Research And Implementation Of Short Distance Communication Module Based On ADF7021

Compared with wired communication, wireless communication has no wiring, low cost,adaptable, easy to maintain. With the development of wireless communication technology,various wireless communication products are widely used in various fields. Wirelesscommunication plays a very important role in the so called “information age”.First, This paper introduces the Bluetooth, infrared, Zigbee, Wi-Fi, UWB, micro-powershort-distance wireless communications technology, and compares these types of short-rangecommunications technology, then studies the key techniques of each functional modules andthe structure in the current mainstream, eventually proposes a short-distance wirelesscommunication implementation based on ADF7021RF chip.Second, this paper completes the hardware circuit design and the simulation. Accordingto the defects of other wireless system, this paper has introduced the power amplifier, lownoise amplifier and filter circuit in the hardware, then described the design and simulation ofthe two-stage low noise amplifier and the filter circuit detailedly.Then, this paper completes the software design of the system. In order to reduce BER ofthe module, the paper adds error control function in software design and achieves convolutioninterleaving of the data.Finally, the module has been fully tested and gets the key parameters of the module. Thetest results and feedback results show that: the module designed is running stably and reliably,reaches the design request, and make up for defects of others, and has great applications.