无中频滤波器的宽带接收技术研究  

Research on Broadband receiving Technology without if filter

作　　者：莫飞凡 Mo Feifan(Zhuhai Gree Electric Appliance Co.,Ltd.,Zhuhai Guangdong,519060)

机构地区：[1]珠海格力电器股份有限公司

出　　处：《电子测试》2019年第19期54-55,共2页Electronic Test

摘　　要：以超外差方式进行宽带信号的接收,由于需要中频滤波器,接收机参数难以调整,且由于中频带宽限制,宽频接收时扫描时间较长。利用傅里叶变换直接对信号进行频谱分析的方式需要高性能的处理器及高速高精度的模数转换器,价格昂贵。本文提出了一种综合两种方式优点的宽带信号接收方式——无中频滤波器的宽带接收技术。Because of the need of if filter,the receiver parameters are difficult to adjust,and the scanning time of broadband reception is long because of the limitation of intermediate frequency bandwidth.Fourier transform is used to analyze the spectrum of the signal directly,which requires high performance processor and high speed and high precision analog-to-digital converter,which is expensive.In this paper,a broadband signal receiving method without if filter,which combines the advantages of the two methods,is proposed.

关 键 词：无中频滤波器 宽带信号接收 

分 类 号：TN9[电子电信—信息与通信工程]