Radio transceiver with two frequency bands

A method for handling signals in a radio apparatus arranged to

• optionally operate in two frequency bands so that, in at least one frequency band, transmission and reception are carried out by using time division multiplexing, and
• to use a predetermined set of common intermediate frequency components for reception in both frequency bands;
• wherein according to said method
• when operating in the first frequency band, the received signal with radio frequency is first mixed onto a first intermediate frequency and then onto a second intermediate frequency before leading it to the intermediate frequency components common for the operation in both frequency bands;
• and
• when operating in the second frequency band, the received signal with radio frequency is mixed in one mixer onto an intermediate frequency, which is substantially equal to said second intermediate frequency, before leading the signal to the intermediate frequency components common for the operation in both frequency bands.

A terminal of a cellular radio system for transmission and reception of radio signals with two frequency bands and for using time division multiplexing for transmission and reception in at least one frequency band, the terminal of the cellular radio system comprising

• a radio transceiver including a first signal input for receiving a radio signal in the first frequency band, and a second signal input for receiving a radio signal in the second frequency band;
• and in said radio transceiver
• a first mixer connected to the first signal input for mixing the radio signals of the first frequency band onto a predetermined first intermediate frequency,
• a second mixer for mixing said first intermediate frequency onto a predetermined second intermediate frequency, and
• a third mixer connected to the second signal input for mixing the radio signals of the second frequency band onto a predetermined frequency which is substantially the same as said second intermediate frequency.