Patent ID: 7415286

Claim:
A multi-band integrated circuit radio transceiver, comprising: a plurality of receive and transmit radio front end circuit blocks for processing ingoing and outgoing communication signals, respectively; a local oscillation generator for generating a local oscillation for use by the plurality of receive and transmit radio front end circuit blocks to down convert received RF signals to baseband or low intermediate frequency signals and for use by the plurality of receive and transmit radio front end circuit blocks to up-convert outgoing communication signals to RF, respectively; at least one buffering element coupled between the local oscillation generator and at least one front end circuit block, which at least one buffering element produces a buffered oscillation based upon the local oscillation to the at least one front end circuit block; and wherein the at least one buffering element includes: a differentially arranged amplifier stage having an inductive load operably coupled to an output node of the amplifier stage, the inductive load further including a selectable element to adjust a frequency of operation; and a cross-coupled capacitive element coupled between an input node and the output node of the amplifier stage, the cross-coupled capacitive element having at least one selectable capacitive element.