US 12,170,535 B2
Electronic device and method for obtaining reverse signal and feedback signal in wireless communication system
Munwoo Lee, Suwon-si (KR); Jungwoo Ku, Suwon-si (KR); Youngyoon Woo, Suwon-si (KR); Dogeun Eum, Suwon-si (KR); and Seonghyeon Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 22, 2023, as Appl. No. 18/188,106.
Application 18/188,106 is a continuation of application No. PCT/KR2023/003382, filed on Mar. 13, 2023.
Claims priority of application No. 10-2022-0063783 (KR), filed on May 24, 2022; and application No. 10-2022-0067260 (KR), filed on May 31, 2022.
Prior Publication US 2023/0387948 A1, Nov. 30, 2023
Int. Cl. H04B 1/04 (2006.01)
CPC H04B 1/0475 (2013.01) [H04B 2001/0408 (2013.01)] 20 Claims
OG exemplary drawing
 
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.