An S-band low-noise amplifier with self-adjusting bias for improved power consumption and dynamic range in a mobile environment

摘要: A discrete low-noise amplifier designed to operate in a mobile wireless environment is presented. The utilizes two cascaded GaAs FETs achieve 25 dB gain and 0.9 noise figure at 2.5 GHz. An active bias control circuit automatically continuously adjusts drain-source currents of the maintain power consumption 33 milliwatts nominal small-signal conditions, provide elevated input IP3 reduced during jamming. 15 improvement achieved large-signal operation.