基于石英基片的W频段微带平行耦合滤波器研究  

Research on W-band Microstrip Parallel Coupled Filter Based on Quartz Substrate

作　　者：蔡喆 CAI Zhe(Southwest China Research Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《现代信息科技》2021年第24期59-61,64,共4页Modern Information Technology

摘　　要：文章介绍了一种应用于W频段的新型微带平行耦合滤波器。由于采用低损耗的石英基片,该滤波器成为W频段集成化低损耗带通滤波器。实测结果表明:该滤波器在4.8 GHz的带宽内,损耗优于2 dB,驻波比优于2,对偏离中心频率12.2 GHz的下边带信号的抑制大于50 dBc,对偏离中心频率11.8 GHz的上边带信号的抑制大于30 dBc。相较于传统的腔体滤波器,该滤波器具有体积小、重量轻、易于一体集成等优点,非常适合与W频段的芯片集成,可大幅度减小收发组件的体积重量。This paper introduces a novel microstrip parallel coupled filter applied to W-band.Due to the use of low loss quartz substrate,the filter becomes a W-band integrated low loss bandpass filter.The experimental results show that within the bandwidth of 4.8 GHz,the loss of the filter is better than 2 dB,the standing wave ratio is better than 2,the suppression of the lower sideband signal deviated from the center frequency of 12.2 GHz is greater than 50 dBc,and the suppression of the upper sideband signal deviated from the center frequency of 11.8 GHz is greater than 30 dBc.Compared with the traditional cavity filters,this filter has advantages of small volume,light weight,and easy integration.Therefore,it is very suitable for integration with W-band chip,and can greatly reduce the volume and weight of T/R module.

关 键 词：W频段 平行耦合微带线 薄膜电路 石英基片 

分 类 号：TN713[电子电信—电路与系统]