Design and Performance Measure of 5.4 GHZ CMOS Low Noise Amplifier Using Current Reuse Technique in 0.18μm Technology

A two stage CS-CS low noise amplifier (LNA) centered at 5.4 GHz with a minimum noise figure (NF) 0.423 over a band width of 100 MHz is proposed. The current reuse technique is used to construct the main amplifier and LNA is tuned to that particular frequency using the resonant circuit. The designed LNA obtains a gain of 12.554 dB, input reflection coefficient of -23.847 dB, output reflection coefficient of –17.479 dB, reverse isolation of –20.458 dB and stability factor of 1.425.