-
公开(公告)号：US20150130537A1
公开(公告)日：2015-05-14
申请号：US14520467
申请日：2014-10-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hayato Nakamura , Mitsuo Ariie , Tadashi Matsuoka , Tsutomu Onaro
CPC classification number: H03G3/3047 , H03F1/0261 , H03F1/22 , H03F3/195 , H03F3/211 , H03F2200/144 , H03F2200/153 , H03F2200/18 , H03F2200/408 , H03F2200/451 , H03F2203/21112 , H03F2203/45138 , H03F2203/45528 , H03G1/0029
Abstract: Disclosed is a power amplification module which has a comparatively small size and is capable of adjusting the rising characteristic of a gain. The power amplification module includes a first gain control current generation circuit which generates a first gain control current changing with a control voltage, a first bias current generation circuit which generates a first bias current according to the first gain control current, a gain control voltage generation circuit which generates a gain control voltage changing with the control voltage, a first transistor which is emitter-grounded and in which an input signal and the first bias current are supplied to a base thereof, and a second transistor which is cascode-connected to the first transistor and in which the gain control voltage is supplied to a base thereof and a first output signal obtained by amplifying the input signal is output from a collector thereof.
Abstract translation: 公开了一种功率放大模块，其具有相对较小的尺寸并且能够调节增益的上升特性。 功率放大模块包括：第一增益控制电流产生电路，其产生以控制电压变化的第一增益控制电流;第一偏置电流产生电路，其根据第一增益控制电流产生第一偏置电流;增益控制电压产生 电路，其产生随着控制电压而变化的增益控制电压;发射极接地的第一晶体管，其输入信号和第一偏置电流被提供给其基极;第二晶体管，其与 第一晶体管，并且其增益控制电压被提供给其基极，并且通过放大输入信号获得的第一输出信号从其集电极输出。
-
公开(公告)号：US20150035607A1
公开(公告)日：2015-02-05
申请号：US14327779
申请日：2014-07-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
Abstract translation: 在采用包络跟踪系统的功率放大器模块中，以低成本实现线性度的改善。 功率放大器模块包括：放大射频信号并输出第一放大信号的第一功率放大器电路;第二功率放大器电路，其根据根据射频幅度变化的源电压放大第一放大信号 信号，并且输出第二放大信号，以及匹配电路，其包括串联连接在第一和第二功率放大器电路之间的第一和第二电容器以及连接在第一和第二电容器之间的节点与地之间的电感器， 随着第二功率放大器电路的源极电压的增加，第一功率放大器电路的增益增加。
-
Patent Agency Ranking
公开(公告)号：US12095489B2
公开(公告)日：2024-09-17
申请号：US18159193
申请日：2023-01-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Motoji Tsuda , Hayato Nakamura
CPC classification number: H04B1/0475 , H03F3/245 , H03F2200/165 , H03F2200/451 , H04B2001/0425
Abstract: A high-frequency circuit includes a power amplifier for a communication band A, and a power amplifier for a communication band B. Transmission in the communication band A, transmission in the communication band B, and reception in the communication band C can be simultaneously used. A frequency range of intermodulation distortion generated between a second harmonic wave of a transmission signal of the communication band A and a fundamental wave of a transmission signal of the communication band B, overlaps with at least part of a reception band of the communication band C. The power amplifier includes amplifying elements and an output trans including coils. One end of the coil is connected with an output of the amplifying element, the other end of the coil is connected with an output of the amplifying element, and one end of the coil is connected with an output terminal of the power amplifier.
