Transmitter with compensating mechanism of pulling effect
AssigneeRealtek Semiconductor Corp.
InventorsWen-Shan Wang, Yuan-Shuo Chang, Chih-Chieh Wang
Life of this patent
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Abstract
A transmitter with compensating mechanism of pulling effect includes an output unit and a correction unit. The output unit mixes a first correction signal and a second correction signal according to an oscillating signal to generate a modulated signal, and to amplify the modulated signal to generate a first output signal. The correction unit analyzes the power of the first output signal to generate a first coefficient and a second coefficient, and generate the first correction signal and the second correction signal according to the first coefficient, the second coefficient, an in-phase data signal, and a quadrature data signal.
Claims20
A transmitter, comprising:
- an output circuit configured to mix a first correction signal and a second correction signal according to an oscillating signal to generate a modulation signal, and amplify the modulation signal, to generate a first output signal, wherein the first correction signal and the second correction signal are for eliminating a pulling effect associated with the first output signal;
- and
- a correction circuit configured to analyze a power of the first output signal to generate a first coefficient and a second coefficient, and generate the first correction signal and the second correction signal according to the first coefficient and the second coefficient, an in-phase data signal, and a quadrature data signal.
A correction method, comprising:
- analyzing a power of a first output signal output by a transmitter, to generate a first coefficient and a second coefficient;
- generating a pre-phase correction signal according to the first coefficient and the second coefficient;
- and
- generating a first correction signal and a second correction signal to the transmitter according to the pre-phase correction signal, an in-phase data signal, and a quadrature data signal, wherein the first correction signal and the second correction signal are for eliminating a pulling effect associated with the first output signal.
Dependencies are inferred from the claim text.