Gougheri Hesam Sadeghi, Kiani Mehdi
Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:4804-4807. doi: 10.1109/EMBC.2016.7591802.
This paper presents the optimal design and operation frequency (f) of an inductively-powered homecage for powering biomedical devices with millimeter (mm) dimensions, implanted inside the body of freely-behaving small animal subjects, for longitudinal behavioral neuroscience and electrophysiology experiments. In order to improve the power transmission efficiency (PTE) for powering mm-sized implants, the geometry of the multi-coil inductive links in the form of 3- and 4-coil links as well as fp need to be co-optimized. A simplified equation for the PTE of 3-coil inductive links for powering mm-sized implants has been derived, based on which the optimal geometries and fp of a 3-coil link have been found using a commercial field solver (HFSS). In simulations, the optimized 3-coil inductive link achieved a significant PTE of 2.56% at the optimal fp of 40 MHz for powering a 1 mm3 implant coil at the nominal height of 7 cm, thanks to the link and fp optimization as well as an intermediate coil in the receiver side with 18 mm diameter.
本文介绍了一种用于为毫米尺寸生物医学设备供电的感应供电式饲养笼的优化设计和工作频率（f），该设备植入自由活动的小动物体内，用于纵向行为神经科学和电生理学实验。为了提高为毫米尺寸植入物供电的功率传输效率（PTE），需要对三线圈和四线圈形式的多线圈感应链路的几何形状以及fp进行协同优化。推导了用于为毫米尺寸植入物供电的三线圈感应链路的PTE简化方程，并在此基础上使用商业场求解器（HFSS）找到了三线圈链路的最佳几何形状和fp。在模拟中，优化后的三线圈感应链路在40 MHz的最佳fp下，为标称高度7 cm处的1 mm³植入线圈供电时，实现了2.56%的显著PTE，这得益于链路和fp的优化以及接收器侧直径为18 mm的中间线圈。
