Chirp傅里叶变换器  

Chirp Fourier Transformer

作　　者：彭江陵[1] 刘积学[1] 张峥嵘[1] 周平[1] 杜明熙[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2005年第1期4-6,共3页Piezoelectrics & Acoustooptics

摘　　要：傅里叶变换是信号分析的基础,该文从傅氏变换基本公式出发,介绍了如何利用声表面波chirp器件实现实时傅氏变换器的方法,同时给出了分析带宽大于40MHz的样品对不同信号的测试波形图。文中进一步探讨了提高分析带宽和瞬时动态的措施。Fourier Transform(FT)is the foundiation for signal anaysis. Based on the primary equations of FT,a SAW Chirp device can be realized by FT transducer. A sample device with 40 MHz bandwidth or more and its tested waveforms for different signals are also given. Methods to further improve the bandwidth and instantaneous dynamics are discussed in the paper.

关 键 词：延迟线 声表面波 傅里叶变换 压缩接收机 

分 类 号：TN65[电子电信—电路与系统]