Patent Number: 8,878,631

Title: Active low pass filter

Abstract: The invention relates to a selective active low-pass filter and to a method for improving the selectivity of such a filter. The method includes centering, in the center of a network, the resonant element whose frequency is closest to the cutoff frequency of the filter and in inserting in series with this element a negative resistance of higher value than the parasitic resistance of the filter.

Inventors: Tong; Dominique Lo Hine (Rennes, FR), Baron; Francois (Thorigne Fouillard, FR), Lababidi; Raafat (Rennes, FR), Louzir; Ali (Rennes, FR)

Assignee: Thomas Licensing

International Classification: H03H 7/03 (20060101); H03H 11/04 (20060101)

Expiration Date: 2019-11-04 0:00:00