DC offset cancellation method and device
AssigneeSanechips Technology Co., Ltd.
InventorsHaolv Xie, Yongtao Wang, Zhuoyao Wang, Muheng Fu
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Abstract
Disclosed is a DC offset cancellation (DCOC) method, comprising: after a receiver is electrified, acquiring a digital signal of an offset voltage at a circuit output port in the receiver, obtaining a digital control signal for controlling a DCOC output stage from the digital signal, and outputting, by the DCOC output stage, a current to a corresponding circuit of the receiver according to the digital control signal. Also disclosed is a DC offset cancellation device.
Claims12
A direct current offset cancellation (DCOC) method, comprising:
- after a receiver is powered on, obtaining a digital signal of an offset voltage at a circuit output port of the receiver;
- obtaining a digital control signal for controlling a DCOC output stage from the digital signal;
- and outputting, by the DCOC output stage, a current to a corresponding circuit of the receiver according to the digital control signal.
A direct current offset cancellation (DCOC) device, comprising:
- a DCOC Analog-to-Digital Converter (ADC), a digital signal processor and a DCOC output stage, wherein
- the DCOC ADC is configured, after a receiver is powered on, to obtain a digital signal of an offset voltage at a circuit output port of the receiver and to transmit the digital signal to the digital signal processor;
- the digital signal processor is configured to obtain a digital control signal for controlling the DCOC output stage from the digital signal, and to transmit the digital control signal to the DCOC output stage;
- and
- the DCOC output stage is configured to output a current to a corresponding circuit of the receiver according to the digital control signal.
Dependencies are inferred from the claim text.