摘要
压电晶体在旋转切割时存在的误差会导致压电参数的变化,进而引起压电基片的声表面波(SAW)速度发生改变,最终导致声表面波滤波器(SAWF)中心频率发生移动.
By using the rotated cutting, cutting errors in the piezoelectric crystals may be produced. lhe values of the elements of piezoelectric coefficient matrixes change because of cutting errors. These changing values results in the change of SAW velocity of piezoelectric substrates. Finally the centre frequency of SAWF is moved.
出处
《宁夏大学学报（自然科学版）》
CAS
北大核心
2008年第2期144-146,共3页
Journal of Ningxia University(Natural Science Edition)
基金
宁夏大学自然科学基金资助项目(032107)
关键词
压电基片
切型
压电参数
声表面波滤波器
piezoelectric substrates
cutting orientation
piezoelectric coefficients
surface acoustic wave filter
