公开(公告)号：US11736115B2

公开(公告)日：2023-08-22

申请号：US17560400

申请日：2021-12-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngsea Cho ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

IPC: H03M1/12 ,  H03M1/46

CPC classification number: H03M1/466 ,  H03M1/1245

Abstract: Provided are an analog-to-digital converter and/or an operating method thereof. The analog-to-digital converter includes a sample/hold circuit, a digital-to-analog converter, a comparing circuit, and a control logic circuit, wherein the digital-to-analog converter includes a first capacitor connected to a first comparison node and a first filtering node, a first reference voltage switch connected to the first filtering node and connected to a first delivery node or a first transmission node, a first pre-charge switch connected to the first filtering node or the first delivery node, and a first pre-charge capacitor connected to the first pre-charge switch and a ground voltage.

公开(公告)号：US12224760B2

公开(公告)日：2025-02-11

申请号：US18422192

申请日：2024-01-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Youngsea Cho ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

IPC: H03M1/38 ,  H03M1/06 ,  H03M1/66

Abstract: A current steering digital-to-analog converter includes a plurality of current cells each including a current source circuit and a current switch circuit to selectively output a current in response to a first input signal corresponding to a digital signal; a dummy current cell including a dummy current source circuit and a dummy current switch circuit to output a current in response to a second input signal; and a current switch bias circuit coupled to the dummy current cell to track a first voltage of an internal node of the dummy current source circuit and configured to generate a first bias voltage applied to the current switch circuit.

公开(公告)号：US11870471B2

公开(公告)日：2024-01-09

申请号：US18151711

申请日：2023-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngsea Cho ,  Jiseon Paek ,  Wan Kim ,  Daechul Jeong

IPC: H04B1/00 ,  H04B1/16 ,  H04B1/62

CPC classification number: H04B1/0017 ,  H04B1/1676 ,  H04B1/62

Abstract: A digital radio frequency (RF) transmitter including processing circuitry configured to generate first through third pattern signals based on a pattern of an inphase (I)-quadrature (Q) binary data pair and a pattern of an inverted I-Q binary data pair, the first through third pattern signals having a same pattern and different phases, and a switched-capacitor digital-to-analog converter (SC-DAC) configured to remove an n-th harmonic component of an RF analog signal by amplifying the first through third pattern signals to have a certain magnitude ratio and synthesizing the amplified first through third pattern signals into the RF analog signal, where “n” is an integer of at least 3, may be provided.

公开(公告)号：US11552655B2

公开(公告)日：2023-01-10

申请号：US17196463

申请日：2021-03-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngsea Cho ,  Jiseon Paek ,  Wan Kim ,  Daechul Jeong

IPC: H04B1/00 ,  H04B1/16 ,  H04B1/62

Abstract: A digital radio frequency (RF) transmitter including processing circuitry configured to generate first through third pattern signals based on a pattern of an inphase (I)-quadrature (Q) binary data pair and a pattern of an inverted I-Q binary data pair, the first through third pattern signals having a same pattern and different phases, and a switched-capacitor digital-to-analog converter (SC-DAC) configured to remove an n-th harmonic component of an RF analog signal by amplifying the first through third pattern signals to have a certain magnitude ratio and synthesizing the amplified first through third pattern signals into the RF analog signal, where “n” is an integer of at least 3, may be provided.

公开(公告)号：US11916562B2

公开(公告)日：2024-02-27

申请号：US17673127

申请日：2022-02-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Youngsea Cho ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

IPC: H03M1/38 ,  H03M1/06 ,  H03M1/66

CPC classification number: H03M1/0617 ,  H03M1/38 ,  H03M1/66

Abstract: A current steering digital-to-analog converter includes a plurality of current cells each including a current source circuit and a current switch circuit to selectively output a current in response to a first input signal corresponding to a digital signal; a dummy current cell including a dummy current source circuit and a dummy current switch circuit to output a current in response to a second input signal; and a current switch bias circuit coupled to the dummy current cell to track a first voltage of an internal node of the dummy current source circuit and configured to generate a first bias voltage applied to the current switch circuit.

公开(公告)号：US11349514B2

公开(公告)日：2022-05-31

申请号：US17215503

申请日：2021-03-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngsea Cho ,  Jiseon Paek ,  Wan Kim ,  Daechul Jeong

IPC: H04L5/12 ,  H04L23/02 ,  H04B1/04 ,  H04B1/00

Abstract: A radio frequency (RF) transmitter including a switched-capacitor digital-to-analog converter (SC-DAC) configured to selectively generate a first RF output signal having a first output power control range or a second RF output signal having a second output power control range from input signals received through a plurality of lines may be provided.