摘要
当前,5G系统建设已如火如荼。为提高5G系统的通信距离和通信容量,急需一种滤波性能较好且体积较小的滤波器。对此,介绍滤波器的设计理论,在理论计算和分析的基础上,使用射频/微波仿真软件HFSS设计了一种5G系统腔体滤波器,分析了谐振杆长度与频率的关系、谐振杆间距与耦合系数的关系以及输入输出端口对外部Q值的影响,对滤波器整体进行了仿真分析,优化后的结果显示,在通带(3.4~3.5 GHz)内,插入损耗小于0.3dB,回波损耗大于28dB,指标远优于同类器件,能改善系统的噪声系数,提高系统的通信距离和通信容量,改善通信系统的稳定性,适用于5G通信系统。
The construction of 5G system is in full swing.In order to improve the communication distance and capacity of 5G system,it is urgent to design a filter with better filtering performance and smaller volume.This paper introduces the design theory of the filter.Based on the theoretical calculation and analysis,a 5G system cavity filter is designed by using the RF/microwave simulation software HFSS.The relationship between the length of the resonant rod and the frequency,the relationship between the spacing of the resonant rod and the coupling coefficient,and the influence of the input and output ports on the external Q value are analyzed.The overall filter is simulated and optimized.The results show that,in the pass-band(3.4~3.5GHz),the insertion loss is less than 0.3dB,the return loss is more than 28dB,which is far better than the similar devices.When used in 5G communication system,it can improve the noise figure of the system,the communication distance and capacity,the stability of the communication system.
作者
罗兵
王钊华
邹剑萍
杨惠淇
杨露瑶
黄子玲
LUO Bing;WANG Zhaohua;ZOU Jianping;YANG Huiqi;YANG Luyao;HUANG Ziling(School of Electronics and Communications,Guangdong Mechanical&Electrical College,Guangzhou 510515,China)
出处
《电声技术》
2021年第7期30-35,共6页
Audio Engineering
基金
广东大学生科技创新培育专项资金资助项目(No.pdjh2020b0917)
广东省自然科学基金项目(No.2018A0303130326)。
