摘要
针对软件无线电系统的灵活性,要求射频前端接收机能够工作在相当宽的频率范围。提出了一种应用在软件无线电电台的宽频段接收机的设计方案,分析了3次混频方案的合理性,详细描述了方案中各模块的作用,并对整个系统进行了建模和仿真验证。系统仿真性能显示该方案具有良好的选择性、中频增益和小于5 dB的噪声系数。
The flexibility for software radio systems require RF front-end receiver is able to work in quite a wide frequency range. This paper presents a design scheme for wideband receiver in the software radio broadcasting stations. The nationality of three-frequency mixing method is analyzed and validated. The function of each module in the design scheme is described in detail in this paper. Then the modeling and simulation of the whole system is proceeded. The results show that this design scheme has a good selectivity, IF gain and noise figure is less than 5dB.
出处
《电子设计工程》
2010年第8期13-15,共3页
Electronic Design Engineering
基金
广西信息与通讯技术重点实验室基金项目(10911
10913
10904)
关键词
软件无线电
宽带接收机
建模和仿真
低噪声系数
software radio
wideband receiver
modeling and simulation
low noise factor
