基于低温共烧陶瓷工艺的370 GHz三阶带通滤波器设计

基于低温共烧陶瓷工艺的370 GHz三阶带通滤波器设计

内容简介：基于低温共烧陶瓷工艺（LTCC），设计了工作在370 GHz的三阶带通滤波器.采用有限元分析软件HFSS提取了LTCC工艺下矩形波导的复传播常数，并精确计算了LTCC工艺下矩形谐振腔的品质因数和耦合系数，用于辅助带通滤波器的设计.随后设计了能够用于进一步探针测量的微带线到矩形波导转换器.最终得到的三阶带通滤波器中心频率370 GHz，相对带宽4.7%，插入损耗0.7 dB，回波损耗22 dB，带外抑制大于28 dB.

Abstract：A third order band pass filter working at 370 GHz was designed based on LTCC technology. The accurate complex propagation constants of rectangular waveguide based on LTCC technology were extracted. The Q-factor and coupling coeffi-cients of resonator were also precisely calculated to assist filter design. For the experimental verifications, a practical mi-crostrip-to-waveguide transition for probing system was designed. The designed band pass filter has a central frequency of 370 GHz, relative bandwidth 4.7%, insertion loss 0.7 dB, return loss 22 dB, and out-of-band rejection larger than 28 dB.

作者：刘文涛, 吴宪顺, 庄晴光,

关键词：滤波器, 低温共烧陶瓷, 太赫兹, 耦合矩阵, 品质因数