倾斜反射阵列相关器技术研究  

Study on the Slanted Reflective Array Correlator

作　　者：张龙[1] 周莉[1] 陈小兵[1] 于新晓[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2005年第1期1-3,13,共4页Piezoelectrics & Acoustooptics

摘　　要：介绍了倾斜反射阵列相关器(SRAC)设计技术,并采用该技术在YZ-LiNbO3基片上制作了中心频率60MHz,带宽35MHz,色散时间40μs的声表面波沟槽反射栅色散延迟线,实现了60%的相对带宽,同时采用了幅度及相位补偿技术,改善了器件的幅频及相频特性,实现了主副瓣比35dB。The design technology of slanted reflective array correlator is introduced in this paper. A SAW disperssive delay line based on this technology is realized on YZ-LiNbO_3 substrate with center frequency of 60 MHz and bandwidth of 35 MHz. The disperssive time and the relative bandwidth of the device are 40us and 60% respectively. Both amplitude and phase compensation technology is used to improve the amplitude-frequency and phase-frequency properties of the device. The main-side lobe ratio is about 35 dB.

关 键 词：声表面波 倾斜反射阵列相关器 相位补偿 主副瓣比 

分 类 号：TN65[电子电信—电路与系统]