一种W波段波导衰减器的设计与验证  

The designing of a terahertz-band waveguide attenuator

作　　者：周传升 牛之友 许延峰 ZHOU Chuansheng;NIU Zhiyou;XU Yanfeng(China Electronics Technology Ceyear Technologies Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]中电科思仪科技股份有限公司,青岛266000

出　　处：《空间电子技术》2021年第4期73-78,共6页Space Electronic Technology

基　　金：国家自然科学基金(编号:61075030)。

摘　　要：针对太赫兹频段卫星通信系统对信号传输及控制的需求,设计了一种工作于75 GHz~110 GHz毫米波频段的大功率高精度波导可调衰减器。文章采用了吸收式衰减的方案,设计了一种插入式衰减的波导衰减器的衰减结构。首先确定波导可调衰减器结构要求;其次运用HFSS软件对衰减器射频指标进行设计仿真,并对衰减片方阻、厚度、外形结构等进行参数分析;最后通过制造出波导可调衰减器实物并进行测试,验证了设计方法及设计结果准确。结果表明:波导可调衰减器的驻波比与衰减片外形有关,衰减平坦度与衰减片方阻值相关。在75 GHz~110 GHz频段,衰减器的电压驻波比小于1.2,插入损耗小于1.0 dB,衰减量调节范围为0 dB~30 dB,耐功率为500 mW,实现了低驻波比、小插损、大衰减范围、高精度的技术要求。In response to the signal transmission and control requirements of the terahertz band satellite communication system,a high-power,high-precision waveguide setting attenuator working in the 75 GHz~110 GHz millimeter wave frequency band was designed.In this paper,an absorption scheme is adopted,and an attenuation structure of a waveguide attenuator with insertion attenuation is designed.First,the structural requirements of the waveguide setting attenuator are determined.Then,the simulation of the attenuator RF standard is carried out by using HFSS software,and the parameters such as square resistance,thickness and shape structure of attenuator chip are analyzed.Finally,the design method and the design result are proved to be accurate by manufacturing and testing the waveguide setting attenuator.The results show that the VSWR(voltage standing wave ratio)of the waveguide setting attenuator depends on the shape of attenuator,and the flatness of attenuation depends on its square resistance.Finally in the 75 GHz~110 GHz band,the VSWR is less than 1.2,and the insertion loss is less than 1.0 dB,the range of attenuation is 0 dB~30 dB,the power resistance is 500 mW.The technical requirements of low VSWR,small insertion loss,large attenuation range,high-precision and high-power are realized.

关 键 词：太赫兹 波导可调衰减器 大功率 

分 类 号：V474[航空宇航科学与技术—飞行器设计]