公开(公告)号：US20200304071A1

公开(公告)日：2020-09-24

申请号：US16898156

申请日：2020-06-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoshi Tanaka ,  Masatoshi HASE ,  Norio HAYASHI ,  Kazuo WATANABE ,  Yuuri HONDA

IPC: H03F1/02 ,  H03F3/21 ,  H03F1/56 ,  H03F3/19 ,  H03F3/24 ,  H03F3/195

Abstract: A power amplifier circuit includes an amplifier that receives an input signal with an alternating current and outputs an output signal obtained by amplifying power of the input signal to a first node; an inductive element that is connected between the first node and a second node; and a variable capacitor that is connected between the second node and a reference potential, and whose electrostatic capacitance increases as power of the output signal increases.

公开(公告)号：US20140015568A1

公开(公告)日：2014-01-16

申请号：US14026076

申请日：2013-09-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yusuke SHIMAMUNE ,  Yasunobu YOSHIZAKI ,  Norio HAYASHI ,  Takayuki TSUTSUI

IPC: H04W52/52

CPC classification number: H04W52/52 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2203/7209 ,  H03G3/3042

Abstract: In a semiconductor integrated circuit apparatus and a radio-frequency power amplifier module, a log detection portion including multiple-stage amplifier circuits, multiple level detection circuits, adder circuits, and a linear detection portion including a level detection circuit are provided. Output current from the log detection portion and output current from the linear detection portion are multiplied by different coefficients and the results of the multiplication are added to each other to realize the multiple detection methods. For example, current resulting from multiplication of the output current from the log detection portion by ×6/5 is added to the output current from the linear detection portion to realize a log detection method and, current resulting from multiplication of the output current from the log detection portion by ×1/5 is added to current resulting from multiplication of the output current from the linear detection portion by ×3 to realize a log-linear detection method.

Abstract translation: 在半导体集成电路装置和射频功率放大器模块中，提供包括多级放大器电路，多电平检测电路，加法器电路和包括电平检测电路的线性检测部分的对数检测部分。 来自对数检测部分的输出电流和来自线性检测部分的输出电流乘以不同的系数，并且相乘的结果相加以实现多种检测方法。 例如，将从日志检测部分的输出电流乘以×6/5产生的电流被加到来自线性检测部分的输出电流中，以实现对数检测方法，并且由与来自 将来自线性检测部分的输出电流乘以×3的电流加上×1/5的对数检测部分，以实现对数线性检测方法。