1000MHz倾斜阵列压缩器相位补偿技术研究  

Study on the Phase Compensation Technique for the Slant Array Compressor at 1000MHz

作　　者：张龙[1] 周莉[1] 朱瑛[1] 陈小兵[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》2007年第2期129-131,共3页Piezoelectrics & Acoustooptics

摘　　要：采用倾斜阵列压缩器技术制作的声表面波色散延迟线已成功用于许多脉冲压缩系统中。对于这些系统应用来说,延迟线相位响应同理想的二次相位响应的偏离导致了压缩脉冲时域旁瓣电平的恶化。在反射阵列压缩器设计中,采用了一种修正相位误差的方法,该方法是通过调整不同频率反射栅条间金属条带的宽度来实现相位的调节。采用同样的方法,通过在两个倾斜换能器声通道间放置宽度可变的金属条带控制不同频率的延迟变化可实现相位误差的补偿。该文介绍了在倾斜阵列压缩器上进行相位补偿的方法,报道了相位补偿技术在一个L波段倾斜色散压缩器(中心频率1000 MHz,带宽600 MHz)中的成功应用,结果显示均方根相位误差减小到3.9°。SAW dispersive delay lines using the slant array compressor technique have been applied to the pulse compression systems. However, for these applications, the deviation between the actual phase response of delay line and the ideal second-order phase response resulted deterioration of the side-lobe level in the compressed pulse time domain. A phase compensation technique for the slant array compressor is presented in this paper. This phase compensation technique developed by us has been successfully applied to the slant dispersive compressor at L band （cen ter frequency of 1 000 MHz, bandwidth of 600 MHz）. The experimental result shows that the root mean square （RMS） has been reduced to 3.9°.

关 键 词：声表面波 倾斜阵列压缩器 相位补偿 

分 类 号：TN65[电子电信—电路与系统]