The invention discloses a controllable output voltage on high linearity mixer, including current / voltage conversion circuit, mixer circuit, amplitude detector, a comparison module; the current / voltage conversion circuit is used to convert the analog baseband signal into a current signal; the mixer circuit for the voltage / current signal the current switching circuit with LO signal mixing, high output linear mixing signal; the amplitude detector is used for detecting the high linearity mixer signal amplitude and output signal; the comparison module is used to compare the detecting signal and the reference voltage signal and output control signal to control the current and voltage / current switching circuit. The invention adopts a negative feedback control loop to make the output voltage amplitude accurate, and the circuit structure of the invention is simple, and is beneficial to the CMOS integration.
【技术实现步骤摘要】
【技术保护点】
一种输出电压可控的高线性上混频器，其特征在于，包括： 电压／电流转换电路，用以将模拟的基带信号转换为电流信号； 混频电路，用以将所述电压／电流转换电路输出的电流信号同ＬＯ信号进行混频，输出高线性混频信号； 幅度检测器，用以检测所述高线性混频信号的幅度，输出检测信号； 比较模块，用以比较所述检测信号和参考电压信号，输出控制信号控制所述电压／电流转换电路输出的电流。
【技术特征摘要】
【专利技术属性】
技术研发人员：迮德东，刘瑞金，
申请(专利权)人：捷顶微电子上海有限公司，
类型：发明
国别省市：31[中国|上海]
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。