Filter that is variable by means of a capacitor that is switched using mems components

A tunable filter comprising at least two resonator circuits placed between a first matching network connected to a first input/output and a second matching network connected to a second input/output, wherein said matching networks consist of an inductor and a capacitor connected in parallel, and in that:

• one resonator is connected at a first of its ends on one side to the ground plane M of the filter by metallized holes and at a second end to a MEMS network;
• the distance d between the 2 resonators forms an inter-resonator inductive coupling circuit;
• an inter-resonator coupling capacitor is formed by 2 etched lines that are connected to the first and second resonators, respectively;
• the MEMS networks are distributed around the ends of the resonators;
• the MEMS networks are connected between the first and second resonator and the ground plane M by virtue of vias or metallized holes;
• and
• the filter comprises a number of independent electrical control voltages Vi adapted to actuate the MEMS.