公开(公告)号：US10924151B2

公开(公告)日：2021-02-16

申请号：US17002146

申请日：2020-08-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taewan Kim ,  Chia-Hsin Wu ,  Qing Liu

IPC: H04B1/40 ,  H04B1/04 ,  H04W88/06 ,  H03H7/38 ,  H03F1/56 ,  H03F3/72 ,  H03F3/45 ,  H04B1/3805 ,  H03F3/24

Abstract: A transmitter device which transmits a first transmit signal and a second transmit signal having different wireless communication standards. The transmitter device includes a power amplifier that amplifies the first transmit signal in a first transmission mode. A first impedance circuit provides the amplified first transmit signal to a radio frequency output port. A second impedance circuit is connected to the first impedance circuit and provides an additional impedance to the first impedance circuit in the first transmission mode. A first switch provides the second transmit signal to the first impedance circuit in a second transmission mode. A second switch connects the second impedance circuit and a ground in the first transmission mode, and floats the second impedance circuit in the second transmission mode.

公开(公告)号：US10778276B2

公开(公告)日：2020-09-15

申请号：US15988147

申请日：2018-05-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taewan Kim ,  Chia-Hsin Wu ,  Qing Liu

IPC: H04B1/40 ,  H04B1/04 ,  H04W88/06 ,  H03H7/38 ,  H03F3/24 ,  H03F1/56 ,  H03F3/72 ,  H03F3/45 ,  H04B1/3805

Abstract: A transmitter device which transmits a first transmit signal and a second transmit signal having different wireless communication standards. The transmitter device includes a power amplifier that amplifies the first transmit signal in a first transmission mode. A first impedance circuit provides the amplified first transmit signal to a radio frequency output port. A second impedance circuit is connected to the first impedance circuit and provides an additional impedance to the first impedance circuit in the first transmission mode. A first switch provides the second transmit signal to the first impedance circuit in a second transmission mode. A second switch connects the second impedance circuit and a ground in the first transmission mode, and floats the second impedance circuit in the second transmission mode

公开(公告)号：US09960795B1

公开(公告)日：2018-05-01

申请号：US15584116

申请日：2017-05-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Qing Liu ,  Dae Hyun Kwon ,  Hui Changhsiang

IPC: H04B1/06 ,  H04B7/00 ,  H04B1/04 ,  H03F3/19 ,  H03F3/24 ,  H04W84/04

CPC classification number: H04B1/0475 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/165 ,  H03F2200/333 ,  H03F2200/411 ,  H03F2200/451 ,  H04B2001/0408 ,  H04W84/042

Abstract: Provided are a semiconductor device and an operating method thereof. A semiconductor device includes a mixer configured to upconvert a baseband signal using a local oscillator (LO) signal; and a notch filter configured to receive the upconverted signal from the mixer and filter notch frequency components, the notch filter further configured to resonate at a fundamental frequency to provide a higher impedance and resonate at a notch frequency different from the fundamental frequency to provide a lower impedance.