Patent ID: 7499684

Claim:
A radio communication device comprising: a first radio integrated circuit (IC) configured to perform one or both of radio transmission or radio reception; a second radio IC configured to perform one or both of radio transmission or radio reception; wherein the first radio IC is configured to generate and use a local oscillator signal for radio transmission and/or radio reception operation, and wherein the local oscillator signal is coupled to the second radio IC for use in its radio transmission and/or radio reception operation, and wherein the first and second radio ICs each comprises a bi-directional port circuit, the bi-directional port circuit in the first radio IC is configured to couple the local oscillator signal to the bi-directional port circuit of the second radio IC, and the bi- directional port circuit in the second radio IC is configured to couple the local oscillator signal from the first radio IC for use by its radio transmitter or radio receiver.