公开(公告)号：US20160322940A1

公开(公告)日：2016-11-03

申请号：US15071599

申请日：2016-03-16

Applicant: Samsung Electro-Mechanics Co., Ltd.

Inventor： Kwang Du LEE ,  Ho Kwon YOON ,  Jong Ok HA ,  Kyung Hee HONG ,  Shinichi IIZUKA ,  Jae Hyouck CHOI ,  Suk Chan KANG

IPC: H03F1/02 ,  H03F3/19 ,  H03F3/21

CPC classification number: H03F3/19 ,  H03F1/0272 ,  H03F1/52 ,  H03F3/21 ,  H03F2200/18 ,  H03F2200/411 ,  H03F2200/444 ,  H03F2200/451 ,  H03F2200/462

Abstract: A power amplifier apparatus includes: an amplifier configured to amplify an input signal; a sensing circuit connected to the amplifier and configured to sense a bias of the amplifier; and a biasing circuit connected to the sensing circuit and configured to provide a biasing current to the amplifier, wherein the sensing circuit is configured to change the biasing current based on the bias of the amplifier.

Abstract translation: 功率放大器装置包括：放大器，被配置为放大输入信号; 连接到所述放大器并被配置为感测所述放大器的偏置的感测电路; 以及偏置电路，连接到感测电路并且被配置为向放大器提供偏置电流，其中感测电路被配置为基于放大器的偏置来改变偏置电流。

公开(公告)号：US20150188600A1

公开(公告)日：2015-07-02

申请号：US14258850

申请日：2014-04-22

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Suk Chan KANG ,  Ho Kwon YOON ,  Jeong Hoon KIM ,  Joong Jin NAM ,  Kyu Jin CHOI ,  Kwang Du LEE ,  Jae Hyouck CHOI ,  Kyung Hee HONG

IPC: H04B1/44 ,  H03K17/687

CPC classification number: H04B1/44 ,  H03K17/687

Abstract: A switching circuit may include: the switching circuit includes a switching circuit unit including a first transistor and a second transistor connected to each other in series, the second transistor receiving a first control signal through a control terminal thereof, and an inverter connected between a control terminal of the first transistor and a first terminal of the first transistor. The inverter receives a second control signal and maintains a gate-source voltage level of the first transistor to a threshold voltage level of the first transistor or less, and levels of the first and second control signals are logically complementary to each other.

Abstract translation: 开关电路可以包括：开关电路包括开关电路单元，其包括串联连接的第一晶体管和第二晶体管，第二晶体管通过其控制端接收第一控制信号，以及逆变器，其连接在控制 第一晶体管的端子和第一晶体管的第一端子。 逆变器接收第二控制信号，并将第一晶体管的栅极 - 源极电压电平维持在第一晶体管的阈值电压以下，第一和第二控制信号的电平在逻辑上彼此互补。

公开(公告)号：US20150145606A1

公开(公告)日：2015-05-28

申请号：US14273265

申请日：2014-05-08

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Kwang Du LEE ,  Jeong Hoon KIM ,  Ho Kwon YOON ,  Joong Jin NAM ,  Kyu Jin CHOI ,  Suk Chan KANG ,  Jae Hyouck CHOI ,  Kyung Hee HONG

IPC: H03F1/02 ,  H03F3/19 ,  H03F3/21

CPC classification number: H03F1/0266 ,  H03F3/193 ,  H03F3/211 ,  H03F2200/102 ,  H03F2200/18 ,  H03F2200/451 ,  H03F2203/21131

Abstract: A power amplifier may include a first amplifying unit receiving a first bias signal to amplify a power level of an input signal; an envelope detecting unit detecting an envelope of the input signal; a comparing circuit unit comparing a peak value of the detected envelope with a preset reference voltage; and a second amplifying unit amplifying the power level of the input signal according to a second bias signal set depending on a comparison result of the comparing circuit unit.

Abstract translation: 功率放大器可以包括：第一放大单元，接收第一偏置信号以放大输入信号的功率电平; 检测输入信号的包络的包络检测单元; 比较电路单元，将检测到的包络的峰值与预设的参考电压进行比较; 以及第二放大单元，根据比较电路单元的比较结果，根据设定的第二偏置信号来放大输入信号的功率电平。