SAW传感器及其在无源标识器中的应用  

SAW Sensor and Its Application to Passive Tag

作　　者：刘积学[1] 段成丽[2] 钟先信[1] 彭江陵[1] 张元勇[1] 

机构地区：[1]四川压电与声光技术研究所 [2]中国国防科技信息中心,北京100036

出　　处：《压电与声光》2005年第6期591-594,共4页Piezoelectrics & Acoustooptics

基　　金：国家"八六三"计划资助项目(2002AA325040)

摘　　要：声表面波(SAW)器件作为信号处理器在现代扩频技术中已获得广泛的应用,推动了信号保密、抗干扰技术在通信、雷达、电子对抗等军用电子系统中的应用。然而,随着信息技术的深入发展,作为模拟技术的SAW技术,在信号处理领域依然展示着其实时强大的信号处理能力,同时在信息敏感方面也展现出卓越的优势,如其灵敏度高、直接频率和相位输出、多参量综合信号转换能力、性能稳定、无源低功耗、工艺简单且与半导体工艺兼容易于实现片上集成等特点,在多种物理、化学、生物传感器系统获得应用,广受重视。近年来,随着SAW器件工作频率提高到GHz以上,使得集信息敏感与信号处理、信号传输于一体的单芯片SAW无源标识器(SAW IDT)技术在多种SAW传感器系统获得广泛的应用,成为当今SAW和传感器两个技术领域的一个新发展亮点。本文基于信息敏感的角度对SAW传感器的理论、设计、结构、系统研究方向,在无源标识器(IDT)应用军方面进行了探讨。SAW device has found wide applications in modern spread spectrum system as the signal-processing device, which helps the use of technologies of secret signal process and anti-interference in communication, radar and electronic countermeasure. With the improvement of information technology, this analog method still shows its powerful capability in real-time signal processing, and special advantage in information sensing, which can be found in many area of physics, chemistry and biology. Recently a single chip SAW passive tag （combined function of signal processing, signal transmission and information sensing）, with the SAW device frequency of GHz, has been used in many SAW sensor system. The theory, design, structure and the application of SAW sensor in passive tag are discussed in the paper.

关 键 词：SAW传感器 无源标识器(IDT) 信息敏感 

分 类 号：TN65[电子电信—电路与系统]