Abstract: An arrangement for coupling external antennas (14, 15) to a communication unit (20) comprises, for example, a first filter (25) located in the unit, which filter combines at least signals of a first frequency range and signals of at least a second frequency range to be transmitted and feeds them via a common coupling (29, 26) to external antennas (14, 15), filters the received first signals to a first radio part (11) of the unit (20), and filters the received second signals to a second radio part (12) of the unit (20), and a second filter (16) in the antennas, for example, which filter combines at least the first signals and at least the second signals received and feeds them via the common coupling means (29, 26) to the unit (20), filters the first signals to the transmitted to first external antenna (14), and filters the second signals to be transmitted to a second external antenna (15).

Abstract: A control for noise attenuation is provided which is based on signals received at a time that is different than the assigned receiving time slot of the receiver. Thus, the control is not affected by payload information.

Abstract: A portable device comprising a housing (105, 110); a circuit board (125) located within the housing; and a tubular shield member (130) mounted at a first end (132) on the circuit board (125) so as to surround electronic components (14) on the circuit board to be shielded, wherein the device is arranged such that a metal portion of an exterior wall (120) of the housing electromagnetically seals off the shield member at its other second end (134).

Abstract: A method and system for the arrangement of a power supply with an expansion card which can be connected to an electronic device and comprises at least a first and a second circuit. The power supply is arranged in at least two stages, wherein at the first stage, at least one operating voltage (Vcc) is connected to the first circuit, and at the second stage, the at least one operating voltage (Vcc) is connected to the second circuit.

Abstract: The present invention relates to a communication unit (50, 58) comprising a radio module (50, 58) and an antenna (30, 40) to be coupled thereto. The communication unit (50,58) and the antenna (30, 40) are connected together by a first pair of contacts (33, 43, 51, 55) across which an antenna signal can be transmitted. In addition, the communication unit (50,58) is equipped with a second pair of contacts (35, 52) across which ground potential can be provided by the communication unit (50, 58) to the antenna (30, 40) or to an antenna cable shield. The second pair of contacts (35, 52) are at a distance from the first pair of contacts (33, 43, 51, 55). The contacts may comprise pins, plugs, sockets or any other suitable contacts. The communication unit enables a durable and reliable antenna solution to be implemented, e.g., within a PCM/CIA data card (50, 58).