基于石英基片的二毫米波段二次谐波混频器设计和研制

Design and fabrication of a 2mm-band sub-harmonic mixer based on quartz

介绍了一种基于石英基片的2mm波段二次谐波混频器.阐述了谐波混频器的基本原理,建立了混频二极管对结构的高频模型,并用全波分析软件对整个电路进行了仿真优化.实测得到射频信号在116～120GHz范围内,当本振频率为59GHz、功率为7～14dBm时,最低变频损耗为17dB,最高变频损耗为20dB.混频器的P1dB为1dBm,各端口隔离度均优于20dB.研制的集成2mm波段二次谐波混频器实测结果与设计结果吻合较好.

An integrated 2mm band sub-harmonic mixer based on quartz circuits was presented.General harmonic mixer theory was introduced.The equivalent circuit model for the anti-pair diodes was built.Then the extensive simulation and optimization by the full wave analysis software were done.When the 59GHz LO signal＇s power was set between 7～14dBm,the mixer yielded a least conversion loss of 17dB and a maximum loss less than 20dB under working frequency of 116～120GHz.The P1dB of the mixer is about 1dBm.The isolation between the three ports is better than 20dB.The measured results of the sub-harmonic mixer are agreed well with the simulated ones.