带改进AGC系统的IR-UWB无线定位接收机的设计与实现

The design and realization of the impulse radio ultra-wideband positioning receiver which equipped with improving AGC system

给出一种带自动增益控制(AGC)环路的IR-UWB无线定位系统非相干接收机。为了使各个接收机不因多径效应或发射机距离远近的改变而引起幅度变化,在接收机中引入AGC模块,通过对连续工作方式下的AGC进行改进,使之能够工作在非连续的IR-UWB脉冲方式下,并通过硬件设计与实现证明了这种改进的AGC环路工作稳定,接收机用于室内定位系统,能够达到保持幅度平稳、减少抖动、提高定位精度的要求。

This thesis provided a kind of non-coherent receiver with a loop circuit of AGC tot IR-UWB wireless location system. To avoid the multipath effect and the variation of amplitudes due to the different distances of transmitters, and to keep the amplitude stable, the tremble minimum and the position accuracy in the indoor location system, we draw the AGC module into the receiver in this paper and explained how to meliorate AGC under the continuous working condition for working in the discontinuous IR-UWB pulse mode. Finally, we proved that the improved AGC loop can work stably through tire hardware designing and implementation, and the receiver can be used in indoor positioning.