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USB简化射频链路设计
开发连接的无线应用程序需要两个主要任务。首先，您的设计必须执行指定的功能，第二，它必须与主机PC、笔记本、平板电脑或智能手机通信。
在广受欢迎的RS-232端口是可用的，一个简单的3线接口是所有需要连接外设，数据连接、I/O、传感器和更多的主机。通常，几百甚至一千英尺低成本的电线允许可靠的点对点通信。
简单的平行式并行端口是从PC容易到你的接口板，得到8位输出块的另一种简单的方法。就新设备而言，这两个接口已经几乎绝迹了。
相反，Wi-Fi，ZigBee，6LoPAN，RF4CE，蓝牙和其他无线协议是引导我们进入一个世界，连接电缆都是过去的事。虽然有些标准集成到主板、智能手机和其他类似的设备中，但有些插件可以作为插件模块，为您的设计提供必要的功能。
As you will want to have a universal and reliable communicaTIons scheme when developing either a stand-alone wireless applicaTIon or one that is available as a plug-in module, USB may be the ideal choice, parTIcularly since PCs and advanced microcontrollers support USB directly,
This arTIcle discusses the use of USB as an RF link and development mechanism for wireless design applications. It examines off-the-shelf USB-to-RF modules, as well as example development platforms that demonstrate wireless reference designs through USB connectivity. The latter products let you use USB connectivity to provide control and access to development platforms so you can custom tailor your own wireless solution.
