| 摘要 |
The invention relates to a nonlinear filtering device (10) including a first processing branch comprising, in series, a subtractor module (11) receiving an input signal (E), a fixed gain module (12), an adder module (13), an integrator module (14) generating an output signal (S), at least one second unit gain return branch between the output of the integrator module (14) and an input of the subtractor module (11) and a variable gain module (15) disposed on a branch parallel to the branch of the fixed gain module (12). The variable gain of the filtering device (10) is interpolated such as to ensure the continuous nonlinearity of the filtering device (10). The variable gain is linked directly to the desired bandwiths of the signal to be filtered by the cutoff angular frequency ?c defined by equation (I), in which Te is the sampling period, F is the fixed gain and NL is the variable gain of the filtering device (10). |
