A sub-1-dB noise figure monolithic GNSS LNA

作者：Renjie Zhou, Xiang Yong, Hong Wang, Yebing Gan, Min Qian, Chengyan Ma, Tianchun Ye · 发表于：Journal of Semiconductors · 年份：2013 · DOI：10.1088/1674-4926/34/9/095010 · 被引用次数：2 · 研究领域：Radio Frequency Integrated Circuit Design、Microwave Engineering and Waveguides、Advanced Power Amplifier Design

A monolithic integrated low noise amplifier (LNA) based on a SiGe HBT process for a global navigation satellite system (GNSS) is presented. An optimizing strategy of taking parasitic capacities at the input node into consideration is adopted and a method and design equations of monolithically designing the LC load and the output impedance matching circuit are introduced. The LNA simultaneously reaches excellent noise and input/output impedance matching. The measurement results show that the LNA gives an ultra-low noise figure of 0.97 dB, a power gain of 18.6 dB and a three-order input intermodulation point of −6 dBm at the frequency of 1.575 GHz. The chip consumes 5.4 mW from a 1.8 V source and occupies 600 × 650 μm 2 die area.