Filtering device with metal cavity provided with dielectric inserts

A filter device including a metal cavity (1, 11) closed by two end walls (3a, 3b;

• 13, 13b) extending transversely relative to the axis of said cavity (1, 11) and at least two dielectric inserts (4a, 4b;
• 14a to 14d) defining a resonator (5, 15a, 15b) in said cavity, said device further including at least one coupling iris (7a, 7b;
• 17) which also extends transversely relative to said axis, said device being characterized in that said at least one coupling iris is on at least one of said end walls (3a, 3b;
• 13, 13b) of said cavity (1) and couples said cavity (1) to at least one metal waveguide (6a, 6b) on said at least one end wall (3a, 3b).