Abstract: The present invention relates to a method for controlling a frequency in a receiver, in particular in a receiver used in a telecommunications system.

Abstract: The present invention relates to a method for controlling a frequency in a receiver, in particular in a receiver used in a telecommunications system.

Abstract: The present invention relates to a method for controlling a multi-band and/or multi-mode wireless device, that is provided with an automatic operating mode selection mechanism. To speed up the search for an accessible communications network and to simultaneously reduce power consumption, the method comprises the steps of searching for a communications network by scanning that group of frequency band or operating modes first that were used during the last successful operation, and continuing the search through other possible frequency bands or modes only in the case that no accessible network was found in the group of frequency bands or modes searched first.

Abstract: An antenna system for a radio telephone in a vehicle that has a primary antenna to realize telephone communication with optimal connection quality connected to the radio telephone by an antenna wire, a secondary antenna that at least allows for telephone communication with limited connection quality when the primary antenna fails and an electric switch that connects the secondary antenna to the radio telephone after the primary antenna fails. This is realized in that the primary antenna is mounted on the vehicle with a breakable fastening element and that the switch automatically connects the secondary antenna to the antenna wire by mechanical means in place of the primary antenna when the fastening element is broken off.

Abstract: This invention relates to a radio transceiver operable in multiple modes. The transceiver is operable, in one embodiment, to communicate with digital and analogue modulation format cellular radio systems. The handset utilizes a novel frequency plan and architecture to enable a minimum level of complexity for dual-moe operation. The frequency plan preferably uses two local oscillators 1LO, 2LO to general all the required frequencies for both the digital and analogue modulation format transceivers, derived from a single reference crystal oscillator. A radio architecture is used to enable switchable dual-mode operation with maximum commonality of functional blocks to facilitate silicon integration.