Abstract: The present invention provides a multiband antenna (1) comprising: a plane type ground element (11); a plane type “lower” active radiating element (2) including at least one “lower” slot (9); a plane type “upper” active radiating element (3) including at least one “upper” slot (10); a first short circuit element (4) electrically connecting said lower element to said upper element; a second short circuit element (5) also connecting said lower element to said ground element; a primary signal source (7); a “lower” thin sheet (12) of a first dielectric material; and an “upper” thin sheet (13) of a second dielectric material. The antenna also has a third short circuit element (6) electrically connecting said lower element and said ground element, and at least one lower slot and at least one upper slot are radiating slots.

Abstract: The present invention provides a multiband antenna (1) comprising: a plane type ground element (11); a plane type “lower” active radiating element (2) including at least one “lower” slot (9); a plane type “upper” active radiating element (3) including at least one “upper” slot (10); a first short circuit element (4) electrically connecting said lower element to said upper element; a second short circuit element (5) also connecting said lower element to said ground element; a primary signal source (7); a “lower” thin sheet (12) of a first dielectric material; and an “upper” thin sheet (13) of a second dielectric material. The antenna also has a third short circuit element (6) electrically connecting said lower element and said ground element, and at least one lower slot and at least one upper slot are radiating slots.