Synthesizer arrangement and a method for generating signals, particularly for a multimode radio telephone device

A transceiver system for a multimode radio telephone device comprising:

• a first part comprising a first antenna and first RF means for receiving and/or transmitting signals, as well as first digital processing means for processing said signals and generating a first control signal,
• a second part comprising a second antenna and second RF means for receiving and/or transmitting signals, as well as second digital processing means for processing said signals and generating a second control signal, and
• stable crystal oscillator means for generating a frequency reference signal,
• wherein for generating two or more signals simultaneously, the transceiver system also comprises:
• first synthesizer means arranged to independently generate a first signal from the frequency reference signal, as their output said first signal, and as their input a first control signal controlling the generation, on the basis of which the first signal is independently modified, wherein the first signal is coupled to the first RF means, and
• second synthesizer means arranged to independently generate a second signal from the frequency reference signal, as their output said second signal, and as their input a second control signal controlling the generation, on the basis of which the first signal is changed independently, wherein the second signal is coupled to the second RF means.

A method for generating two or more signals, in which method:

• stable crystal oscillator means are used to generate a frequency reference signal,
• wherein the method also comprises the steps of:
• inputting said frequency reference signal in first synthesizer means for generating a first signal from the frequency reference signal in the output, and simultaneously inputting in them a first control signal for controlling the generation, on the basis of which the first signal is corrected independently, and
• inputting said frequency reference signal simultaneously also in second synthesizer means for generating a second signal from the frequency reference signal in the output, and simultaneously inputting in them a separate second control signal for controlling the generation, on the basis of which the second signal is corrected independently.