-
公开(公告)号：US09882533B2
公开(公告)日：2018-01-30
申请号：US15274539
申请日：2016-09-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yusuke Shimamune , Satoshi Tanaka , Takayuki Tsutsui , Hayato Nakamura , Kazuhito Nakai , Fuminori Morisawa
CPC classification number: H03F1/0222 , G05F3/262 , H03F1/301 , H03F1/302 , H03F3/04 , H03F3/191 , H03F3/193 , H03F3/21 , H03F2200/18 , H03F2200/451
Abstract: Provided is a current output circuit that includes: a first FET that has a power supply voltage supplied to a source thereof, that has a first voltage supplied to a gate thereof and that outputs a first current from a drain thereof; a second FET that has the power supply voltage supplied to a source thereof, that has the first voltage supplied to a gate thereof and that outputs an output current from a drain thereof; a first control circuit that controls the first voltage such that the first current comes to be at a target level; and a second control circuit that performs control such that a drain voltage of the first FET and a drain voltage of the second FET are made equal to each other.
-
公开(公告)号：US20170047894A1
公开(公告)日：2017-02-16
申请号：US15251031
申请日：2016-08-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
Abstract translation: 在采用包络跟踪系统的功率放大器模块中，以低成本实现线性度的改善。 功率放大器模块包括：放大射频信号并输出第一放大信号的第一功率放大器电路;第二功率放大器电路，其根据根据射频幅度变化的源电压放大第一放大信号 信号，并且输出第二放大信号，以及匹配电路，其包括串联连接在第一和第二功率放大器电路之间的第一和第二电容器以及连接在第一和第二电容器之间的节点与地之间的电感器， 随着第二功率放大器电路的源极电压的增加，第一功率放大器电路的增益增加。
-
公开(公告)号：US09461602B2
公开(公告)日：2016-10-04
申请号：US14327779
申请日：2014-07-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
Abstract translation: 在采用包络跟踪系统的功率放大器模块中，以低成本实现线性度的改善。 功率放大器模块包括：放大射频信号并输出第一放大信号的第一功率放大器电路;第二功率放大器电路，其根据根据射频幅度变化的源电压放大第一放大信号 信号，并且输出第二放大信号，以及匹配电路，其包括串联连接在第一和第二功率放大器电路之间的第一和第二电容器以及连接在第一和第二电容器之间的节点与地之间的电感器， 随着第二功率放大器电路的源极电压的增加，第一功率放大器电路的增益增加。
-
公开(公告)号：US09413415B2
公开(公告)日：2016-08-09
申请号：US14366733
申请日：2012-12-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hayato Nakamura , Eigo Tange , Tadashi Matsuoka , Yasushi Shigeno
CPC classification number: H04B1/44 , H04B1/006 , H04B1/0064 , H04B1/0067 , H04W72/0453 , H04W88/02
Abstract: Provided is a high frequency module capable of reducing the IMD. During the transmission/reception operation based on W-CDMA, control signals VSWCC, VTRXCC are output as Hi signals from a control logic. Consequently, transistor T1 is turned ON, and transistors T2, T3 are respectively turned OFF. When the transistor T1 is turned ON, the voltage output from an operational amplifier is output as the signal VVSW to a control terminal, and the control signal VTRXC is output as a Hi signal. The signal VVSW is of a voltage level that is lower than that of the control signal VTRXC. The control signal VTRXC is a signal for turning ON a transistor circuit Q1, and the signal VVSW is a signal for supplying a DC voltage to the antenna potential. It is thereby possible to reduce the ON resistance of the transistor circuit Q1 and improve the IMD characteristics.
Abstract translation: 提供了能够减少IMD的高频模块。 在基于W-CDMA的发送/接收操作期间，控制信号VSWCC，VTRXCC作为Hi信号从控制逻辑输出。 因此，晶体管T1导通，晶体管T2，T3分别断开。 当晶体管T1导通时，从运算放大器输出的电压作为信号VVSW输出到控制端，控制信号VTRXC输出为Hi信号。 信号VVSW具有比控制信号VTRXC低的电压电平。 控制信号VTRXC是用于接通晶体管电路Q1的信号，信号VVSW是向天线电位提供直流电压的信号。 从而可以降低晶体管电路Q1的导通电阻并提高IMD特性。
-
-
-
-
-
-
Search Results
17
records
(took 0.019 seconds)
