Performance of different simple linearizing techniques in SiGe LNA at 1900 MHz

Five different linearizing methods were implemented to improve the linearity of a low noise amplifier (LNA). Obtaining a very good performance concerning output and input third-order intercept point without significant degradation of the noise figure. Moreover, high 1 dB-gain compression point was succeeded, obtaining a very high linear amplifier operating at 1900 MHz and biased with 2.4 V and 10 mA of collector current.