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45 条记录 (耗时 0.033 秒)

    High frequency power amplifier
    31.
    发明授权
    High frequency power amplifier 失效
    高频功率放大器

    公开(公告)号：US06566956B2

    公开(公告)日：2003-05-20

    申请号：US09810547

    申请日：2001-03-19

    申请人： Masami Ohnishi ,  Akira Maeki

    发明人： Masami Ohnishi ,  Akira Maeki

    IPC分类号： H03F368

    CPC分类号： H03F3/607 ,  H03F2200/372

    摘要： A high frequency power amplifier is provided that prevents loop oscillation at a low frequency caused by a closed loop formed between combined semiconductor devices. Previously, coupled-line directional couplers or capacitors for low frequency rejection have been used to prevent the closed loop from being formed. Also, a circuit including a resistance component required for attenuating self-oscillation has been provided. Therefore, to prevent both loop oscillation and self oscillation, two circuits have been required. Accordingly, a high frequency power amplifier is provided with a low frequency prevention circuit that attenuates the passing of each frequency of loop oscillation and self oscillation to each signal line divided by a power divider. Thus, the two circuits respectively required for preventing the loop oscillation and self oscillation of a travelling wave combine type amplifier can be formed by one low frequency prevention circuit.

    摘要翻译： 提供了一种高频功率放大器，其防止由组合的半导体器件之间形成的闭环引起的低频环路振荡。 以前，已经使用用于低频抑制的耦合线路定向耦合器或电容器来防止形成闭环。 此外，还提供了包括衰减自振荡所需的电阻分量的电路。 因此，为了防止环路振荡和自振荡，需要两个电路。 因此，高频功率放大器设置有低频防止电路，其衰减每个由功率分配器划分的信号线的环路振荡和自振荡的每个频率的通过。 因此，可以通过一个低频防止电路来形成分别用于防止行波组合放大器的环路振荡和自振荡所需的两个电路。

    Antenna for radio apparatus
    32.
    发明授权
    Antenna for radio apparatus 失效
    无线电设备天线

    公开(公告)号：US5298910A

    公开(公告)日：1994-03-29

    申请号：US834350

    申请日：1992-02-12

    申请人： Ken Takei ,  Masami Ohnishi

    发明人： Ken Takei ,  Masami Ohnishi

    IPC分类号： H01Q1/36 ,  H01Q11/08

    CPC分类号： H01Q1/362

    摘要： An antenna for radio apparatus comprises a first conductor taking a helical form, a second conductor which extends to and fro in sequence substantially in a direction of the center axis of the helical form of the first conductor to take, as a whole, a meandering form which is spaced apart from the first conductor and surrounds the center axis, and a dielectric member which lies at least between the first and second conductors. A portion of the first conductor is electrically connected to a portion of the second conductor, and either a portion of the first conductor or a portion of the second conductor acts as a feeding point.

    摘要翻译： 用于无线电设备的天线包括采用螺旋形式的第一导体，基本上沿着第一导体的螺旋形式的中心轴线的方向依次延伸的第二导体，从而总体上采用曲折形式 其与第一导体间隔开并且围绕中心轴线，以及至少位于第一和第二导体之间的电介质构件。 第一导体的一部分电连接到第二导体的一部分，第一导体的一部分或第二导体的一部分用作馈电点。

    High-frequency power amplifier
    33.
    发明授权
    High-frequency power amplifier 失效
    高频功率放大器

    公开(公告)号：US5274341A

    公开(公告)日：1993-12-28

    申请号：US914408

    申请日：1992-07-17

    申请人： Kenji Sekine ,  Masami Ohnishi ,  Haruhiko Funaki ,  Nobuo Masuda ,  Akio Iso

    发明人： Kenji Sekine ,  Masami Ohnishi ,  Haruhiko Funaki ,  Nobuo Masuda ,  Akio Iso

    IPC分类号： H03F1/02 ,  H03F3/26 ,  H03F3/60

    CPC分类号： H03F3/604

    摘要： A high-frequency power amplifier comprises a pair of FETs, a divider which supplies opposite-phase versions of a signal to be amplified to the FETs, distributed-parameter transmission lines connected respectively at one ends thereof to output electrodes of the FETs, and a combiner which combines signals appearing at another ends of the transmission lines into a signal of a common phase. Stubs which short-circuit for even harmonics included in output signals of the FETs are connected respectively to the transmission lines at positions distant from the output electrodes of the FETs by a multiple of a quarter wavelength of the fundamental wave included in the output signals of the FETs. A first capacitor is connected between the transmission lines at positions distant from the output electrodes of the FETs by the 1/12 wavelength of the fundamental wave included in the output signals of the FETs so that the output electrodes of the FETs are open for the third harmonic, and a second capacitor is connected between the transmission lines at positions between the connecting positions of the first capacitor and the connecting positions of the stubs so as to perform impedance matching for the fundamental wave included in the output signals of the FETs.

