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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2020 Vol.21 No.1 P.128-143
Analysis and design of novel wideband and high efficiency millimeter-wave antenna arrays for 60-GHz applications
Abstract: A type of millimeter-wave antenna array with flexible design is proposed for a variety of applications at 60 GHz. The antenna array can be adjusted to be linearly or circularly polarized by simply changing the radiation part of the antenna array. High gain, wideband, and high radiation efficiency characteristics can be achieved by adopting a low insertion loss feeding network and broadband antenna elements. For the linearly polarized antenna array, simulation results show that the impedance bandwidth of the 2×2 antenna subarray reaches 21.6%, while the maximum gain achieves 15.1 dBi and has a fluctuation of less than 0.4 dBi within the working bandwidth. Simulation results of the 8×8 linearly polarized antenna array show a bandwidth of 21.6% and a gain of (26.1±1) dBi with an antenna efficiency of more than 80%. For the 8×8 circularly polarized antenna array, simulation results show that an impedance bandwidth of 18.2% and an axial ratio (AR) bandwidth of 13.3% are obtained. Gain and efficiency of up to 27.6 dBi and 80% are achieved, respectively. A prototype of antenna array is fabricated, and results are compared and analyzed.
Key words: 60 GHz, Antenna array, Linearly polarized, Circularly polarized, Millimeter-wave
1北京邮电大学电子工程学院安全生产智能监控北京市重点实验室，中国北京市，100876
2东京工业大学电气与电子工程系，日本东京市，152-8552
3伦敦大学玛丽女王学院电子工程与计算机科学学院，英国伦敦市，E14NS
摘要：提出一种适用于60 GHz应用且具有灵活设计的毫米波天线阵列。通过简单地改变天线阵列的辐射部分，可将天线阵列调整为线极化或圆极化。通过采用低插入损耗馈电网络和宽带天线单元，可实现高增益、宽带和高辐射效率特性。对于线性极化天线阵列，仿真结果表明，2×2天线子阵列的阻抗带宽达到21.6%，最大增益达到15.1 dBi，并且在工作带宽内波动小于0.4 dBi。对于8×8线极化天线阵列，仿真结果显示带宽为21.6%，增益为(26.1±1) dBi，天线效率超过80%。对于8×8圆极化天线阵列，仿真结果表明，阻抗带宽为18.2%，轴比（AR）带宽为13.3%。增益和效率分别达到27.6 dBi和80%。同时进行了天线阵列实物加工测试，并比较和分析结果。
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DOI:
10.1631/FITEE.1900461
CLC number:
TN82
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On-line Access:
2020-02-27
Received:
2019-09-02
Revision Accepted:
2019-12-30
Crosschecked:
2020-01-06