Patent ID: 7956816
Filing Date: 2011-06-07
Classification: H01Q

Abstract:
1. A portable compact antenna formed from a first dipole type radiating element operating in a first frequency band and comprising a first and at least one second conductive arm, differentially supplied, said first and second conductive arms each having a first and second extremities and being linked to each other and supplied at a level of one of said first and second extremities, the first arm forming at least one cover for an electronic card wherein the second arm is constituted by a conductive element realized on an insulating substrate and comprises at least one slot forming a filter directly etched in the conductive element of the second arm and dimensioned to resonate in a second frequency band the total length of the slot is noticeably equal to λg/2 where the guided wavelength in the slot with λg=λ0/√reff with εreff being the equivalent permittivity of the material seen by the slot, and λ0 being the wavelength in the air.