STUDIES ON DOUBLE DISPERSIVE SAW PULSE COMPRESSION FILTER

Pulse Compression Filter Group

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STUDIES ON DOUBLE DISPERSIVE SAW PULSE COMPRESSION FILTER

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- STUDIES ON DOUBLE DISPERSIVE SAW PULSE COMPRESSION FILTER
- Acta Electronica Sinica Issue 3, Pages: 52-62(1979)
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- Published：1979
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[1]中国科学院声学研究所脉压线组.双色散声面波脉冲压缩滤波器的研究[J].电子学报,1979(03):52-62.

Pulse Compression Filter Group. STUDIES ON DOUBLE DISPERSIVE SAW PULSE COMPRESSION FILTER[J]. Acta Electronica Sinica, 1979, (3): 52-62.
[1]中国科学院声学研究所脉压线组.双色散声面波脉冲压缩滤波器的研究[J].电子学报,1979(03):52-62. DOI：

Pulse Compression Filter Group. STUDIES ON DOUBLE DISPERSIVE SAW PULSE COMPRESSION FILTER[J]. Acta Electronica Sinica, 1979, (3): 52-62. DOI：

摘要

本文对双色散结构的声面波脉冲压缩滤波器给出了一种方法比较严格、运算比较简捷的新的理论分析方法。其依据是

发射换能器所幅射的声脉冲和接收换能器相重迭的区域

随时间而变化。文中用此法预计了加权方式、收口长度、断指等因素对器件性能的影响

并作了实验验证。还就中心频率为60MHz

带宽为12 MHz

时延分别为7μs和12μs的两种脉冲压缩滤波器的研制结果作了介绍。

Abstract

Based on the fact that superimposed region of ultrasonic pulses by transmitting IDT and by receiving IDT is variable with time

a new theoretical method has been found to analyze double dispersive SAW devices. Using this simple and exact method

the effects of weighting manner

taper length and cutting digit on devices performances have been both theoretically and experimetally investigated. Two types of compression filters with center frequency of 60MHz

bandwidth of 12MHz and time delay cf 7μs to 12μs have been reported.

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