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1.发明授权Control circuit for automatically controlled feed forward nonlinear distortion compensation amplifier 失效用于自动控制前馈非线性失真补偿放大器的控制电路
公开(公告)号：US5327096A
公开(公告)日：1994-07-05
申请号：US16244
申请日：1993-02-11
申请人： Hironori Sakamoto , Akira Ito , Toshio Nojima
发明人： Hironori Sakamoto , Akira Ito , Toshio Nojima
CPC分类号： H03F1/3229 , H03F2201/3212
摘要： A control circuit for an automatically controlled feed forward nonlinear distortion compensation amplifier. The control circuit controls a distortion detection loop and a distortion removal loop. The distortion detection loop is a loop for feeding forward input to a main amplifier into a first directional coupler. The distortion removal loop is a loop for feeding forward distortion elements into a second directional coupler. The main amplifier is preceded by a variable attenuator and a variable phase shifter. A variable attenuator and a variable phase shifter are also located in a feed forward path to the second directional coupler. The control circuit controls the variable attenuator and the variable phase shifter preceding the main amplifier for detecting the distortion elements. The control circuit controls the variable attenuator and the variable phase shifter located in the feed forward path to the second directional coupler for removing the distortion elements. A temperature compensation signal and an adjustment signal are added to a control signal by each adder provided at the output stage of the control circuit.
摘要翻译： 一种用于自动控制前馈非线性失真补偿放大器的控制电路。 控制电路控制失真检测环路和失真消除环路。 失真检测环路是用于将主放大器的正向输入馈送到第一定向耦合器的环路。 失真去除环路是用于将前向失真元件馈送到第二定向耦合器的环路。 主放大器之前有可变衰减器和可变移相器。 可变衰减器和可变移相器也位于到第二定向耦合器的前馈路径中。 控制电路控制主放大器之前的可变衰减器和可变移相器，用于检测失真元件。 控制电路控制可变衰减器和位于到第二定向耦合器的前馈路径中的可变移相器以去除失真元件。 通过设置在控制电路的输出级的每个加法器将温度补偿信号和调整信号加到控制信号上。
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公开(公告)号：US5363072A
公开(公告)日：1994-11-08
申请号：US965171
申请日：1992-10-23
申请人： Hironori Sakamoto , Akira Ito , Toshio Nojima
发明人： Hironori Sakamoto , Akira Ito , Toshio Nojima
摘要： In a power amplifying apparatus which has a high-frequency power divider and combiner and two to four parallel-operated power amplifiers, in which a change is made in the number of the parallel-operated power amplifiers so as to adjust output power, there are provided a power dividing circuit D.sub.1 having a transmission line Wd.sub.51 serving as an impedance transformer set in such a manner that the power loss is minimized by assigning an intermediate number 3 between 2 and 4 both of which indicate the number of divisions, and having four output terminals, and a power combining circuit S.sub.1 having a transmission line Ws.sub.51 serving as an impedance transformer set in such a manner that the power loss is minimized by assigning the intermediate number 3 indicative of the number of combinations, and having four input terminals.
摘要翻译： 在具有高频功率分配器和组合器的功率放大装置和两到四个并联操作的功率放大器中，其中并行操作的功率放大器的数量改变以便调节输出功率， 提供了一种功率分配电路D1，其具有用作阻抗变换器的传输线Wd51，以使得功率损耗最小化的方式，通过分配两个表示分割数的2和4之间的中间数3，并且具有四个输出 端子，以及具有用作阻抗变换器的传输线Ws51的功率组合电路S1，以通过分配表示组合数的中间数3并具有四个输入端的方式使功率损耗最小化。
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3.发明授权
公开(公告)号：US5412342A
公开(公告)日：1995-05-02
申请号：US4466
申请日：1993-01-14
申请人： Hironori Sakamoto , Akira Ito , Toshio Nojima
发明人： Hironori Sakamoto , Akira Ito , Toshio Nojima
CPC分类号： H03F1/3229 , H03F3/602 , H03F2201/3218
摘要： For supply to first and second feedforward distortion compensating circuits 33(1), 33(2) connected in parallel, a two-divider 31 divides into signals of a common phase and a common amplitude an input or composite radio frequency signal supplied to an input terminal 11. The composite radio frequency signal collectively has a plurality of radio frequency signals of different frequencies. A two-combiner 35 combines component outputs of the feedforward circuits in inphase as an amplified output signal which is supplied to an output terminal 13. In general, N feedforward circuits (N being an integer not less than two) are connected in parallel and are supplied with the input radio frequency signal through an N-divider. Component outputs of the feedforward circuits are combined in inphase as the output signal by an N-combiner. Alternatively, the input radio frequency signal is divided into signals of a predetermined phase difference and of a common amplitude by the N-divider. In this case, the component outputs of the feedforward circuits are combined in a phase of cancelling the predetermined phase difference by the N-combiner.
