公开(公告)号：US10044272B2

公开(公告)日：2018-08-07

申请号：US15803395

申请日：2017-11-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ji Seon Paek ,  Dongsu Kim ,  Younghwan Choo

IPC: H03F3/24 ,  H04B1/04 ,  H02M3/158

Abstract: A transmitting device including: a modem configured to generate a baseband signal and an envelope data corresponding to the baseband signal; a supply modulator including a first switched-mode power supplier and a second switched-mode power supplier, the supply modulator configured to provide a modulated voltage to an output node based on the envelope data; and a power amplifier configured to amplify a carrier wave signal by using the modulated voltages, the carrier wave signal being associated with the baseband signal, wherein the first switched-mode power supplier includes: a pulse input node to receive a pulse signal generated in association with the envelope data; and a plurality of stages sequentially connected between the pulse input node and the output node, the plurality of stages configured to adjust the modulated voltage by filtering certain frequency band of the pulse signal, and the plurality of stages includes at least one variable impedance.

公开(公告)号：US09843260B1

公开(公告)日：2017-12-12

申请号：US15400414

申请日：2017-01-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ji Seon Paek ,  Dongsu Kim ,  Younghwan Choo

IPC: H04B1/04 ,  H02M3/158

CPC classification number: H02M3/158 ,  H03F1/0227 ,  H03F3/2173 ,  H03F3/24 ,  H03F2200/102

Abstract: A supply modulator including a first switched-mode power supplier configured to transmit a modulated voltage to an output node in response to an envelope signal, the first switched mode power supplier including: a switching circuit configured to transmit a pulse signal in response to the amplitude of the envelope signal; and a low pass filter configured to generate the modulated voltage by filtering certain frequency band of the pulse signal, the low pass filter comprising a plurality of stages; and a second switched-mode power supplier configured to selectively transmit a compensation current to the output node in response to the current transmitted from the first switched-mode power supplier, wherein each of the plurality of stages of the low pass filter comprises at least one variable impedances.

公开(公告)号：US09602057B1

公开(公告)日：2017-03-21

申请号：US14954561

申请日：2015-11-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong Sik Youn ,  Seung Chul Lee ,  Ji Seon Paek ,  Thomas Byunghak Cho

IPC: H03F1/30 ,  H03F1/02 ,  H03F3/193 ,  H03F3/21

CPC classification number: H03F1/0227 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/193 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/421 ,  H03F2200/432 ,  H03F2200/451

Abstract: An apparatus for and method of a supply modulator (SM) for a power amplifier (PA) is provided. The apparatus includes a buck-boost converter, including a supply input connected to a battery voltage (Vbat), and an output; a switch and capacitors module, including a first input connected to the output of the buck-boost converter, and a second input; a buck (dual) converter, including a supply input connected to Vbat, an input connected to the output of the buck-boost converter, and an output connected to the second input of the switch and capacitors module; a linear amplifier (LA), including a supply input connected to the output of the buck-boost converter, an input, and an output connected to the second input of the switch and capacitors module; and the PA, including a supply input connected to the output of the buck (dual converter, an input for receiving a radio frequency (RF) signal, and an output for outputting an RF signal.