Patent ID: 8681896
Filing Date: 2014-03-25
Classification: H04B,H04L

Abstract:
1. A method comprising: generating a plurality of digital complex tone signals and a plurality of direct current (DC) signals at a transmitter unit of a wireless network device; combining the plurality of digital complex tone signals and the plurality of DC signals to generate a plurality of calibration signals used for performing transmitter in-phase/quadrature (I/Q) mismatch and carrier leak calibration in the wireless network device; modifying one or more of the plurality of calibration signals based, at least in part, on a predefined digital I/Q phase mismatch; modifying one or more of the plurality of calibration signals based, at least in part, on an analog phase shift, wherein at least one of the plurality of calibration signals is modified using both the predefined digital I/Q phase mismatch and the analog phase shift; providing the plurality of calibration signals from the transmitter unit to a receiver unit of the wireless network device via a loopback path coupled between the transmitter unit and the receiver unit; processing the plurality of calibration signals to determine transmitter I/Q mismatch and carrier leak parameters for the transmitter unit; and programming the transmitter unit to compensate for transmitter I/Q mismatch and carrier leak based, at least in part, on the transmitter I/Q mismatch and carrier leak parameters.