US 8,803,546 B2 · Method for performing power detection, and associated apparatus

Abstract

An apparatus for performing power detection includes a squarer module and a calibration module that is coupled to the squarer module, where the squarer module includes a first squarer and a second squarer. The first squarer is arranged to convert an input signal of the squarer module into a first squarer output signal. In addition, the second squarer is arranged to output a second squarer output signal while a predetermined voltage level is input into an input terminal of the second squarer. Additionally, the calibration module is arranged to compare a difference between the first squarer output signal and the second squarer output signal with a reference signal to generate a comparison signal, and to compensate the difference according to the comparison signal, so as to perform a calibration on the apparatus. A method for performing power detection is also provided, and can be performed by utilizing the apparatus.

Claims20

Dependent claims

An apparatus for performing power detection, the apparatus comprising:

a squarer module comprising:
a first squarer arranged to convert an input signal of the squarer module into a first squarer output signal, wherein the first squarer output signal comprises a static component and a variation component, and the variation component is proportional to a root mean square (RMS) value of the input signal;
and
a second squarer arranged to output a second squarer output signal while a predetermined voltage level is input into an input terminal of the second squarer;
and
a calibration module, coupled to the squarer module, arranged to compare a difference between the first squarer output signal and the second squarer output signal with a reference signal to generate a comparison signal, and to compensate the difference according to the comparison signal, so as to perform a calibration on the apparatus.

3 more elements

A method for performing power detection, the power detection being performed by utilizing an apparatus comprising a squarer module, which comprises a first squarer arranged to convert an input signal of the squarer module into a first squarer output signal, and further comprises a second squarer arranged to output a second squarer output signal while a predetermined voltage level is input into an input terminal of the second squarer, the apparatus further comprising a calibration module arranged to compare a difference between the first squarer output signal and the second squarer output signal with a reference signal to generate a comparison signal, and to compensate the difference according to the comparison signal, so as to perform a calibration on the apparatus, the method comprising the steps of:

calibrating a mismatch difference between a static component of the first squarer output signal and the second squarer output signal;
and
after the step of calibrating, measuring a power level of the input signal.

Dependencies are inferred from the claim text.

Method for performing power detection, and associated apparatus

Life of this patent

Method for performing power detection, and associated apparatus

Life of this patent

Abstract

Claims20