A 0.5-6.5-GHz 3.9-dB NF 7.2-mW active down-conversion mixer in 65-nm CMOS

作者：Guo, Benqing^*; Wang, Xuebing; Chen, Hongpeng; Chen, Jun

来源：Modern Physics Letters B, 2018, 32(23): 1850278.

DOI：10.1142/S0217984918502780

• CMOS mixer
• noise figure (NF)
• noise-canceling
• complementary configuration

In the paper, a broadband CMOS active down-conversion mixer is presented. Specifically, a noise-canceling transconductor is developed to reduce the noise figure of the mixer. The current-reuse technique applied to the developed transconductor by stacked nMOS/pMOS architecture not only saves power consumption of the circuit, but also reduces the undesirable parasitics. Moreover, two passive pi-type networks are exploited to absorb internal parasitics of the circuit and guarantee broadband operation. Implemented in an advanced 65-nm CMOS process, post-simulations show that, driven by 0 dBm sinusoidal LO signal, the proposed mixer provides a maximal conversion gain of 15 dB and a NF of 3.9-4.9 dB across RF input frequency range of 0.5-6.5 GHz. The IIP3 and IP1dB of 3.1 and -6.9 dBm are obtained, respectively. The mixer core consumes 7.2 mW from a 1 V supply.

• 出版日期2018-8-20
• 单位电子科技大学