Performance Evaluation of Magnetic Resonance Coupling Method for Intra-Body Network (IBNet)
Performance Evaluation of Magnetic Resonance Coupling Method for Intra-Body Network (IBNet)
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DOI：
10.1109/tbme.2021.3130408
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发表时间：
2022-06-01
影响因子：
4.6
通讯作者：
Kim，Albert
中科院分区：
文献类型：
--
作者：
Islam，Sayemul;Gulati，Rajpreet Kaur;Kim，Albert
对新兴医疗设备的有效管理可以为医疗保健带来新的见解。因此，人体通信（HBC）变得越来越重要。在本文中，我们提出了磁共振（MR）耦合作为体内网络（IBNet）的一种有前途的方法。该研究揭示了MR耦合可以有效地在生物组织中发送或接收信号，最大路径损耗为33 dB（即在13.56 MHz处），低于其他方法（例如，电流、电容或RF）。发射器和接收器线圈在短距离和长距离处的角取向也示出了路径损耗的微小变化（0.19 - 0.62 dB），但更多地依赖于距离（0.0547 dB/cm）。此外，在MR耦合期间的不同姿势基本上不影响路径损耗（0.21 dB）。在多节点传输场景中，MR耦合表明两个节点可以同时接收信号，在60 cm和100 cm距离处分别具有-16.77dBm的损耗。这种多节点MR传输可以用于通信、感测和供电可穿戴和可植入设备。
Effective management of emerging medical devices can lead to new insights in healthcare. Thus, human body communication (HBC) is becoming increasingly important. In this paper, we present magnetic resonance (MR) coupling as a promising method for the intra-body network (IBNet). The study reveals that MR coupling can effectively send or receive signals in biological tissue, with a maximum path loss of33 dB (i.e. at 13.56 MHz), which is lower than other methods (e.g., galvanic, capacitive, or RF) for the same distance (d = 100 cm). The angular orientation of the transmitter and receiver coils at short and long distances also show a minor variation of the path loss (0.190.62 dB), but more dependency on the distance (0.0547 dB/cm). Additionally, different postures during the MR coupling essentially does not affect path loss (0.21 dB). In the multi-nodal transmission scenario, the MR coupling demonstrates that two nodes can simultaneously receive signals with -16.77 dBm loss at 60 cm and 100 cm distances, respectively. Such multi-node MR transmission can be utilized for communication, sensing, and powering wearable and implantable devices.