SYNCHRONOUS FILTER WITH SWITCHING TYPE CAPACITANCE

摘要

The invention relates to a synchronous filter has capabilities switched. / p & & p & the capabilities are connected in parallel and the filter comprises matching means 1 receiving a signal is filtered, and supplying the signal on an output connected to the paths of the filtering p, p,.., p a capabilities switched, this filter also comprises means i, i,.., i of the switching of the paths of the filtering of the summing means 3 having respectively entrees connected a of the outputs of the paths of the filter m, m,.., m and of the sampling means 4, connected to the switching means i, i,.., i to be applied to the switching control signals. Each path comprises two identical channels v, v, filtering, by volume, connected to the switching means i, i,.., the switching control signals are symmetric for the two channels of each path and shifted of t2n; the periods of sampling of the two channels of a path are being equal at t2. / p & & p & application to the filters - strip, a narrow band.