Transmit power measurement apparatus having programmable filter device that is set at least based on frequency response of transmit power detection path and related transmit power measurement method thereof
AssigneeMediaTek Singapore Pte. Ltd.
InventorsBing Xu, Li-Shin Lai, Chi-Hsueh Wang, Hsiang-Hui Chang
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Abstract
A transmit power measurement apparatus includes a transmit power detection path, a compensation circuit and a tracking circuit. The compensation circuit includes a programmable filter device and a compensation controller. The programmable filter device generates a filter output. The compensation controller sets the programmable filter device at least based on a frequency response of the transmit power detection path. The tracking circuit generates a transmit power tracking result at least based on the filter output.
Claims20
A transmit power measurement apparatus, comprising:
- a transmit power detection path;
- a compensation circuit, comprising:
- a programmable filter device, configured to generate a filter output;
- and
- a compensation controller, configured to set the programmable filter device at least based on a frequency response of the transmit power detection path;
- and
- a tracking circuit, configured to generate a transmit power tracking result at least based on the filter output.
A transmit power measurement method, comprising:
- setting a programmable filter device at least based on a frequency response of a transmit power detection path;
- generating a filter output by utilizing the programmable filter device;
- generating a transmit power tracking result at least based on the filter output;
- and
- when the transmit power detection path is operated in a calibration mode, generating a test transmit signal to the transmit power detection path, receiving a test transmit power detection signal generated from the transmit power detection path in response to the test transmit signal, and obtaining at least one detected frequency response of the transmit power detection path according to the test transmit signal and the test transmit power detection signal, wherein the frequency response of the transmit power detection path is selected from the at least one detected frequency response.
A transmit power measurement method, comprising:
- setting a programmable filter device at least based on a frequency response of a transmit power detection path;
- utilizing the programmable filter device to generate a filter output by processing a transmit power detection signal generated from the transmit power detection path;
- receiving a reference transmit signal;
- calculating an average power of the filter output;
- calculating an average power of the reference transmit signal;
- and
- referring to the average power of the filter output and the average power of the reference transmit signal to calculate a loop gain as the transmit power tracking result.
A transmit power measurement method, comprising:
- setting a programmable filter device at least based on a frequency response of a transmit power detection path;
- generating a filter output by utilizing the programmable filter device;
- and
- generating a transmit power tracking result at least based on the filter output;
- wherein the step of generating the filter output comprises:
- receiving a reference transmit signal;
- and
- utilizing the programmable filter device to generate the filter output by processing the reference transmit signal;
- and
- the step of generating the transmit power tracking result comprises:
- generating the transmit power tracking result based on the filter output and a transmit power detection signal generated from the transmit power detection path.
Dependencies are inferred from the claim text.