期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 4, 页码 3082-3087出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2021.3118794
关键词
Antenna array; circularly polarized (CP); curl antenna; fifth-generation (5G); millimeter-wave (mmW); staircase; wideband
资金
- National Natural Science Foundation of China [61801050]
- National Natural Science Foundation of China for Outstanding Young Scholars [62022064]
- National Key Research and Development Project [2017YFE0128200]
- Beijing Key Laboratory of Work Safety Intelligent Monitoring (BUPT)
In this paper, a low-profile circularly polarized (CP) staircase curl antenna array is proposed for fifth-generation (5G) millimeter-wave (mmW) communications. The proposed antenna array overcomes the drawback of complex multilayer structure and demonstrates promising performance.
In this communication, a low-profile circularly polarized (CP) staircase curl antenna array with 2:1 impedance bandwidth and 50% axial ratio (AR) bandwidth is proposed for fifth-generation (5G) millimeter-wave (mmW) communications. It overcomes a vital drawback of complex multilayer structure of the wideband CP antenna array. By fully taking advantage of 3-D staircase layout, the curl element achieves 2:1 impedance bandwidth, 57.9% AR bandwidth, and a maximum gain of 7.4 dBic. Accordingly, benefiting from the tapered matching transformer, a single-layer full-corporate microstrip feeding network with 111.4% impedance bandwidth is constructed. For demonstration, an 8x8 staircase curl antenna array is designed on three-layer PCB laminates. The proposed antenna array is measured with an impedance bandwidth of 76.9% (20.0-45.0 GHz) and an AR bandwidth of 53.6% (23.1-40.0 GHz), demonstrating a promising candidate to be used in 5G mmW communications.
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