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The AD831 is a low distortion, wide dynamic range, monolithic mixer for use in such applications
2008-08-14 09:28
每次开篇都不会忘记提醒建议大家养成这个好习惯(手动滑稽脸~),随手记一记,备注备注,方便自己后期查看,也方便后来者读图,好了,献出原理图:pcb如下:芯片特点双重平衡混频器 低失真:+24 dBm三阶交调截点(IP3)+10 dBm 1 dB压缩点带宽: 500 MHz RF和LO输入带宽 250 MHz差分电流IF输出直流到200 MHz以上单端电压IF输出低LO驱动要求:–10 dBm单电源或双电源供电使用双电源时为直流耦合 所有端口都可直流耦合 无低频下限—工作频率低至DC用户可编程功耗使用经验建议1.输出这里可以设计两条路,一条板载滤波,一条直接输出。如果大家对滤波要求比较高,这里也可以用晶体滤波器。2.双电源输入这里可以加上二极管防反接3.射频信号输入和本振信号输入两部分的信号线需要阻抗仿真,另外这两部分的耦合电容大小可根据具体的频段来选择。
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IntroductionAs the complexity of sophisticated, modern day equipmentgrows, the need for high
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