Design of a 0.97dB, 5.8GHz fully integrated CMOS low noise amplifier

T his paper presents a 5.8 GHz fully integrated CMOS low noise amplifier (LNA) with on chip spiral inductors for wireless applications. Simulation results show that the noise figure (NF) of the proposed LNA at 5.8 GHz central frequency is only 0.972 dB, which is perfectly close to NFmin while maintaining the other performances. The LNA also has a power consumption of 6.4 mW, a gain of 17.04 dB, and an input 1-dB compression point (IP1dB) about -21.22 dBm while at 1.8V supply voltage. The proposed LNA topology is very suitable for IEEE 802.11a, 802.11n wireless applications.

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