混频技术在宽带模拟信号隔离传输中的应用

Mixing technology in the transmission of broadband analog signal isolation applications

传统的隔离器件已经无法满足模拟信号隔离传输在带宽、线性度及隔离度等方面的需求,为了更好地解决宽带模拟信号的隔离传输问题,采用模拟混频技术结合线性磁耦合元件的方式,设计了模拟信号隔离传输装置.通过软件仿真设计出实验模型,在理论分析和模型仿真的基础上通过多次电路实验,使设计出的隔离器满足了信号带宽和隔离度的要求.

Traditional isolator can＇t meet the requirements of analog signals isolation transmission broadband,linearity and isolation.In order to better solve the isolation transmission problem of broadband analog signals,the method of combining analog mixing technology and linear magnetic coupling elements is adopted to design analog signals isolation transmission devices.Experimental model is designed through software emulation.On the basis of theoretical analysis and model emulation,many circuit experiments are done to make the designed isolator meet the requirements of signal broadband and isolation.