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发明名称
一种新型的相敏解调器
摘要
一种新型的相敏解调器,由运算放大器和模拟开关组成。与用二极管(或三极管)和变压器构成的开关解调器或用模拟乘法器构成的乘积解调器相比,本发明所述的解调器具有性能优良,原理简单,成本低廉,体积小巧,制作容易等特点。
申请公布号
CN1124575C
申请公布日期
2003.10.15
申请号
CN00103243.7
申请日期
2000.03.20
申请人
中国科学院大气物理研究所
发明人
孙宝来
分类号
G08C13/02;G08C25/00
主分类号
G08C13/02
代理机构
代理人
主权项
一种相敏解调器,即把交流误差信号解调成直流误差信号的一种电路,其特征在于这种相敏解调器由普通运算放大器和二选一模拟开关组成;运放构成的过零比较器将基准电压信号Ujz变成方波信号Ufb,由其控制二选一模拟开关MK的开通与关断;交流位置误差信号Usr一路直接接到MK的一个输入端,另外一路经运放构成的反相器反相后接到MK的另一个输入端;解调后的信号Usc由MK的输出端引出,再经滤波后即成为直流位置误差信号。
地址
100029北京市德胜门外祁家豁子
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