Filter auto-calibration using multi-clock generator

摘要

A filter auto-calibration system includes a multi-clock module. The multi-clock module includes a multi-clock generator that is configured to generate a clock signal with a variable frequency based on a channel setting. There is at least one filter to be calibrated. An auto-calibration control module is configured to control calibration of the at least one filter based on the channel setting. The multi-clock module is configured to supply the variable frequency clock signal to the at least one filter and to the auto-calibration control module, and the at least one filter is coupled to the auto-calibration control module.

主权项

1. A filter auto-calibration system, comprising:
a multi-clock module, including
a multi-clock generator configured to generate a first variable frequency signal based on a channel setting, the multi-clock generator comprising a quadrature signal generator configured to generate an in-phase component and a quadrature component of the first variable frequency signal; anda mixer configured to generate an in-phase component and a quadrature component of a quadrature signal from a received signal other than the first variable frequency signal; at least one filter to be calibrated; an auto-calibration control module coupled to the multi-clock module and the at least one filter, the auto-calibration control module configured to receive the in-phase component and quadrature component of the first variable frequency signal from the multi-clock module, and configured to control calibration of the at least one filter based on the channel setting; and a switch coupled to the auto-calibration control module configured to selectively connect the multi-clock generator to the at least one filter in an auto-calibration mode to supply the in-phase component and quadrature component of the first variable frequency signal to the at least one filter and to connect the mixer to the at least one filter if the auto-calibration mode is complete.