现在无线局域网的应用越来越广泛，有效可靠的通信基础上，低能源消耗，是对天线设计提出的新要求。该书介绍了天线的种类、分集和合成技术等。-Now wider and wider application of wireless local area network, based on effective and reliable communications, low energy consumption, is the antenna design the new requirements. The

智能风扇调节系统源代码 通过人体红外传感器检测人群分布，调节风扇对人群集中地方集中送风，提高风扇的利用率，达到节能减排的目的。实现交直流电机调速，红外解码等功能-Smart Fan control system source code, infrared sensors to detect people through the distribution of the human body to regulate the local concentration of the fan of th