Signal transmitting device and signal transmitting method
AssigneeMediatek Inc.
InventorsYen-Lin Huang, Hsiang-Hui Chang
Life of this patent
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Abstract
A signal transmitting device includes: a signal processing circuit arranged to process an input signal to generate a processed input signal according to a compensating signal; a signal converting circuit arranged to convert the processed input signal to generate an output signal according to an oscillating signal; and an arithmetic circuit arranged to generate the compensating signal according to the power of a predetermined component in the output signal, wherein the signal processing circuit uses the compensating signal to update the input signal, and the signal converting circuit converts the updated input signal to reduce the power of the predetermined component in the output signal.
Claims19
A signal transmitting device, comprising:
- a signal processing circuit, arranged to process an input signal to generate a processed input signal according to a compensating signal;
- a signal converting circuit, arranged to convert the processed input signal to generate an output signal according to an oscillating signal;
- and
- an arithmetic circuit, arranged to generate the compensating signal according to a power of a predetermined component in the output signal, wherein the compensating signal comprises compensation components corresponding to the predetermined component in the output signal, and the predetermined component comprises a third order in-band component and a third order out-band component of the output signal, or the predetermined component comprises a fifth order in-band component and a fifth order out-band component of the output signal;
- wherein the signal processing circuit uses the compensating signal to add the compensation components to the input signal to update the input signal, and the signal converting circuit converts the updated input signal to reduce the power of the predetermined component in the output signal.
A signal transmitting method, comprising:
- processing an input signal to generate a processed input signal according to a compensating signal;
- converting the processed input signal to generate an output signal according to an oscillating signal;
- generating the compensating signal according to a power of a predetermined component in the output signal, wherein the compensating signal comprises compensation components corresponding to the predetermined component in the output signal, and the predetermined component comprises a third order in-band component and a third order out-band component of the output signal, or the predetermined component comprises a fifth order in-band component and a fifth order out-band component of the output signal;
- using the compensating signal to add compensation components to the input signal to update the input signal;
- and
- converting the updated input signal to reduce the power of the predetermined component in the output signal.
Dependencies are inferred from the claim text.