The invention relates to a double frequency-selective CMOS amplifier of LNA type, which amplifies the input signal in two distinct frequency bands. According to the invention, the double selective amplifier consists of an amplifier (1) implemented with two parallel NMOS transistors (4 and 5) for providing two signal paths, and polarized by means of a current mirror (2), at the inlet of which there is connected a passive network with notch-type frequency characteristic at two different frequencies, for filtering the signal.
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