Ametric Synthesis Filter with Three Pass-Bands and Three Attenuated Bands.

The paper sets out a computational method for an ametric synthesis filter with three passbands and three attenuated bands, where the maximum attenuation tolerated is the same in all passbands. When the parameter is established, there are two conditions which link the frequencies of the attenuation poles to the limit frequencies of the passbands. This nonsymmetric filter has the configuration of a single passband symmetrical low-pass filter.