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本文概述了体波固体非色散延迟线设计方法,具体设计了一个工作于40兆赫延追100微秒的延迟线,且作了性能预计.在简单的条件下进行了工艺和工艺参数试验,得到了真空下热扩散铟焊接工艺,采用了换能器焊接后再加工工艺,提出并采用了频率特性测试仪检查换能器焊接质量以及监控换能器再研磨加工工艺过程的方法,成功地制作了设计的器件.本文还对器件主要参数的测试方法作了叙述,并给出了各种测试曲线以及和计算曲线的比较.器件已达到的指标是工作频率40兆赫、延迟200微秒、插入损耗12分贝,达到了预计的水平.
In this paper, the design method of bulk non-dispersive delay line is summarized, and a delay line with 100 microsecond delay at 40 MHz is designed and the performance is estimated. The process and process parameters are tested under simple conditions, A vacuum diffusion indium welding process, the use of the transducer after welding and then processing technology, the frequency characteristics of the tester is proposed and used to check the quality of the transducer welding and monitoring transducer re-grinding process, the successful production The design of the device.This article also describes the test method of the main parameters of the device, and gives a comparison of various test curves and calculation curves.The device has reached the target is the operating frequency of 40 MHz, 200 microsecond delay, the insertion Loss of 12 dB, reached the expected level.