School of Electrical and Computer Engineering and the Institute of Communications and Computer Systems, National Technical University of Athens, Athens 15780, Greece.
IEEE Trans Biomed Eng. 2012 Nov;59(11):3140-7. doi: 10.1109/TBME.2012.2202659. Epub 2012 Jun 5.
We address numerical versus experimental design and testing of miniature implantable antennas for biomedical telemetry in the medical implant communications service band (402-405 MHz). A model of a novel miniature antenna is initially proposed for skin implantation, which includes varying parameters to deal with fabrication-specific details. An iterative design-and-testing methodology is further suggested to determine the parameter values that minimize deviations between numerical and experimental results. To assist in vitro testing, a low-cost technique is proposed for reliably measuring the electric properties of liquids without requiring commercial equipment. Validation is performed within a specific prototype fabrication/testing approach for miniature antennas. To speed up design while providing an antenna for generic skin implantation, investigations are performed inside a canonical skin-tissue model. Resonance, radiation, and safety performance of the proposed antenna is finally evaluated inside an anatomical head model. This study provides valuable insight into the design of implantable antennas, assessing the significance of fabrication-specific details in numerical simulations and uncertainties in experimental testing for miniature structures. The proposed methodology can be applied to optimize antennas for several fabrication/testing approaches and biotelemetry applications.
我们探讨了用于医疗植入式通信服务频段（402-405MHz）生物医学遥测的微型植入式天线的数值与实验设计和测试。最初提出了一种用于皮肤植入的新型微型天线模型，其中包括各种参数来处理特定于制造的细节。进一步提出了一种迭代设计和测试方法，以确定最小化数值和实验结果之间偏差的参数值。为了辅助体外测试，提出了一种低成本技术，用于在无需商业设备的情况下可靠地测量液体的电特性。在微型天线的特定原型制造/测试方法中进行了验证。为了在提供通用皮肤植入天线的同时加快设计速度，在典型皮肤组织模型内进行了研究。最后在解剖头部模型内评估了所提出天线的谐振、辐射和安全性能。本研究为植入式天线的设计提供了有价值的见解，评估了数值模拟中特定于制造的细节以及微型结构实验测试中的不确定性的重要性。所提出的方法可以应用于优化几种制造/测试方法和生物遥测应用的天线。
