Patent ID: 6999723
Filing Date: 2006-02-14
Classification: H04B

Abstract:
1. A method for reducing effects of spurious frequencies in a wireless communications device, the method comprising: operating a transceiver in a first mode of operation comprising one of an analog mode and a digital mode; selecting a first passband frequency range of a plurality of selectable passband frequency ranges, the first passband frequency range corresponding to the first mode of operation; operating a processor in the first mode of operation at a first processor clock frequency of a plurality of processor clock frequencies; switching operation of the transceiver to a second mode of operation comprising the analog mode and the digital mode; selecting a second passband frequency range of the plurality of selectable passband frequency ranges, the second passband frequency range corresponding to the second mode of operation; operating the transceiver in the second mode of operation using the selected second passband frequency range; selecting a second processor clock frequency of the plurality of processor clock frequencies that produces no substantial spurious signals in the selected second passband frequency range; operating the processor at the selected second processor clock frequency; and maintaining operation of the processor with the selected second processor clock frequency during the operation of the transceiver in the second mode of operation and at the selected second passband frequency range.