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声表面波器件除了用于雷达、通讯和电子对抗的军用设备以外,近年来又开始广泛地用于民用电子设备中.声表面波滤波器是民用电子设备中用得最多、最广泛的声表面波器件.比较成功的如用于电视接收机的电视中频滤波器,立体声收音机、录音机的10.7MHz滤波器,电视发射机的残余边带滤波器,电视图象解调器的奈氏滤波器,电视差转机的滤波器,频道显示系统的梳齿状滤波器,电视微波接力系统的滤波器和电缆电视滤波器等.据报导,目前全世界每年生产各类声表面波滤波器的数量已达数千万件以上.为使广大读者更进一步了解其发展趋势,本刊就声表面波民用滤波器的国外发展概况以及这类滤波器的特点、原理及应用情况等安排了一个技术讲座.将连续发表有关文章.
In addition to military equipment for radar, communications and electronic warfare, surface acoustic wave devices have been widely used in civilian electronic devices in recent years. The surface acoustic wave filter is the most widely used and widely used sound surface in civil electronic equipment Wave devices such as TV IF filters for TV receivers, stereo radios, 10.7MHz filters for voice recorders, residual sideband filters for TV transmitters, Nepalese filters for TV image demodulators, Television transmission system filters, channel display system comb-tooth filters, television microwave relay system filters and cable TV filters, etc. It is reported that the current annual production of various types of surface acoustic wave filter has reached the number of Tens of millions of pieces.In order to make readers understand more about its development trend, the publication arranges a technical lecture on the foreign development of SAW filter and the characteristics, principle and application of this kind of filter Continuous published articles.