    摘要翻译： 一个高频功率放大器包括一对FET，一个分频器，提供反向相位版本的要放大的信号到FET，一端分别连接到FET的输出电极的分布参数传输线，以及一个 组合器，其将出现在传输线的另一端的信号组合成公共相位的信号。 将包含在FET的输出信号中的偶次谐波短路的短截线分别连接到远离FET的输出电极的位置处的传输线，该基波包括在基本波的输出信号中的基波的四分之一波长的倍数 FET。 第一电容器连接在远离FET的输出电极的位置处的传输线之间，包括在FET的输出信号中的基波的1/12波长，使得FET的输出电极为第三个 谐波和第二电容器连接在第一电容器的连接位置和短截线的连接位置之间的位置处的传输线之间，以便对包括在FET的输出信号中的基波进行阻抗匹配。

    RADIO TRANSMITTER AND ENVELOPE TRACKING POWER SUPPLY CONTROL METHOD
    34.
    发明申请
    RADIO TRANSMITTER AND ENVELOPE TRACKING POWER SUPPLY CONTROL METHOD 失效
    无线电发射机和信号跟踪电源控制方法

    公开(公告)号：US20120309333A1

    公开(公告)日：2012-12-06

    申请号：US13477108

    申请日：2012-05-22

    申请人： Hiroi Nambu ,  Masami Ohnishi

    发明人： Hiroi Nambu ,  Masami Ohnishi

    IPC分类号： H04B1/04

    CPC分类号： H04B1/0475 ,  H03F1/3223 ,  H03F3/24 ,  H04B2001/0441

    摘要： The envelope tracking power supply includes a plurality of variable voltage supplies. A power supply controller of a power amplifier controls the plurality of variable voltage supplies so as to precisely divide the power supply voltage in a high frequency area, based on the voltage distribution of a received transmitted base band signal, in order to maximize the power added efficiency of the power amplifier. The power supply controller includes a threshold memory including a plurality of first zones, and a frequency memory including a plurality of second zones. The power supply controller changes the threshold held in the first zones so that each second zone approaches the average of the second zones.

    摘要翻译： 包络跟踪电源包括多个可变电压源。 功率放大器的电源控制器控制多个可变电压源，以便基于所接收的发送的基带信号的电压分布来精确地划分高频区域中的电源电压，以便最大限度地增加功率 功率放大器的效率。 电源控制器包括包括多个第一区域的阈值存储器和包括多个第二区域的频率存储器。 电源控制器改变保持在第一区域中的阈值，使得每个第二区域接近第二区域的平均值。

    RF amplifying device
    35.
    发明授权
    RF amplifying device 有权
    射频放大装置

    公开(公告)号：US07825731B2

    公开(公告)日：2010-11-02

    申请号：US12192240

    申请日：2008-08-15

    申请人： Masami Ohnishi ,  Ryouichi Tanaka

    发明人： Masami Ohnishi ,  Ryouichi Tanaka

    IPC分类号： H03F3/213

    CPC分类号： H03F1/565 ,  H03F3/602 ,  H03F2200/111 ,  H03F2200/423 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2200/541

    摘要： An RF amplifying device includes a transmission line transformer coupled to an output electrode of a power transistor for generating transmission power to be fed to an antenna. The transmission power from the output electrode of the power transistor is fed to one end of a main line of the transmission line transformer, and one end of a secondary line of the transmission line transformer is coupled to an AC grounding node. The other end of the secondary line is coupled to the one end of the main line, thereby generating the transmission power. Coupling energy is transmitted from the secondary line to the main line. Coupling members electrically coupled to the output electrode of the power transistor are electrically coupled to a joint formed in either the main line, or the secondary line, at part of the energy coupling part.

    摘要翻译： RF放大装置包括耦合到功率晶体管的输出电极的传输线变压器，用于产生馈送到天线的发射功率。 来自功率晶体管的输出电极的发送功率被馈送到传输线变压器的主线的一端，并且传输线变压器的次级线的一端耦合到AC接地节点。 二次线的另一端耦合到主线的一端，从而产生发射功率。 耦合能量从次级线传输到主线。 电耦合到功率晶体管的输出电极的耦合部件在能量耦合部分的一部分处电耦合到形成在主线或次级线中的接头。

    High frequency power amplifier
    36.
    发明授权
    High frequency power amplifier 失效
    高频功率放大器

    公开(公告)号：US07482875B2

    公开(公告)日：2009-01-27

    申请号：US11209691

    申请日：2005-08-24

    申请人： Tomonori Tanoue ,  Masami Ohnishi

    发明人： Tomonori Tanoue ,  Masami Ohnishi

    IPC分类号： H03F3/04

    CPC分类号： H03F1/26 ,  H01L2924/0002 ,  H03F1/42 ,  H03F3/04 ,  H03F3/195 ,  H03F2200/36 ,  H01L2924/00

    摘要： The invention provides a wide-band, low-noise, and small-sized high frequency power amplifier that has small temperature dependence of the gain and is excellent in input matching. A parallel circuit consisting of a resistor whose resistance depends strongly on temperature and a conventional resistor is inserted serially into a signal path in an input matching circuit of an amplification unit, and resistances of the resistors are set to appropriate values, for example, about 2/3 times an input impedance of the amplification unit.

