A magnetoelectric antenna (ME) can exhibit the dual capabilities of wireless energy harvesting and sensing at different frequencies. In this article, a behavioral circuit model for hybrid ME antennas is described to emulate the radio frequency (RF) energy harvesting and sensing operations during circuit simulations. The ME antenna of this work is interfaced with a CMOS energy harvester chip towards the goal of developing a wireless communication link for fully integrated implantable devices. One role of the integrated system is to receive pulse-modulated power from a nearby transmitter, and another role is to sense and transmit low-magnitude neural signals. The measurements reported in this paper are the first results that demonstrate simultaneous low-frequency wireless magnetic sensing and high-frequency wireless energy harvesting at two different frequencies with one dual-mode ME antenna. The proposed behavioral ME antenna model can be utilized during design optimizations of energy harvesting circuits. Measurements were performed to validate the wireless power transfer link with an ME antenna having a 2.57 GHz resonance frequency connected to an energy harvester chip designed in 65nm CMOS technology. Furthermore, this dual-mode ME antenna enables concurrent sensing using a carrier signal with a frequency that matches the second 63.63 MHz resonance mode. A wireless test platform has been developed for evaluation of ME antennas as a tool for neural implant design, and this prototype system was utilized to provide first experimental results with the transmission of magnetically modulated action potential waveforms.

中文翻译：

---

用于植入式神经设备的混合磁电天线无线传感和能量收集的电路级建模和仿真

磁电天线（ME）可以展现无线能量收集和不同频率传感的双重能力。本文描述了混合 ME 天线的行为电路模型，用于在电路仿真期间模拟射频 (RF) 能量收集和传感操作。这项工作的 ME 天线与 CMOS 能量采集器芯片连接，旨在为完全集成的植入设备开发无线通信链路。该集成系统的一个作用是从附近的发射器接收脉冲调制功率，另一个作用是感测和传输低幅度的神经信号。本文报告的测量结果首次证明了使用一根双模 ME 天线在两个不同频率下同时进行低频无线磁传感和高频无线能量收集。所提出的行为 ME 天线模型可以在能量收集电路的设计优化期间使用。进行测量以验证无线功率传输链路，其中 ME 天线具有 2.57 GHz 谐振频率，连接到采用 65 nm CMOS 技术设计的能量收集器芯片。此外，该双模 ME 天线能够使用频率与第二个 63.63 MHz 谐振模式匹配的载波信号进行并发感测。我们开发了一个无线测试平台，用于评估 ME 天线作为神经植入设计的工具，并且利用该原型系统通过磁调制动作电位波形的传输提供第一个实验结果。