科研之友
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摘要
This work presents a low-noise amplifier (LNA) design with a wide-range gain control characteristic that integrates adjustable current distribution and output impedance techniques. For a given gain characteristic, the proposed LNA provides better wideband interference rejection performance than conventional LNA. Moreover, the proposed LNA also has a wider gain control range than conventional LNA. Therefore, it is suitable for satellite communications systems. The simulation results demonstrate that the voltage gain control range is between 14.5 and 34.2dB for such applications (2600MHz); the input reflection coefficient is less than -18.9dB; the noise figure (NF) is 1.25dB; and the third-order intercept point (IIP3) is 4.52 dBm. The proposed LNA consumes 23.85-28.17mW at a supply voltage of 1.8V. It is implemented by using TSMC 0.18-um RF CMOS process technology.
- 出版日期2016-10
