Patent ID: 7254164
Filing Date: 2007-08-07
Classification: H03F

Abstract:
1. A radio frequency (RF) transceiver integrated circuit, comprising: a local oscillator that generates an RF local oscillation signal corresponding to an RF channel; a receiver section operably coupled to the local oscillator to receive the RF local oscillation signal, wherein the receiver section receives an incoming RF signal, and wherein the receiver section down-converts the incoming RF signal based upon the RF local oscillation signal to produce an incoming baseband signal; a transmitter section operably coupled to the local oscillator to receive the RF local oscillation signal, wherein the transmitter section receives an outgoing baseband signal, and wherein the transmitter section up-converts the outgoing baseband signal to produce an outgoing RF signal; wherein the local oscillator further comprises a phase locked loop that generates a phase locked loop oscillation signal that further comprising a multi-stage class AB transconductance block for producing a linearized transconductance current as a part of converting a voltage to a current in a mixing stage of the phase locked loop; and wherein the multi-stage class AB transconductance block further comprises: