Receiving circuit and method for receiving an amplitude shift keying signal
AssigneeAtmel Corporation
InventorsUlrich Grosskinsky, Werner Blatz
Life of this patent
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Abstract
A receiving circuit and method for receiving an amplitude shift keying signal is provided. At least one exponent signal, an exponent-removed in-phase signal, and an exponent-removed quadrature-phase signal are generated from an in-phase input signal and a quadrature-phase input signal. An amplitude is determined as a sum of several summands, whereby the summands are determined from the exponent signal and/or from the exponent-removed in-phase signal and/or from the exponent-removed quadrature-phase signal (Q′), and wherein the amplitude (A) is demodulated.
Claims14
A receiving circuit for receiving an amplitude shift keying signal, the receiving circuit comprising:
- a first transmission element configured to divide an in-phase input signal and a quadrature-phase input signal into a plurality of output signals at a plurality of outputs;
- a summator configured to determine an amplitude as a sum of a plurality of summands;
- and
- an evaluation logic connectable to the summator and the first transmission element,
- wherein the first transmission element is configured to output an exponent signal as an output signal with a value of a base 2 exponent at an exponent output of the plurality of outputs,
- wherein the first transmission element is configured to output an exponent removed in-phase signal at an in-phase output and an exponent-removed quadrature-phase signal at a quadrature-phase output of the plurality of outputs, and
- wherein the evaluation logic is configured to determine the plurality of summands from the exponent signal from the exponent-removed in-phase signal and from the exponent-removed quadrature-phase signal.
A method for receiving an amplitude shift keying signal, the method comprising:
- generating at least one exponent signal, an exponent-removed in-phase signal, and an exponent-removed quadrature-phase signal from an in-phase input signal and a quadrature-phase input signal;
- determining an amplitude as a sum of several summands, the summands being determined from the exponent signal and from the exponent-removed in-phase signal and from the exponent-removed quadrature-phase signal;
- and
- demodulating the amplitude.
A method for determining an amplitude, the method comprising:
- receiving and dividing an in-phase signal and a quadrature-phase signal;
- outputting an exponent removed in-phase signal;
- outputting an exponent removed quadrature-phase signal;
- outputting an exponent signal having a value of a base 2 exponent;
- and
- determining an amplitude as a sum of several summands, the summands being determined from the exponent signal and from the exponent-removed in-phase signal and from the exponent-removed quadrature-phase signal.
Dependencies are inferred from the claim text.