHz. Patch elements built by eccentric rings enable circular polarization performance. The dual-port feeding enables polarization switching. The antenna can achieve right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), and linear polarization (LP) by proper feeding. The antenna polarization can be changed without switch controlling. The antenna features a compact structure due to the circular array arrangement. The measured axial ratios are lower than 3dB and |S-21| is lower than -14 dB within the specified bandwidth. A compact 4 x 4 MIMO array is designed and simulated, and the circular array is processed and measured, showing good agreement between experimental and simulation results.
A multi-polarization series-fed antenna working at 10 GHz is presented in this paper. The patch elements are built by eccentric rings which can realize the performance of circular polarization. The dual-port feeding allows us to switch the polarization of the antenna. The right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), and Linear polarization (LP) polarization can be realized by properly feeding form. The changing of antenna polarization without switch controlling. Owing to the circular array arrangement, the antenna can form a compact structure. The key features of this array are multi polarization and traveling-wave series-fed performance. The axial ratios are lower than 3dB measured. The |S-21| is lower than -14 dB in the mentioned bandwidth. Then, a 4 x 4 MIMO array which has compact structure is designed and simulated. The circular array is processed and measured. The experimental and simulation results are in good agreement.

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