This paper presents a novel design of a double-balanced folded mixer for ISM applications. By utilizing the capacitor cross-coupled (CCC) topology and a modified post distortion (PD) technique in the transconductance stage, a high linearity mixer is realized with lower power dissipation. The mixer is designed and fabricated in a 0.13-µm CMOS process, operating in the frequency band of 900 MHz. Measurement results indicate a conversion gain of 17 dB, a high third-order input intercept point (IIP3) of 11.3 dBm and a noise figure (NF) of 10 dB. Also, the folded structure allows the mixer to operate under 1.0-V supply voltage with a power dissipation of only 2.4 mW.

本文介绍了一种适用于ISM应用的双平衡折叠式混频器的新颖设计。通过在跨导级中利用电容器交叉耦合（CCC）拓扑和改进的后失真（PD）技术，可以实现具有较低功耗的高线性度混频器。该混频器采用0.13 µm CMOS工艺进行设计和制造，工作在900 MHz频段。测量结果表明转换增益为17 dB，高三阶输入截取点（IIP3）为11.3 dBm，噪声系数（NF）为10 dB。同样，折叠结构使混频器可以在1.0V电源电压下工作，功耗仅为2.4mW。