A low voltage low power 3.5/5.8 GHz dual-band common gate Low Noise Amplifier

This paper presents the design and simulation results of a tunable multi-band Low Noise Amplifier (LNA) for mobile WiMAX (IEEE 802.16e) using 0.18μm CMOS process. The target frequency bands are considered to be (3.4~3.6) GHz and (5.2~5.9) GHz. A technique known as Active Post Distortion (APD) was used to improve the linearity and offers optimum noise figure for the system. It provides a third order intercept point of about -1.3 dBm and -5.2 dBm for lower and upper bands respectively. It provides a power gain of more than 12.9 dB, input reverse isolation and noise figure of below -10.3 dB and 3.3 dB respectively. Considering a power supply of 1 v it dissipates 9.12 mw.