Signal transmitter device, detection circuit, and signal detection method thereof
AssigneeRealtek Semiconductor Corp.
InventorYuan-Shuo Chang
Life of this patent
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Abstract
A signal transmitter device includes a transmitter and a detection circuit. The transmitter is configured to transmit an output signal based on a first baseband signal and a second baseband signal, in which the first baseband signal and the second baseband signal have a baseband frequency. The detection circuit is configured to perform twice signal modulations according to the output signal to detect a signal component, which has the baseband frequency, of the output signal, in order to control a compensation circuit to correct a channel mismatch of the transmitter.
Claims20
A signal transmitter device, comprising:
- a transmitter configured to transmit an output signal based on a first baseband signal and a second baseband signal, wherein the first baseband signal and the second baseband signal have a baseband frequency;
- and
- a detection circuit configured to perform twice signal modulations according to the output signal to detect a signal component, which has the baseband frequency, of the output signal, in order to control a compensation circuit to correct a channel mismatch of the transmitter.
A detection circuit configured to detect an output signal of a transmitter, the detection circuit comprising:
- a first mixer configured to perform a first square operation according to the output signal, in order to generate a first processed signal;
- a first filter configured to perform a first filtering operation according to the first processed signal, in order to generate a second processed signal;
- and
- a second mixer configured to perform a second square operation according to the second processed signal, in order to generate a third processed signal,
- wherein the third processed signal is further processed by a compensation circuit, in order to correct a channel mismatch of the transmitter.
A signal detection method, comprising:
- performing, by a first mixer, a first signal modulation according to an output signal of a transmitter, in order to generate a first processed signal;
- performing, by a first filter, a first filtering operation according to a first processed signal, in order to generate a second processed signal;
- and
- performing, by a second mixer, a second signal modulation according to the second processed signal, in order to generate a third processed signal,
- wherein the third processed signal is processed by a compensation circuit, in order to correct a channel mismatch of the transmitter.
Dependencies are inferred from the claim text.