6.7GHz～7.9GHz UWB室内定位接收机射频端设计

Design of 6.7 GHz～7.9 GHz UWB Indoor Localization RF Receiver

针对超宽带室内定位接收系统,为解决超宽带信号采样率高的难题,提出了一种新颖的、易实现的非相干检测数模混合结构的接收方案。与其他接收方案相比,该方案采用可控积分检测电路作为系统的A/D转换部分,不仅完成了信号检测,还实现了射频电路与数字基带电路的完美结合。在电路射频端的实现与性能分析的基础上利用ADS进行仿真,并实现了该积分检测电路的实物设计与性能测试,将测试结果与仿真结果进行比较,验证了该电路设计的可行性。

A novel and realizable scheme of non-coherent digital-analog mixed receiver detection is proposed to solve the problem of high signal sampling rate according to Ultra wideband indoor positioning receiver system. Compared it with other schemes, the scheme adopts the controllable integral detection circuit as the A/D conversion section, which realized the ideal-combination of RF circuit and digital base-band circuit and also solved detection of the received signal. The soft of ADS has been used to simulate the performance based on the analysis of RF circuit, and the object of integral detection circuit has been designed and tested. Finally the scheme of circuit is verified fea- sibly by comparing the result between simulation and test.