CPC H04B 1/0475 (2013.01) [H04B 2001/0408 (2013.01)] | 20 Claims |
1. An electronic device comprising:
a digital pre-distortion (DPD);
a digital-to-analog converter (DAC);
a power amplifier (PA);
a first coupler configured to obtain a feedback signal from an output of the PA;
a circulator configured to obtain a reverse signal in which the output of the PA is reflected;
a transmission filter connected to the PA through the first coupler and the circulator;
a second coupler configured to obtain a filter-feedback signal from an output of the transmission filter;
an analog-to-digital converter (ADC) configured to convert a composite signal including the feedback signal, the filter-feedback signal, and the reverse signal into a digital composite signal; and
separation circuitry,
wherein the separation circuitry is configured to, based on the digital composite signal and an input signal of the DPD, obtain a digital signal of the feedback signal, a digital signal of the filter-feedback signal, and a digital signal of the reverse signal.
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