8mm波段四次谐波混频器的设计与仿真  

Design and simulation of 8mm band quadratic harmonic mixer

作　　者：王宇星 雷志勇[1] Wang Yuxing;Lei Zhiyong(School of Electronic Information Engineering, Xi＇an Technological University, Xi＇an 710021, China)

机构地区：[1]西安工业大学电子信息工程学院

出　　处：《电子测量技术》2018年第4期55-60,共6页Electronic Measurement Technology

摘　　要：毫米波探测技术解决了红外探测系统易受强光源及热源干扰的问题,并且由于大气窗口的存在,毫米波的探测能力不会因雾、霾、湿度等自然天气条件而受限。作为毫米波探测系统中必不可少的器件,混频器能将高频的毫米波信号与本振信号混频,使之下变频为更易处理的中频信号。但是制造高频率低噪声的本振信号难度较大,为了解决这一问题,介绍了谐波混频器的原理与一般设计方法,它能够有效的降低本振信号的工作频率,并使用ADS射频仿真软件设计了8mm波段四次谐波混频器,该谐波混频器使用反向并联二极管对和微带电路结构,仿真结果表明当射频频率为34.5GHz,本振频率为8.6GHz,中频频率为100 MHz时,变频损耗为11.5dB。Millimeter wave detection technology to solve the infrared detection system vulnerable to strong light source and heat source interference problems,and because of the existence of atmospheric windows,millimeter wave detection capacity does not appear haze,humidity and other weather conditions,has been widely used in weather forecast,astronomy observation,environmental monitoring and military fields.The mixer is an indispensable device in the millimeter-wave detection system that mixes the high-frequency millimeter-wave signal with the local oscillator signal to convert it into a more easily processed intermediate frequency signal.However,the manufacture of high-frequency lownoise local oscillator signals is difficult.In order to solve this problem,this paper introduces the principle and general design method of harmonic mixer,and designs the 8 mm band fourth harmonic mixer.The harmonic mixer uses the reverse parallel diode pair and the microstrip circuit structure,when the RF frequency is 34.5 GHz,the local oscillator frequency is 8.6 GHz,the intermediate frequency is 100 MHz,the frequency loss is 11.5 dB.

关 键 词：谐波混频 反向并联二极管对 ADS 

分 类 号：TN773[电子电信—电路与系统]