提高陶瓷滤波器相频特性一致性的途径

The Way to Improve Identity of Phase Shift frequency Curves in Ceramic Filters

分析了影响陶瓷滤波器相频特性的因素，探讨了提高陶瓷滤波器相频特性一致性的主要途径。结果表明，选择相对带宽较大的瓷料，合适的电极结构，同样的组装方式，达到阻抗匹配，可以减小单个产品的相移。

The factors influencing on phase shift frequency curves in ceramic filters are analyzed and the main way to improve identity of their phase shift frequecy curves is indicated. The results show that phase shift of individual products can be decreased and identity of phase shift frequency curves in mass produced products may be improved by selection of ceramics with wide relative bandwidth, appropriate electrodes structure and identical assembly procedure to obtain impedance matching.