Patent ID: 6999744

Claim:
A method for measuring local oscillation leakage in a radio frequency integrated circuit (RFIC), the method comprises: concurrently enabling a transmitter portion of the RFIC and a receiver portion of the RFIC; providing a zero input to the transmitter portion, wherein the transmitter portion up converts the zero input via a mixer section to produce a radio frequency (RF) signal; detecting the concurrent enablement of the transmitter portion and the receiver portion; measuring received signal strength of the RF signal as received by the receiver portion upon detecting the concurrent enablement; processing the received signal strength over a predetermined time period to obtain a measure of the local oscillation leakage; and adjusting setting of mismatch correction circuitry within digital to analog converters that convert an in-phase component of the zero input into a digital in-phase component and convert a quadrature component of the zero input into a digital quadrature component based on the measure of the local oscillation leakage.