Abstract: Measures for fading-based control of an antenna radiation pattern. Such measures may comprise reception of at least one radio wave signal via an antenna unit, detection of fading conditions in relation to the received at least one radio wave signal, and control of an antenna radiation pattern of the antenna unit, at least in terms of antenna lobe width, on the basis of the detected fading conditions.

Abstract: Measures for fading-based control of an antenna radiation pattern. Such measures may comprise reception of at least one radio wave signal via an antenna unit, detection of fading conditions in relation to the received at least one radio wave signal, and control of an antenna radiation pattern of the antenna unit, at least in terms of antenna lobe width, on the basis of the detected fading conditions.

Abstract: A mobile communication device (1) is provided with an antenna (10) having an antenna element (10a) and a conductive ground element (26) to cooperate with the antenna element. In use, RF currents are generated in the conductive ground element and as a result an oscillating electric field arises. The conductive ground element is arranged in the device (1) such that the point of highest electric field is located away from the region where the earpiece (5) is positioned in order to reduce the emission of the electric field to the ear (12). The conductive ground element (26) may be provided in a conductive layer of the Printed Circuit/Wire Board (24) of the device. The point of highest electric field in a in a conductive layer arises at the end of the physical path near a physical end of the layer, which in a conventional flip-phone typically corresponds to the top of the first hinged body part (2) where the earpiece (5) is also positioned.

Abstract: A GPS antenna has two electrically connected L-sections disposed on opposite sides of a circuit board. The L-sections lie on two separate planes parallel to the circuit board surface. One L-section is connected to a feeding point located at one edge area of the circuit board and the other L-section is connected to a grounding point located at an opposite edge area of the circuit board. Optionally, a second grounding point is connected to the antenna element adjacent to the feeding point for impedance matching purposes. The antenna is configured for use in an electronic device such as a mobile phone.

Abstract: A headset has a first and an optional second earpiece 12, 16 respectively coupled to a plug 30 via first and an optional second conductors 14, 20, 18, 22. An antenna loop section 36 has a first loop section 31 at least partially bound to a portion of the first conductor 20, and a second loop section 33 bound to at least a portion of the second conductor 22. Where bound, the first conductor and first loop section may be coaxial or side-by-side. The loop sections include inductors 42,44, and the conductors include ferrite rings 38,40 near the earpieces. A connector 24 mechanically holds the first and second conductors in proximity to one another, and also includes a conductive bridge 34 to electrically couple the first and second loop segments, which may be via a contact connection or a capacitive connection. Audio and RF signals are separated by frequency in a device 50 to which the headset is coupled.

Abstract: A GPS antenna has two electrically connected L-sections disposed on opposite sides of a circuit board. The L-sections lie on two separate planes parallel to the circuit board surface. One L-section is connected to a feeding point located at one edge area of the circuit board and the other L-section is connected to a grounding point located at an opposite edge area of the circuit board. Optionally, a second grounding point is connected to the antenna element adjacent to the feeding point for impedance matching purposes. The antenna is configured for use in an electronic device such as a mobile phone.

Abstract: The invention relates to power amplifiers having an adjustable output impedance. A power amplifier according to the invention can be used, for example, for feeding a radio frequency transmission signal into an antenna of a mobile communication device. The real part of an output impedance of a power amplifier according to the invention is matched with the real part of an impedance loading the power amplifier by adjusting an operating point of an output stage transistor 301 of the power amplifier.

Abstract: A mobile communication device (1) is provided with an antenna (10) having an antenna element (10a) and a conductive ground element (26) to cooperate with the antenna element. In use, RF currents are generated in the conductive ground element and as a result an oscillating electric field arises. The conductive ground element is arranged in the device (1) such that the point of highest electric field is located away from the region where the earpiece (5) is positioned in order to reduce the emission of the electric field to the ear (12). The conductive ground element (26) may be provided in a conductive layer of the Printed Circuit/Wire Board (24) of the device. The point of highest electric field in a in a conductive layer arises at the end of the physical path near a physical end of the layer, which in a conventional flip-phone typically corresponds to the top of the first hinged body part (2) where the earpiece (5) is also positioned.

Abstract: The invention relates to power amplifiers having an adjustable output impedance. A power amplifier according to the invention can be used, for example, for feeding a radio frequency transmission signal into an antenna of a mobile communication device. The real part of an output impedance of a power amplifier according to the invention is matched with the real part of an impedance loading the power amplifier by adjusting an operating point of an output stage transistor 301 of the power amplifier.

Abstract: A hand-portable radio communications device comprising: including a first conducting plane in a first portion of the device; a second conducting plane in a second portion of the device; an antenna element connected to one of the first or second conducting planes; and a mechanism for enabling relative movement of the first and second portions of the device between a first configuration in which a first interconnect path exists between the first conducting plane and the second conducting plane and a second configuration in which a second different interconnect path exists between the first conducting plane and the second conducting plane.

Abstract: An antenna module for use in a small communications device. The antenna module comprises a dielectric block disposed on a circuit board having a ground plane, an elongated planar strip element folded to fit on different surfaces of the dielectric block, and one or more parasitic element disposed adjacent to the antenna element. In particular, the antenna element is designed to produce resonance frequencies at GSM850 and E-GSM900 bands (the lower bands) and one resonance for the GSM1800/GSM1900/WCDMA2100 bands (the upper bands). The dielectric block can be made of soft or hard plastic.

Abstract: An antenna module for use in a small communications device. The antenna module comprises a dielectric block disposed on a circuit board having a ground plane, an elongated planar strip element folded to fit on different surfaces of the dielectric block, and one or more parasitic element disposed adjacent to the antenna element. In particular, the antenna element is designed to produce resonance frequencies at GSM850 and E-GSM900 bands (the lower bands) and one resonance for the GSM1800/GSM1900/WCDMA2100 bands (the upper bands). The dielectric block can be made of soft or hard plastic.

Abstract: A headset has a first and an optional second earpiece 12, 16 respectively coupled to a plug 30 via first and an optional second conductors 14, 20, 18, 22. An antenna loop section 36 has a first loop section 31 at least partially bound to a portion of the first conductor 20, and a second loop section 33 bound to at least a portion of the second conductor 22. Where bound, the first conductor and first loop section may be coaxial or side-by-side. The loop sections include inductors 42,44, and the conductors include ferrite rings 38,40 near the earpieces. A connector 24 mechanically holds the first and second conductors in proximity to one another, and also includes a conductive bridge 34 to electrically couple the first and second loop segments, which may be via a contact connection or a capacitive connection. Audio and RF signals are separated by frequency in a device 50 to which the headset is coupled.