公开(公告)号：US12301391B2

公开(公告)日：2025-05-13

申请号：US17729507

申请日：2022-04-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yunseob Song

IPC: H04B5/00 ,  H04B1/16 ,  H04B5/72 ,  H04L25/06 ,  H04L27/00 ,  H04L27/06 ,  H04W4/80

Abstract: Provided is a near-field communication (NFC) receiver. The NFC receiver includes at least one antenna configured to receive an amplitude modulation (AM) signal, a first analog-to-digital converter (ADC) configured to generate an in-phase (I)-sample by sampling the AM signal based on a first clock signal, a second ADC configured to generate a quadrature-phase (Q)-sample by sampling the AM signal based on a second clock signal, the second clock signal having a phase difference of 90° from the first clock signal, and processing circuitry configured to calculate a root-sum-square (RSS) value between the I-sample and the Q-sample, and detect an envelope of the AM signal by using the RSS value.

公开(公告)号：US10320408B2

公开(公告)日：2019-06-11

申请号：US15862794

申请日：2018-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Young-Hun Kim ,  Yunseob Song ,  Jonghwa Won ,  Wangseup Yeum

IPC: H03K5/153 ,  H03M1/18 ,  H03K5/003 ,  G01R19/04 ,  H03G3/30 ,  H03G7/08 ,  H03K5/1532 ,  G01R35/00

Abstract: An electronic circuit includes a peak detector, a gain controller, and a compressor. The peak detector detects a peak level from a digital input. The gain controller outputs a digital gain with regard to increasing the peak level to a target level, The compressor provides the gain controller with a compressed gain which is to be output as the digital gain, based on the detected peak level. In a compression interval where the peak level is greater than a threshold level, the output digital gain increases as the peak level decreases. The compressor generates the compressed gain such that a ratio of an increment of the output digital gain to a decrement of the peak level in the compression interval is less than a reference ratio.