一种幅相一致性高可靠LC滤波器设计  

Design of an LC Filter with High Reliability and High Amplitude-Phase Consistency

作　　者：魏强[1] 周雨 陈倩[1] 张静雯[1] WEI Qiang;ZHOU Yu;CHENG Qian;ZHANG Jingwen(The 26th Research Institute of China Electronics Technology Group Corporation, Chongqing 400060, China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2021年第1期16-20,共5页Piezoelectrics & Acoustooptics

摘　　要：针对批量生产的相控阵雷达发射-接收(T/R)组件对滤波器的幅相一致性要求较高的问题,该文分析了影响LC滤波器幅相一致性的因素,并从产品的电路原理和结构方面对与产品可靠性有关的元器件、工艺流程等因素进行了分析,设计了一款3 GHz带外抑制大于60 dB、多只间相位一致性≤5°、多只间幅度一致性≤0.2 dB的滤波器。结果表明,该滤波器具有较好的矩形系数、带外抑制和高幅相一致性,产品用于某高可靠星载系统T/R组件中,实现了批量生产对幅相一致性的要求。In view of the fact that the mass-produced transmitter-receiver(T/R)modules for phased array radar require high amplitude-phase consistency of filter,the factors influencing the amplitude-phase consistency of LC filter is analyzed in this paper,and the components and process flow related to the product reliability is investigated from the aspects of circuit principle and structure.A filter with the out-of-band rejection of greater than 60 dB at 3 GHz,phase consistency among filters of less than or equal to 5°,amplitude consistency among filters of less than or equal to 0.2 dB is designed.The results show that the filter has good shape factor,good out-of-band rejection and high amplitude-phase consistency.The filter has been used for the T/R module of a high-reliable satellite-borne system to meet the requirements of amplitude-phase consistency in mass production.

关 键 词：可靠性 容差分析 幅相一致性 

分 类 号：TN384[电子电信—物理电子学] TM23[一般工业技术—材料科学与工程]