Investigation of Transmission Efficiency on Short-range 4x4 MIMO WiCoPT System
Investigation of Transmission Efficiency on Short-range 4x4 MIMO WiCoPT System
复制标题
短距离 4x4 MIMO WiCoPT 系统传输效率研究
DOI：
10.1109/wpw54272.2022.9901357
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kenjiro Nishikawa
中科院分区：
文献类型：
--
作者：
Yotaro Watanabe;Shintaro Miya;Taishi Nara;Satoshi Yoshida;Shigeo Kawasaki;Kenjiro Nishikawa
本研究研究了短距离多输入多输出（MIMO）无线通信和功率传输（WiCoPT）系统，该系统可以使用相同的天线和频带同时传输信息和功率。具有2x2平面贴片天线的4x 4 MIMO系统用于发送和接收。先前的工作表明，所提出的WiCoPT系统可以实现高水平的传输容量和功率传输效率。此外，该系统显著提高了无定位能力。本文演示了测量的性能，并研究了输入和输出馈电电路（匹配电路）和传输效率之间的关系。研究表明，在MIMO控制下，存在一个最优匹配条件，以最大化传输效率。在传输距离为10 mm时，最大效率提升35点，传输效率为59%，对应的最大传输容量为52 bit/s/Hz。这些结果保证了可变匹配电路将有效地优化MIMO控制下的发射机和接收机之间的传播条件，从而获得高水平的传输特性。
This research has investigated the short-range Multi Input Multi Output (MIMO) Wireless Communication and Power Transfer (WiCoPT) system that can simultaneously transmit information and power using the same antenna and frequency band. A 4x4 MIMO system with 2x2 planar patch antennas is used for both transmission and reception. The previous work indicated the proposed WiCoPT system can achieve high-level transmission capacity and power transmission efficiency. In addition, the system significantly improved the positioning-free capability. This paper demonstrates the measured performances and investigates the relationship between the input and output feeding circuits (matching circuits) and the transmission efficiency. The investigation clarifies there is an optimal matching condition to maximize the transmission efficiency under the MIMO control. The maximum efficiency improvement of 35 points is achieved at a transmission distance of 10 mm, with a transmission efficiency of 59%, and the corresponding maximum transmission capacity of 52 bit/s/Hz. These results promise that a variable matching circuit will effectively optimize the propagation condition between the transmitter and the receiver under the MIMO control, resulting in high-level transmission characteristics.
通过射频/微波功率传输收集风能的绿色能源
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
Nose;K.;Y.Jono;S. Kawasaki
通讯作者：
S. Kawasaki
5G演进和6G
DOI：
10.1109/vlsitechnology18217.2020.9265094
发表时间：
2020
期刊：
2020 IEEE Symposium on VLSI Technology
影响因子：
--
作者：
Takehiro Nakamura
通讯作者：
Takehiro Nakamura
短距离MIMO通信传输方法研究
影响因子：
6.8
作者：
K. Nishimori;N. Honma;T. Seki;K. Hiraga
通讯作者：
K. Hiraga