Patent ID: 6437745
Filing Date: 2002-08-20
Classification: H01Q

Abstract:
An expansion card for wireless data transmission, which card (C) comprises:a card part (1) which is arranged to be placed at least partly inside an expansion card interface of an electronic device, a housing part (2) which is attached at the end of said card part (1) and is arranged to extend at least partly outside said interface, and which comprises a cover structure (21) and a bottom structure (22), and an antenna structure for receiving and transmitting signals, which structure comprises at least one electroconductive, radiating antenna plane (31) and a ground plane (32) arranged parallel to the same, at a distance, as well as a dielectric (33) between said planes, characterized in thatfor improving the antenna properties, said antenna structure is placed in the housing part (2), wherein said antenna plane (31) is arranged on the side of the cover structure (21), the ground plane (32) is arranged on the side of the bottom structure (22), and as said dielectric is arranged a free clearance.