SBIR Phase I: Low Noise Loosely-Coupled Wireless Power Transfer System with Single Transistor Differential Drive

这项小型企业创新研究（SBIR）第一阶段项目旨在开发一种能够为中远程无线电力输送系统提供动力的差动驱动系统。传统的驱动电路会产生大量的噪声和干扰，妨碍无线传输系统的正常运行。由于无线电源系统的传输功能，这种噪声和干扰的影响是显著的，并限制了大多数无线电源系统的可用性。差分驱动电路用于为无线电力发射机供电，依靠振荡信号在发射机和接收机之间传输电力，从而大大降低了噪声。这种振荡降低了每个振荡的噪声幅度，但更显著对，因此抵消了整个系统产生的噪声。通过仔细的调谐和校准，这些振荡是相关的，消除了噪声并减少了产生的噪声。设计一个差动驱动器来为电路供电，允许各种无线电源系统满足所有监管要求，并在不过度干扰的情况下向手机和其他电子系统传输电力。该项目的更广泛的影响/商业潜力是允许广泛采用和集成无线电力传输系统。先前对无线电源商业开发的限制受到监管限制和这些系统产生的过多噪声的限制。使用差动驱动，可以开发各种发射器和应用程序，并增加无线电源的潜在范围。除了通过监管要求外，差动驱动系统还允许将无线电源接收器集成到各种电子手持设备中，这在以前是不可能的。差动驱动器将减少干扰，这样以前的应用程序，如移动电话，笔记本电脑和其他手持设备现在可以无线供电。这个项目的意义是什么？美国的目标在扩大无线电源的范围和可用性方面意义重大。噪音和干扰的减少将提高无线电源系统的可用性，并增加在消费和军事电子领域的采用。

This Small Business Innovation Research (SBIR) Phase I project is intended to develop a differential drive system capable of powering a mid- to long-range wireless power delivery system. Conventional drive circuits create significant quantities of noise and interference that prohibits the proper operation of wireless delivery systems. Due to the transmitting function of a wireless power system, the implications of this noise and interference are significant and limit the usability of most wireless power systems. A differential drive circuit used to power the wireless power transmitter greatly reduces noise by relying on an oscillating signal to transmit power between transmitters and receivers. This oscillation reduces the magnitude of noise of each oscillation, but more significantly pairs and therefore cancels noise generated system as a whole. With careful tuning and alignment, these oscillations are correlated, canceling the noise and reducing the noise generated. Designing a differential drive to power the circuit allows a variety of wireless power systems to meet all regulatory requirements and transmit power to handsets and other electronic systems without excessive interference. The broader impact/commercial potential of this project is to allow for widespread adoption and integration of wireless power delivery systems. Prior limitations on commercial exploitation of wireless power have been limited by regulatory limitations and the excessive noise created by these systems. Using a differential drive, permits a variety of transmitters and applications to be developed, as well as increase the potential range of wireless power. In addition to passing regulatory requirements, the differential drive system permits wireless power receivers to be integrated into a variety of electronic hand-sets that were previously impossible. The differential drive will reduce interference, such that prior applications such as mobile phones, laptops, and other handhelds can now be powered wirelessly. The implications of this project?s goals are significant in expanding the range and usability of wireless power. Reductions in noise and interference will improve usability of wireless power systems, and increase adoption in both the consumer and military electronics fields.