    摘要翻译： 本发明提供了宽带，低噪声，小尺寸的高频功率放大器，其具有较小的增益温度依赖性，输入匹配性优异。 由电阻强烈依赖于温度的电阻和常规电阻构成的并联电路串联插入到放大单元的输入匹配电路中的信号路径中，并且电阻器的电阻被设置为适当的值，例如约2 / 3倍于放大单元的输入阻抗。

    High-frequency amplifier, and high-frequency module and wireless transceiver using same
    38.
    发明授权
    High-frequency amplifier, and high-frequency module and wireless transceiver using same 有权
    高频放大器，高频模块和无线收发器使用相同

    公开(公告)号：US09106184B2

    公开(公告)日：2015-08-11

    申请号：US13884958

    申请日：2011-08-31

    申请人： Masami Ohnishi

    发明人： Masami Ohnishi

    IPC分类号： H03G3/20 ,  H03F3/193 ,  H03F1/02 ,  H03F3/24

    CPC分类号： H03F3/193 ,  H03F1/0266 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/27 ,  H03F2200/435 ,  H03F2200/511 ,  H03F2200/555 ,  H03F2200/78

    摘要： There are provided a high-frequency amplifier and a high-frequency module having a high efficiency for an extensive input modulated signal power, and base station/mobile wireless machines using the amplifier or the module.The high-frequency amplifier includes a circuit that detects an envelope of an input modulated signal; a control signal generator circuit (a voltage controlled circuit or a current controlled circuit) that can change a voltage or a current according to a given function on the basis of a magnitude of the detected envelope signal; and a diode clamped variable power circuit that connects a plurality of diode clamped circuits each including a diode, a transistor, and a DC power supply to one another.

    摘要翻译： 为广泛的输入调制信号功率提供了高效率的高频放大器和高频模块，以及使用放大器或模块的基站/移动无线机器。 高频放大器包括检测输入调制信号的包络的电路; 控制信号发生器电路（电压控制电路或电流控制电路），其可以根据检测到的包络信号的大小根据给定功能改变电压或电流; 以及二极管钳位的可变电源电路，其将包括二极管，晶体管和DC电源的多个二极管钳位电路彼此连接。

    HIGH-FREQUENCY AMPLIFIER, AND HIGH-FREQUENCY MODULE AND WIRELESS TRANSCEIVER USING SAME
    39.
    发明申请
    HIGH-FREQUENCY AMPLIFIER, AND HIGH-FREQUENCY MODULE AND WIRELESS TRANSCEIVER USING SAME 有权
    高频放大器，高频模块和无线收发器

    公开(公告)号：US20130229235A1

    公开(公告)日：2013-09-05

    申请号：US13884958

    申请日：2011-08-31

    申请人： Masami Ohnishi

    发明人： Masami Ohnishi

    IPC分类号： H03F3/193

    CPC分类号： H03F3/193 ,  H03F1/0266 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/27 ,  H03F2200/435 ,  H03F2200/511 ,  H03F2200/555 ,  H03F2200/78

    摘要： There are provided a high-frequency amplifier and a high-frequency module having a high efficiency for an extensive input modulated signal power, and base station/mobile wireless machines using the amplifier or the module.The high-frequency amplifier includes a circuit that detects an envelope of an input modulated signal; a control signal generator circuit (a voltage controlled circuit or a current controlled circuit) that can change a voltage or a current according to a given function on the basis of a magnitude of the detected envelope signal; and a diode clamped variable power circuit that connects a plurality of diode clamped circuits each including a diode, a transistor, and a DC power supply to one another.

    摘要翻译： 为广泛的输入调制信号功率提供了高效率的高频放大器和高频模块，以及使用放大器或模块的基站/移动无线机器。 高频放大器包括检测输入调制信号的包络的电路; 控制信号发生器电路（电压控制电路或电流控制电路），其可以根据检测到的包络信号的大小根据给定功能改变电压或电流; 以及二极管钳位的可变电源电路，其将包括二极管，晶体管和DC电源的多个二极管钳位电路彼此连接。