这里提出了工作在400兆赫至1300兆赫、延迟时间达到10微秒的超声延迟线的要求。在较高的频率用蓝宝石,在较低的频率用石英作延迟媒质,蒸发上CdS换能器已获得满意的延迟。给出了设计和制造的详细情况,同时也给出溅射ZnO换能器的实验性能。 Here we propose the requirement for an ultrasonic delay line that operates at 400 MHz to 1300 MHz with a delay time of 10 microseconds. At higher frequencies with sapphire, using quartz as the delay medium at lower frequencies, a satisfactory delay has been achieved by evaporating the CdS transducer. The design and manufacturing details are given, and the experimental performance of the sputtered ZnO transducer is also given.