期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 65, 期 6, 页码 3217-3220出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2017.2689069
关键词
Broadband; dual circularly polarized (CP); U-shaped slot antenna
资金
- National Natural Science Foundation of China [61271416, 61301093, 61401365]
- Fundamental Research Funds for the Central Universities [GEKY8002]
In this communication, a novel broadband dual circularly polarized (CP) antenna is presented. This antenna consists of an U-shaped slot to achieve broadband CP radiation and two 50-Omega microstrip-fed ports to realize both right-hand circular polarization and left-hand circular polarization at the same frequency band. The axial ratio bandwidth (ARBW) is greatly broadened by moving the feeding ports to upper portion of the U-shaped slot. To verify this design, the proposed antenna is fabricated and measured. The measured -10 dB reflection coefficient bandwidth is about 114.4% (1.80-6.61 GHz) and the 3-dB ARBW is approximately 110.5% (1.83-6.35 GHz). The isolation between two ports is better than 14.8 dB within the ARBW.
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