⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种毫米级、完全无线的植入式运动装置，通过结合高效电磁推进和无线功率传输技术，解决了体内运动设备的高功耗和供电难题。该系统利用低频GHz无线功率传输在组织中实现最佳效率，并支持远程控制。
Fully autonomous implantable systems with locomotion can revolutionize medical technology, and include applications ranging from diagnostics to minimally invasive surgery. However, the extreme power requirements of fluid locomotion impose significant design challenges. Using highly efficient and scalable electromagnetic propulsion systems [1], these locomotive devices become possible. Recent work shows that mm-sized antennas in tissue achieve optimal power transfer efficiency in the low-GHz range [2]. Combining this power transfer method with the highly efficient propulsion, a fully wireless locomotive implant capable of moving at 0.53cm/s has been realized in 65nm CMOS with a 2mm x 2mm receive antenna and a 0.6x1mm2 die size with a 2W 1.86GHz carrier. The design consists of an RF frontend, bandgap reference, regulator, demodulator, digital control, and configurable high-current drivers for the propulsion system
Anatoly Yakovlev, Daniel Pivonka, Teresa Meng, Ada Poon
Stanford University, Stanford, CA