中文摘要：

将Ba0.6Sr0.4TiO3（BST）铁电薄膜应用于微带电路中,采用高频仿真软件（HFSS）双模法提取耦合系数,快速设计了λ/2（λ为波长）可调滤波器。针对电路中偏压隔离部分设计了用于谐振器间的高阻偏压连线和λ/4接地线,使滤波器能采用端口加压的方式调谐,简化了调谐方式。最终设计了中心频率为7.8GHz、带宽为1GHz的带通可调滤波器。

英文摘要：

Ba0.6 Sr0.4 TiO3 （BST）ferroelectric film was applied in micro-strip circuit. A half-wavelength tunable band-pass filter was designed quickly by HFSS dual-mode method to extract the coupling coefficients. Considering the voltage isolation of DC signal bias in the circuit, a high resistance line connecting line and a grounding wire of 1/4 wavelength was designed between the resonators. The filter tuning was simplified with dc voltage processing at port. The band-pass tunable filter was finally designed with the features of 7.8 GHz center frequency and 1 GHz bandwidth.