Abstract: The invention relates to a method for measuring a radio frequency signal in a wireless station (1). In this method, radio frequency power is measured by means of testing equipment (6, 7, 12), which includes at least a testing apparatus (7), a measuring head (6) and means (12) for transmitting electrical signals between the testing apparatus (7) and measuring head (6). The wireless station (1) includes at least one radio part (8), a wiring board (2), an antenna (5) and switching means (3, 22). This test switch has at least an first position, in which the radio frequency signal is directed between the radio part (8) of the wireless station (1) and the antenna (5), and a second position, in which the radio frequency signal is directed between the radio part (8) of the wireless station (1) and the testing apparatus (7) via the switching means (3, 22) and the measuring head (6).

Abstract: This invention relates to an actively tunable patch antenna comprising a ground plane, a planar radiator, a feed point, a grounding line and first and second antenna branches separated from each other by a groove, the patch antenna further comprising one or more additional grounding points between the planar radiator and the ground plane. The invention further relates to a mobile terminal utilizing the tunable patch antenna of the invention.

Abstract: A radio device and an antenna structure comprising a ground plane, at least a first and a second radiator, both radiators being configured to provide at least one resonance frequency in order to provide at least one frequency band. The antenna structure further comprises separate feed points for both radiators grounded to the ground plane. The first radiator is configured to provide at least two frequency bands, at least one of the frequency bands being at least partly overlapping with at least one frequency band provided by the second radiator. In addition, at least the first radiator is a groove plane antenna such that coupling of the radiators with each other at least within the partly overlapping frequency range is substantially avoided.

Abstract: The invention relates to a system for matching an antenna (ANT) for a wireless communication device, the system comprising: detecting means (4, 5, 12) to detect the matching of the antenna (ANT) and to generate a matching signal on the basis of the detected matching, control means (7) to examine said matching signal, to determine the need for matching, and to generate a control signal on the basis of said matching signal, and antenna matching means (9) to adjust the matching of the antenna (ANT) on the basis of said control signal. The invention relates also to a wireless communication device and a method for matching the antenna of a wireless communication device.

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: The invention relates to a method for attenuating interference in a positioning receiver of an electronic device, in which method a signal transmitted by satellites of a positioning system is received through a second antenna. The electronic device further comprises at least a mobile station and a first antenna to be used at least as a transmission antenna of the mobile station. In the method the strength of at least one interference signal generated in the electronic device is determined, a compensation signal corresponding to the strength of the determined interference signal is produced, and said compensation signal is combined to a signal received through a second antenna. The combined signal is directed to the positioning receiver.

Abstract: A radio device and an antenna structure comprising a ground plane, at least a first and a second radiator, both radiators being configured to provide at least one resonance frequency in order to provide at least one frequency band. The antenna structure further comprises separate feed points for both radiators grounded to the ground plane. The first radiator is configured to provide at least two frequency bands, at least one of the frequency bands being at least partly overlapping with at least one frequency band provided by the second radiator. In addition, at least the first radiator is a groove plane antenna such that coupling of the radiators with each other at least within the partly overlapping frequency range is substantially avoided.

Abstract: A mobile station and an antenna arrangement for a mobile station, comprising an integrated antenna, an antenna ground plane and an antenna raising component arranged to keep the antenna at a determined height in respect of the ground plane. The antenna, the antenna ground plane and the antenna raising component are arranged in a space shared with a speaker of the mobile station. The antenna is substantially higher than the space between a back cover and a circuit board in the mobile station.

Abstract: A radio device and an antenna structure, wherein a groove (103) provided in a planar radiator (110) of the antenna is used to generate resonances for different frequency ranges, enabling the generation of more than one separate frequency ranges and at least one frequency range covering several mobile communication system bandwidths used. The groove (103) is implemented on the planar radiator (110) such that at least part of the groove is located between a feed point (101) and a ground point (102).

Abstract: The invention relates to a method for attenuating interference in a positioning receiver of an electronic device, in which method a signal transmitted by satellites of a positioning system is received through a second antenna. The electronic device further comprises at least a mobile station and a first antenna to be used at least as a transmission antenna of the mobile station. In the method the strength of at least one interference signal generated in the electronic device is determined, a compensation signal corresponding to the strength of the determined interference signal is produced, and said compensation signal is combined to a signal received through a second antenna. The combined signal is directed to the positioning receiver.

Abstract: A radio device and an antenna structure, wherein a groove (103) provided in a planar radiator (110) of the antenna is used to generate resonances for different frequency ranges, enabling the generation of more than one separate frequency ranges and at least one frequency range covering several mobile communication system bandwidths used. The groove (103) is implemented on the planar radiator (110) such that at least part of the groove is located between a feed point (101) and a ground point (102).

Abstract: The invention relates to a method for performing authentication in a communication device (1), in which identification data is stored in connection with the communication device. In the method, the authentication is divided in at least two authentication steps, wherein in the first authentication step, at least one security inquiry containing identification data of the communication device (1) is transmitted to the communication device (1). In the communication device (1), said identification data contained in the security inquiry is examined to find out if the identification data matches with the identification data stored in the communication device (1). If the comparison shows that the identification data do not match, a time control is started, wherein the processing of the next security inquiry message to be transmitted to the communication device (1) is started in the communication device (1) after the expiry of said time control.

Abstract: A mobile station and an antenna arrangement for a mobile station, comprising an integrated antenna, an antenna ground plane and an antenna raising component arranged to keep the antenna at a determined height in respect of the ground plane. The antenna, the antenna ground plane and the antenna raising component are arranged in a space shared with a speaker of the mobile station. The antenna is substantially higher than the space between a back cover and a circuit board in the mobile station.

Abstract: The invention concerns an arrangement for coupling external antennas (14, 15) to a communication unit (20).

Abstract: The invention relates to a method for measuring a radio frequency signal in a wireless station (1). In this method, radio frequency power is measured by means of testing equipment (6, 7, 12), which comprises at least a testing apparatus (7), a measuring head (6) and means (12) for transmitting electrical signals between said testing apparatus (7) and measuring head (6). The wireless station (1) comprises at least one radio part (8), a wiring board (2), an antenna (5) and switching means (3, 22). This test switch has at least an first position, in which the radio frequency signal is directed between the radio part (8) of the wireless station (1) and the antenna (5), and a second position, in which the radio frequency signal is directed between the radio part (8) of the wireless station (1) and the testing apparatus (7) via said switching means (3, 22) and the measuring head (6).

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).