A 0.5-V novel complementary current-reused CMOS LNA for 2.4 GHz medical application

作者：Dai, Ruofan^*; Zheng, Yunlong; He, Jun; Liu, Guojun; Kong, Weiran; Zou, Shichang

来源：MICROELECTRONICS JOURNAL, 2016, 55: 64-69.

DOI：10.1016/j.mejo.2016.06.011

• Low voltage
• LNA
• Modified complementary current-reused
• Diode connected MOSFET bias
• Forward body-bias
• Harmonic rejection

A 0.5-V low noise amplifier (LNA) for 2.4 GHz medical application based on 0.18 mu m CMOS process is presented in this paper. To achieve low noise and high gain with the constraint of low voltage and low power consumption, a novel modified complementary current-reused LNA using forward body bias technology is proposed. A diode connected MOSFET forward bias technique is employed to minimize the body leakage and improve the noise performance. A notch filter isolator with harmonic rejection is constructed to improve the linearity of low voltage. The measured results show that the proposed LNA achieves a power gain of 18.7 dB and a noise figure of 1.52 dB, while the consuming DC current is only 4.2 mA at supply voltage of 0.5 V.

• 出版日期2016-9
• 单位中国科学院; 信息功能材料国家重点实验室; 中国科学院大学; 中国科学院上海微系统与信息技术研究所