Patent ID: 7466968
Filing Date: 2008-12-16
Classification: H04B

Abstract:
1. A radio frequency transceiver, comprising: a single multi-band voltage controlled oscillator (VCO) providing a low band VCO frequency output signal and a high band VCO frequency output signal for use by the transmitter portion of the transceiver; a multiplier circuit for multiplying the low band VCO frequency output signal by a factor X, and producing a first local oscillator signal for use by a direct conversion receiver portion of the transceiver when the receiver is operating in a first receive mode in which the multi-band VCO is not operating at the same frequency as the frequency wanted by the receiver portion; and a divider circuit for dividing the high band VCO frequency signal by a factor Y and producing a second local oscillator signal for use by the receiver portion when the receiver portion is operating in a second receive mode in which the multi-band VCO is not operating at the same frequency as the frequency wanted by the receiver portion.