| 摘要 |
<p>The present invention relates to a frequency synthesiser (1) for providing receiving and transmitting frequencies in the wireless telecommunication systems GSM, DCS and W-CDMA, running in transmitting and receiving modes, both modes providing respectively three frequency ranges to be used in a transceiving means of a mobile terminal for at least one of the three wireless telecommunication systems, comprising a first and a second oscillating means (2, 3) for generating a first and a second frequency, a first shifting means (4) and a second shifting means (5) for generating the transmitting and receiving frequencies. <IMAGE></p> |
