Patent ID: 6930642

Claim:
A multiband antenna ( 1 , 20 ) comprising: a plane type ground element ( 11 , 31 ); a plane type “lower” active radiating element ( 2 , 22 ) superposed on and parallel with said ground element, and including at least one “lower” slot ( 9 , 29 ); a plane type “upper” active radiating element ( 3 , 23 ) superposed on and parallel with said lower element, and including at least one “upper” slot ( 10 , 30 ); said lower element being electrically connected to said upper element by a first short circuit element ( 4 , 24 ), and said lower element also being connected to said ground element by a second short circuit element ( 5 ); a primary signal source ( 7 , 27 ) connected at one end to a generator and fixed at its other end to one of said radiating elements; a “lower” thin sheet ( 12 , 32 ) of a first dielectric material filling a space between said lower element and said ground element; and an “upper” thin sheet ( 13 , 33 ) of a second dielectric material filling a space between said lower and upper elements; the antenna being characterized in that it further comprises a third short circuit element ( 6 ) electrically connecting said lower element and said ground element, and in that at least one lower slot and at least one upper slot are radiating slots, and said other end of said source ( 7 , 27 ) is fixed to said upper element ( 3 , 23 ).