Different linearizing techniques to improve electromagnetic compatibility in SiGe LNA

In this work three different structures are proposed to improve the linearity of SiGe amplifiers. The first structure, AFCE has the possibility of obtaining high linearity and wide bandwidth with low-level noise figure, without degrading the power gain. The second configuration called CERCC in a very high linearization is obtained but in a narrower band than the Active feedback configuration. The third structure is an alternative of the previous, but using only one resonant circuit in the collector and an inductor in the emitter.