摘要
设计了一款基于低温共烧陶瓷(LTCC)技术的小型化的可调频带通滤波器,该滤波器电路由Top-C型电容耦合的三阶谐振腔组成,利用增加反馈电容的方式增加了零点,增强了带外抑制。通过器件外接可变电容二极管的方法实现调频,该器件的中心频率可以在1190MHz-1490MHz范围内进行连续调谐,并且带内损耗保持在2d B以下,2f0处带外抑制始终大于25d B,器件尺寸为9.8mm×7mm×0.9 mm。通过仿真实验,总结了调频带通滤波器的性能变化规律。在小型化可调带通滤波器的研究中,给出了很好的设计思路。
Designing a miniaturized band - pass filter enabling center frequency tunability based on low temperature co- firing ceramic （LTCC） technology. The filter circuit contains a third -order resonator by capacitance coupling, adopting capacitance between the resonators to introduce two transmission poles, the performance of filter is improved. Adapting the external variable capacitance diode to make sure that center frequeney tunable. The center frequency can be performed within the 1190MHz- 1490MHz constantly, retaining the insertion loss below 2 dB, in- band rejection better than 25 dB. Summarizing the changing rules of the tunable band - pass filter performance and giving a good design idea in miniaturized study of tunable band- pass filter.
作者
杨晓东
邢孟江
王尔凡
YANG Xiao-dong XING Meng-jiang WANG Er-fan(Faculty of information engineering and automation, Kunming University of Science and Technology, Kunming 650500, Chin)
出处
《无线通信技术》
2017年第2期42-46,51,共6页
Wireless Communication Technology
基金
云南省人才基金项目资助(No.KKSY201403006)
国家自然科学基金项目资助(No.61564005)
