摘要
利用0 35μm CMOS工艺实现了一种用于低中频接收机的Gilbert型下变频器.其中,混频器的输出级采用折叠级联输出,射频信号、本振信号和中频信号的频率分别为2 452GHz,2 45GHz和2MHz.测试表明:在3 3V电源电压条件下,整个混频器电路消耗的电流约为4mA,转换增益超过6dB,输入1dB压缩点约为-11dBm.
A Gilbert type down-conversion mixer with folded -cascode output stage for lowintermediate frequency receiver is implemented in 0.35μm CMOS technology.The frequency of the radiofrequency signal,local oscillator,and intermediate frequency are 2.452GHz,2.45GHz,and 2MHz,respectively.Measurement results show that the conversion gain is higher than 6dB and the input 1dB compression point is about -11dBm.The circuit consumes 4mA under the supply voltage of 3.3V.
