公开(公告)号：US20240069184A1

公开(公告)日：2024-02-29

申请号：US18223193

申请日：2023-07-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyungwoo YOO ,  Hyung Sun LIM ,  Dooseok CHOI ,  Joonhoi HUR

IPC: G01S13/32 ,  G01S7/35

CPC classification number: G01S13/32 ,  G01S7/356

Abstract: An electronic device is provided. The electronic device includes: a transceiver configured to transmit or receive a wireless signal; and a processor configured to: control a first detector to detect whether an object is within a first distance range, based on a transmission/reception power ratio of the wireless signal; control a second detector to detect, based on the object not being detected within the first distance range, whether the object is within a second distance range outside the first distance range, based on a chirp pulse, which is obtained by frequency-modulating the wireless signal; and control transmission power of the wireless signal, based on whether the object is detected by the first detector or the second detector.

公开(公告)号：US20240364275A1

公开(公告)日：2024-10-31

申请号：US18606982

申请日：2024-03-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyungwoo YOO ,  Hongmin CHOI ,  Sanghyun BAEK ,  Hyung Sun LIM

IPC: H03F1/32 ,  H03F3/24 ,  H04B1/04

CPC classification number: H03F1/3241 ,  H03F3/245 ,  H04B1/0475 ,  H03F2200/451 ,  H04B2001/0425

Abstract: A radio-frequency (RF) circuit is provided. The RF circuit includes: a power amplifier; a predistortion circuit configured to predistort an input signal based on reference predistortion information to obtain a predistortion signal, and output the predistortion signal to the power amplifier; and a gain circuit configured to provide a gain, corresponding to a reciprocal of a nonlinear coefficient of the power amplifier, to the predistortion circuit.

公开(公告)号：US20240080052A1

公开(公告)日：2024-03-07

申请号：US18218367

申请日：2023-07-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyungwoo YOO ,  Hyung Sun LIM ,  Hongmin CHOI ,  Joonhoi HUR

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H04B2001/0425

Abstract: Disclosed is an electronic device, which includes a predistorter that predistorts an input signal based on a predistortion coefficient to generate a predistortion signal; a power amplifier that amplifies the predistortion signal to generate an output signal; an error correction unit that updates the predistortion coefficient to minimize an Normalized Mean Square Error (NMSE) between the input signal and the output signal; and an ACLR adjustment unit that operates when the NMSE is minimized, calculates an Adjacent Channel Leakage Ratio (ACLR) from the output signal, and updates the predistortion coefficient to minimize a cost function defined based on the ACLR.