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本文介绍了四次谐波镜像抑制混频器中无源部分的设计,无源部分包括了双巴伦和兰格电桥。通过ADS软件进行相关的仿真,最终实现了巴伦在频段7.9～9.5GHz的幅度不平衡度小于0.2dB,相位不平衡度小于1°,在中心频率8.7GHz的插损约为7.3dB;兰格电桥在频段30～40GHz的幅度不平衡度小于0.3dB,相位不平衡度小于1°在中心频率35GHz的插损约为3.25dB。双巴伦和兰格电桥仿真得到的结果良好,为最终四次谐波镜像抑制混频器的单片实现奠定了基础。
This article describes the design of the passive components in the fourth harmonic mirror suppression mixer. The passive components include double balun and Lange bridges. Through the simulation of ADS software, Barron finally achieves amplitude unbalance of less than 0.2dB, phase imbalance of less than 1 ° in 7.9-9.5GHz band and insertion loss of 7.3dB at 8.7GHz of center frequency. Lattice bridge in the band 30 ~ 40GHz amplitude unbalance less than 0.3dB, phase unbalance less than 1 ° in the center frequency 35GHz insertion loss of about 3.25dB. The results of the dual balun and Lange bridge are good, which lays the foundation for the monolithic realization of the final fourth harmonic image rejection mixer.