调整、充电:RF能量收集显示它的潜力
在当今无线互联的世界中,环境射频能量无处不在。从技术上讲,这种自由流动的能量可以被捕获、转换和储存,以便在其他应用中使用。事实上,它已经在一些超低功耗,无电池的应用,如RFID标签,非接触式智能卡,无线传感器网络中使用。由于技术的进步,获得的RF能源刚刚开始实现其更大的潜力,包括在智能手机和其他便携式设备中充电电池。这些使能技术包括射频收发器、电源转换威廉希尔官方网站 和超低功耗微控制器,所有这些都变得越来越高效。
Figure 1: Nokia has been researching wireless recharging technology, including RF energy harvesting, since 2009.
This article reviews the state-of-the-art of RF energy harvesting, current and emerging applications, and considers some of the recent product introductions in this sector. These include energy harvesting development kits that support RF energy harvesting, such as the M24LR EEPROM with RF interface, and associated Discovery evaluation kit fromSTMicroelectronics; XLP 8-bit and 16-bit microcontroller-based energy harvesting development kits from Microchip; and a range of RFID devices and development kits from Texas Instruments, based on the MSP430 range of ultra low power microcontrollers.
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