A Low-Power Full-Band Low-Noise Amplifier for Ultra-Wideband Receivers

作者：Weng Ro Min^*; Liu Chun Yu; Lin Po Cheng

来源：IEEE Transactions on Microwave Theory and Techniques, 2010, 58(8): 2077-2083.

DOI：10.1109/TMTT.2010.2052404

• Common gate
• low-noise amplifier (LNA)
• ultra-wideband (UWB)

In this paper, a low-power full-band low-noise amplifier (FB-LNA) for ultra-wideband applications is presented. The proposed FB-LNA uses a stagger-tuning technique to extend the full bandwidth from 3.1 to 10.6 GHz. Acurrent-reused architecture is employed to decrease the power consumption. By using an input common-gate stage, the input resistance of 50 Omega can be obtained without an extra input-matching network. The output matching is achieved by cascading an output common-drain stage. FB-LNA was implemented with a TSMC0.18-mu m CMOS process. On-wafer measurement shows an average power gain of 9.7 dB within the full operation band. The input reflection coefficient and the output reflection coefficient are both less than -10 dB over the entire band. The noise figure of the full band remained under 7 dB with a minimum value of 5.27 dB. The linearity of input third-order intercept point is -2.23 dBm. The power consumptions at 1.5-V supply voltage without an output buffer is 4.5 mW. The chip area occupies 1.17 x 0.88 mm(2).

• 出版日期2010-8
• 单位东华大学