| 摘要 |
The invention relates to a VCO (100, 130) integrated in a radio ASIC, wherein a switch (180, 60, 70, 80, 90) is arranged for switching the centre frequency of the VCO between arbitrary frequency bands to be able to perform band switching and/or frequency tuning. In a preferred embodiment, the switch switches the centre frequency of the VCO (100, 130) between the DCS-band and the PCS-band. Thus, instead of having one VCO for the DCS-band and another one for the PCS-band, the invention uses only one VCO for both bands saving a lot of valuable space on the ASIC. |
