为什么是无线射频模块？

　　为什么是无线射频模块？

　　今天，无线连接正迅速成为许多应用程序的首选功能。切断电线和动员设备的能力是吸引顾客的一大特点。对于勇敢的设计工程师来说，在新的或现有的产品中添加无线技术是一项艰巨的任务，本文讨论的问题是“我应该设计它，还是应该购买一个现成的预先认证的模块？”“让我们看看选择和后果的每个。

　　加入无线功能

　　无线通信涉及到电磁频谱，具有许多独特的性质。无线电波按光谱的波长传播。天线提供了与电波的阻抗匹配。市场上有很多无线设备的选择。要使用的选择取决于频率、调制和数据编码。

　　To design or not to design—that is the question. Is it better to design a solution or buy a ready-made， pre-certified module？ Wireless ICs range in price from $1 to $5 each， depending upon the quantity and complexity of the device. Design engineers evaluate total system cost—that is to say， all of the components surrounding the IC—if they decide to design a wireless solution themselves. Wireless modules provide a choice of a wireless solution and range in cost from $10 to $100 each， depending upon the quantity and complexity.

　　At first， the wireless module appears to cost more than the design solution. Let’s take a look at what is behind the system costs.