摘要
YIG调谐滤波器(YTF)作为预选器广泛应用于现代频谱分析仪中,对高频段的带外和镜像响应进行有效的抑制。传统的预选器调整都通过梳状信号发生器完成。提出了一种新的自动调整算法,能有效的对由温度引起的预选器调谐频率变化进行补偿。详细介绍了该算法的推导,并通过一组实测数据验证了该方法的有效性。最后对本方法的局限性进行了说明。
YIG turning filter （YTF） used as pre-selector are widely applied in modern spectrum analyzers to reject spurious responses. Traditional way of adjust pre-selector is accomplished with comb signal generator. A novel method is introduced to compensate the error caused by temperature drift. The deducing of method is discussed in details. A group of actual data proved the validity of this method. At last, the limitation of this method is illuminated.
出处
《科学技术与工程》
2009年第15期4483-4486,共4页
Science Technology and Engineering
