亚洲知识产权资讯网为知识产权业界提供一个一站式网上交易平台，协助业界发掘知识产权贸易商机，并与环球知识产权业界建立联系。无论你是知识产权拥有者正在出售您的知识产权，或是制造商需要购买技术以提高操作效能，又或是知识产权配套服务供应商，你将会从本网站发掘到有用的知识产权贸易资讯。

返回搜索结果

High Data-rate Bi-directional CMOS Power/Data Link For Implanted Medical Devices

详细技术说明: Presented here is a power/data telemetry IC with a new data modulation scheme and simultaneous power transfer through a single inductive link. Data-driven synchronized single-cycle shorting of the secondary LC tank conserves reactive power while inducing an instantaneous voltage change at the primary side. Cyclic on-off keying time-encoded symbol mapping of the shorting cycle allows transmission of two data bits per four carrier cycles with simultaneous power transfer during non-shorting cycles. All timing control signals for rectification and data transmission are generated from a low-power clock recovery comparator and 22-phase 2x PLL. The 1-mm2 65-nm CMOS IC delivers up to 6.3-mW power and transmits 6.78-Mbps data with a BER of less than 5.9×10-7 over a single 1-cm 13.56-MHz inductive link. Figure (a) System Diagram Figure (b) Chip micrograph

*Abstract: Implanted medical devices (IMDs) employing bio-signal recording and transcutaneous transmission require a high data rate for the uplink while also being powered wirelessly e.g., intracranial multi-channel ECoG recording. Load Shift Keying (LSK), a widely used modulation scheme for uplink data telemetry, trades off power transfer and data-rate based on the inductive coil’s quality factor Q. High power transfer efficiency requires high Q, normally restricting the data rate. Data rates of 100-500 kbps with simultaneous power transfer have been achieved by LSK, and a few Mbps using multiple dedicated inductive links for data transfer and power transfer have also been realized. Further, using transient response from phase shifts by shorting the secondary LC tank for a half cycle achieves near 1-Mbps data rate with power transfer over single inductive link. However, this scheme loses energy whenever shorting the LC tank because of the subsequent reversal of LC resonance and the recovery time after transmitting one bit limits the data rate. Approaches using higher RF bands require additional complexity in circuits and antenna structures.

*Principal Investigation: Name: Gert Cauwenberghs
Department:

Name: Sohmyung Ha
Department:

欲了解更多信息，请点击这里