一种适用于高频信号的间接可编程陷波技术

在对现有的可编程滤波器件进行综合分析的基础上,提出了一种新型的可编程陷波技术.该技术采用二次线性频谱搬移,仅在较低频段使用一个高Q值的带阻滤波器,即可在较大频带范围内对信号实施间接的可编程陷波.该技术尤其适用于高频信号,阻带中心频率越高,其覆盖的工作频带越宽.从理论上详细分析了该技术的工作原理以及适用条件,并以具体实验电路加以验证.

The Technology of Indirect Programmable Trapping Wave Applied to High Frequency Signals

Basing on the comprehensive analysis of the programmable filter, it presents the new technology indirect programmable trapping wave. In this method, the technology of linear frequency spectrum convert has been used two times. At the same time it only uses a high Q BRF in relatively lower frequency, this indirect programmable trapping wave in wide range of higher frequency will be accomplished. This technology is much fit for high frequency signals. In theoretically, the pivot frequency of resister band is higher, the range of working frequency is wider. This paper theoretically analyzes the working principle and applied conditions of the method and experimentally testifies the feasibility with the model circuit.