用于 SLF 通信的弱耦合紧凑型磁摆阵列天线

IF 4.6 1区 计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Zhaoqiang Chu;Wei Dan;Shizhan Jiang;Chenyuan Yu;Kewen Dong;Yuzhu Ren;Zelin Du;Jianming Sun;Da Yi;Shuxiang Dong
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引用次数: 0

摘要

设计便携高效的超低频发射机一直是一个挑战。在这里,我们提出了一种紧凑的弱耦合磁摆阵列(MPA),用于SLF波段的高效传输。首先建立了摆动磁体产生磁场的解析表达式。理论计算和实验结果表明,MPA机组的平均功率为0.22 W,最大摆角为43.84°。在此基础上,构建了三种一维阵列结构,并通过有限元方法对天线单元之间的静态和动态磁耦合进行了比较。在此基础上,对三种一维阵列的谐振频率、功耗和辐射性能进行了实验研究。在65 Hz的驱动频率下,我们优化的一维阵列在自由空间2 m距离处的通量密度达到137 nTpk (1100 fTpk @100 m)。它的紧凑尺寸为$19\ × 6\ × 2.2$ cm3,性能值(FOM_1)计算为5560 A2m/W。最后,二值移幅键控(BASK)和二值移相键控(BPSK)信号通过优化后的MPA传输。实验证明了该系统的可靠通信距离为22米,数据速率为4比特/秒。其用于评估通信性能的FOM_2高达169.2 b/s/(m $^{2}\cdot $ Hz),几乎是其他MPAs的8倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Weak-Coupling and Compact Magnetic Pendulum Array Antenna for SLF Communication
It is always a challenge to design a portable and efficient super low frequency (SLF) transmitter. Here, we propose a compact and weakly coupled magnetic pendulum array (MPA) for efficient transmission in the SLF band. Analytic expressions for the fields generated by a swinging magnet are first established. Based on theoretical calculation and experimental results, the average power and the maximum swinging angle for an MPA unit are found to be 0.22 W and 43.84°, respectively. Then, three kinds of 1-D array structures are constructed, and both the static and the dynamic magnetic coupling between the antenna units are compared via finite element method (FEM). On this basis, the resonance frequency, the power consumption, and the radiation capability of three kinds of 1-D arrays are experimentally studied. The measured flux density at a 2 m distance in free space reaches 137 nTpk (1100 fTpk @100 m) under the driving frequency of 65 Hz for our optimized 1-D array. It has a compact dimension of $19\times 6\times 2.2$ cm3 and the figure of merit (FOM_1) is calculated to be 5560 A2m/W. Finally, both a binary amplitude-shift keying (BASK) and a binary phase shift keying (BPSK) signal are transmitted through the optimized MPA. Reliable communication with a distance of 22 m and a data rate of 4 bit/s is experimentally demonstrated. Its FOM_2 for assessing the communication performance is as high as 169.2 b/s/(m $^{2}\cdot $ Hz), which is almost eight times the value of other MPAs.
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来源期刊
CiteScore
10.40
自引率
28.10%
发文量
968
审稿时长
4.7 months
期刊介绍: IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques
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