Abstract: The invention relates to a terminal employing wireless data transfer, comprising an enclosure structure consisting of at least one enclosure part (30), (40), (50), (60), an antenna (80) and a feed conductor (92) for receiving a signal from the antenna and/or feeding a signal into the antenna. By applying the invention, a device construction is achieved that makes it possible to improve the EMC properties of the device in a simple way and to improve the electric performance of the antenna of the device, especially to increase the frequency band of the antenna.