US Patent Application 18209473. SYSTEMS, METHODS AND DEVICES FOR JOINT CALIBRATION OF TRANSMIT AND RECEIVE IQ MISMATCH simplified abstract

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SYSTEMS, METHODS AND DEVICES FOR JOINT CALIBRATION OF TRANSMIT AND RECEIVE IQ MISMATCH

Inventors

Elina Nayebi of San Diego CA (US)


Pranav Dayal of San Diego CA (US)


Kee-Bong Song of San Diego CA (US)


Siu-Chuang Ivan Lu of San Jose CA (US)


Sang Won Son of Palo Alto CA (US)


SYSTEMS, METHODS AND DEVICES FOR JOINT CALIBRATION OF TRANSMIT AND RECEIVE IQ MISMATCH - A simplified explanation of the abstract

  • This abstract for appeared for patent application number 18209473 Titled 'SYSTEMS, METHODS AND DEVICES FOR JOINT CALIBRATION OF TRANSMIT AND RECEIVE IQ MISMATCH'

Simplified Explanation

The abstract describes a method for compensating for IQ mismatch (IQMM) in a transceiver. IQMM refers to the difference in the In-phase (I) and Quadrature-phase (Q) components of a signal. The method involves sending signals from a transmit path through a loopback path and introducing a phase shift using a phase shifter. The received signals in the receive path are then used to estimate the IQMM, including the phase shift. These estimates are used to compensate for the IQMM. The method also involves processing the received signals based on frequency-dependent IQMM parameters to obtain more accurate estimates.


Original Abstract Submitted

A method of compensating for IQ mismatch (IQMM) in a transceiver may include sending first and second signals from a transmit path through a loopback path, using a phase shifter to introduce a phase shift in at least one of the first and second signals, to obtain first and second signals received by a receive path, using the first and second signals received by the receive path to obtain joint estimates of transmit and receive IQMM, at least in part, by estimating the phase shift, and compensating for IQMM using the estimates of IQMM. Using the first and second signals received by the receive path to obtain estimates of the IQMM may include processing the first and second signals received by the receive path as a function of one or more frequency-dependent IQMM parameters.

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