Low level and high linearity amplifiers in integrated technology for satellite receivers : linearisation techniques and issues.

Joseph Tapfuh Mouafo (1) , Bernard Jarry (1) , Michel Campovecchio (1) , J.F. Villemazet , J.L. Cazaux

1 C2S2

Based on carrier to third intermodulation ratio (C/I3), reverse engineering of a two stages low level amplifier has been made in order to access the current transistor nonlinear models. Comparisons between two models of HEMT have been performed in order to choose the one which represent accurately weak nonlinearities at low level power dynamic range. By judicious choice of bias point, 12 dB improvement of linearity has been achieved. Other issues of linearization techniques have been studied so that to be suitable for MMIC implementation.

Joseph Tapfuh Mouafo, Bernard Jarry, Michel Campovecchio, J.F. Villemazet, J.L. Cazaux. Low level and high linearity amplifiers in integrated technology for satellite receivers : linearisation techniques and issues.. IEEE, 3rd Conference on PhD Research in Microelectronics and Electronics, Prime 2007., Jul 2007, BORDEAUX, France. pp.153.156, ⟨10.1109/RME.2007.4401834⟩. ⟨hal-00194865⟩