电容加载LTCC带通滤波器小型化研究  

A research of mini bandpass filter with stripline configuration based on LTCC

作　　者：刘毅[1] 戴永胜[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《微型机与应用》2016年第10期22-23,27,共3页Microcomputer & Its Applications

基　　金：国家重点基础研究发展"973"计划项目资助(2009CB320201);国家国防重点实验室基金项目资助(9140C1402021102)

摘　　要：科技的发展带来更加严格的器件指标,电子器件的小型化、高性能趋势日益明显。滤波器作为射频元器件的重要组成部分,小型化研究已迫在眉睫。基于先进的LTCC工艺技术,选用带状线结构,实现了一款带通滤波器的小型化设计。通过交叉耦合的方式插入零点,提高边带的陡峭度,实现了优异的性能。经过大量仿真优化后投入生产加工,实物测试结果吻合仿真曲线,中心频率为3 400 MHz,带宽为200 MHz,在3 200 MHz频率上的衰减优于30 d B,在3 720 MHz频率上的衰减优于20 d B,尺寸仅为4.8 mm×4.2 mm×1.5 mm。Nowadays,high-level equipment is necessary with the rapid growth of technology. The trend of developing toward miniaturization and high performance has become increasingly apparent. As an important component in microwave module,filter miniaturization is in desperate need. This paper chooses stripline configuration to make into the bandpass filter. Its size is small due to the LTCC technology which is advance in the world. Transmission zeros achieve good stop-band attenuation through cross coupling. This bandpass filter turns to be manufacture after a lot of simulations and optimizing. The measured results satisfy its performance requirement very well. The centre frequency of the BPF is at3 400 MHz,its bandwidth is 200 MHz,at 3 200 MHz the stop-band attenuation need to be more than 30 d B and at 3 720 MHz is more than20 d B. Its size of the fabricated filter is only 4. 8 mm × 4. 2 mm × 1. 5 mm.

关 键 词：带通滤波器 LTCC 带状线结构 小型化 

分 类 号：TN713[电子电信—电路与系统]