Patent ID: 6903688

Claim:
An antenna device for use in at least two frequency bands, wherein the mean wave length of the higher of said frequency bands is λ, characterized in that: said antenna device comprises an antenna element in the form of a reed ( 10 ; 310 ; 410 ; 510 ; 610 ; 710 ), wherein said reed is mounted on a conductive support structure ( 20 ) having a projected area of less than λ 2 , said reed comprises a feeding portion ( 12 ) connectable to a feed device ( 32 ); at least one impedance ( 14 , 16 , 18 ; 214 , 216 ; 714 , 716 ) is connected between said reed and said conductive support, and a phase difference of at least one of the transmitted signal waves and received signal waves within said at least two frequency bands over said reed is less than 120° in order to increase radiation conductance.