论文部分内容阅读
为纪念声表面波器件的奠基人——英国物理学家瑞利发现瑞利波100周年(1885—1985).本刊组织选译了英国皇家信号与雷达公司M.FLewis等人的“声表面波器件的最新进展”一文,分四期发表.声表面波器件近20年来由于采用平面制作工艺,促使其发展异常迅速,加之它的动态范围大和设计灵活等突出的优点,因而成功地研制出了许多具有特色的声表面波器件,广泛地应用于雷达、通讯、电子对抗,以及电视等系统中,已成为电子技术领域中重要的组成部分.近来,有关声表面波器件的文献大量涌现,而本文的作者力图避免在内容上与其他文献报导相重复,着眼于更新的发展和成就.最后,预测了声表面波研究的发展动向.1965年首次提出了利用光刻工艺制作的换能器的声表面波(SAW)延迟线,从那以后,有关SAW传输的物理学和有关用这种平面声波元件作高频电子元件的报导源源不断.到1975年,已经报导了许多具有潜在用途的SAW器件的原理,同时在脉冲压缩雷达中使用了第一个色散延迟线.本文评述了近几年来在这方面的进展,从中可看出很多军用和民用SAW器件的发展情况,并可了解TVIF滤波器的批量生产能力.本文还描述了最近的趋势:更加小型、廉价,插损更低、性能更杂复.这将是下一代SAW器件的标志.
To commemorate the founder of surface acoustic wave devices - the British physicist Rayleigh found Rayleigh waves 100 anniversary (1885-1985). The organization selected the British royal signal and radar company M.FLewis et al “sound surface Recent Advances in Wave Devices, ”published in four issues, SAW devices have been successfully developed in the last two decades due to the use of planar fabrication processes that have led to their extraordinary development, combined with their large dynamic range and design flexibility Many characteristic surface acoustic wave devices, which have been widely used in radar, communication, electronic countermeasure and television systems, have become an important part in the field of electronic technology.Recently, literature on surface acoustic wave devices has emerged in large numbers, However, the author of this paper tries hard to avoid duplication with other reports in the content and focus on the development and achievements of renewal.Finally, the development trend of SAW research is forecasted.For the first time, the transducer fabricated by photolithography was proposed in 1965 (SAW) delay line, since then there has been a steady stream of physics about SAW transmission and about the use of such planar acoustic components as high-frequency electronics. Many principles of potentially useful SAW devices have been reported in 1975 and the first dispersive delay line was used in pulse compression radars This article reviews the progress made in this area in recent years and shows that many military and The development of civil SAW devices and understanding of mass production capabilities of TVIF filters This article also describes the recent trends: smaller, cheaper, lower insertion loss, more complex features that will be the hallmark of the next generation of SAW devices .