基于CMOS模拟开关实现平衡混频器

详细介绍了有源单平衡混频器的电路组成,分析了有源平衡混频器的工作原理。基于CMOS模拟开关设计实现了一种(低功耗、高线性度的)开关平衡混频器,最后对混频器的指标进行了测量和分析。测试结果表明(在3.3V电源电压下,消耗电流小于10mA,射频输入信号)在60～110MHz频带范围内,(本振信号+10dBm时)插入损耗小于7dB,波动小于1dB,输入P1dB压缩点大于13dBm。

Design of Balanced Mixer Based on CMOS Analog Switch

This paper introduces the composition of active single balanced mixer circuit in detail, and analyzes its working principle. Based on CMOS analog switch design, we design and realize a kind of switch balanced mixer which possesses the characteristic of low power consumption and high degree of linear. The mixer indexes are measured and analyzed at the end. The test results show that if the vibration signal adds 10dBm, the insertion loss is less than 7dB, the fluctuation is less thanldB, and the input PldB compression point is above 13dBm when the power supply voltage is in 3.3V and current consumption is less than 10rnA and RF input simaal belongs to the band range of 60～110 MHz.