摘要翻译： 为了供应到并联连接的第一和第二前馈失真补偿电路33（1），33（2），二分频器31将提供给输入端的输入或复合射频信号分为公共相位和公共振幅信号 复合射频信号共同具有不同频率的多个射频信号。 双组合器35将前馈电路的分量输出同相作为被提供给输出端子13的放大输出信号。通常，N个前馈电路（N是不小于2的整数）并联连接， 通过N分频器提供输入射频信号。 前馈电路的分量输出由N组合器同相作为输出信号组合。 或者，输入射频信号被N分频器分成预定相位差和公共振幅的信号。 在这种情况下，前馈电路的分量输出以N组合器消除预定相位差的相位组合。
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公开(公告)号：US5394120A
公开(公告)日：1995-02-28
申请号：US217878
申请日：1994-03-25
申请人： Hironori Sakamoto , Akira Ito , Masaaki Fujiwara , Toshio Nojima
发明人： Hironori Sakamoto , Akira Ito , Masaaki Fujiwara , Toshio Nojima
CPC分类号： G01R31/2825 , H03F1/3229
摘要： A device for testing an amplifier. A plurality of PN modulators are provided corresponding to a plurality of oscillators at stages preceding or following them, or fluctuation is given to division ratios at the oscillators. Since each of n carriers combined by a combiner contains phase fluctuation, the possibility that the peaks will overlap each other or that the carriers having opposite phases will negate each other is very low. The peak power in signals supplied to the amplifier to be tested is unlikely to vary, enabling accurate evaluation or testing.
摘要翻译： 用于测试放大器的设备。 在它们之前或之后的阶段对应于多个振荡器提供多个PN调制器，或者在振荡器处给出分频比的波动。 由于由组合器组合的n个载波中的每一个包含相位波动，所以峰将彼此重叠或者具有相反相位的载波彼此否定的可能性非常低。 提供给待测放大器的信号的峰值功率不太可能发生变化，从而能够进行准确的评估或测试。
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公开(公告)号：US5313657A
公开(公告)日：1994-05-17
申请号：US964669
申请日：1992-10-22
摘要： In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation signal and a filtered receiver signal of the receiver filter to form a coupled signal. A low noise amplifier (13) amplifies the coupled signal into an amplified signal which comprises an amplified receiver signal component derived from the filtered receiver signal and an amplified pilot oscillation signal component derived from the pilot oscillation signal. A branching filter (27) branches the amplified signal into the amplified receiver signal component and the amplified pilot oscillation signal. A pilot signal component detector unit (28) detects the amplified pilot oscillation signal component to produce a direct pilot signal. A failure monitoring unit (29) monitors the direct pilot signal to produce a fault signal when the direct pilot signal is found faulty.
摘要翻译： 在包括具有频率衰减频带的接收机滤波器（12）和用于在频率衰减频带中产生具有导频的导频振荡信号的导频振荡器（25）的接收机中，耦合器（26）将导频振荡信号和 滤波的接收机滤波器的接收器信号以形成耦合信号。 低噪声放大器（13）将耦合信号放大为放大信号，该放大信号包括从经滤波的接收机信号导出的放大的接收机信号分量和从导频振荡信号导出的放大的导频振荡信号分量。 分路滤波器（27）将放大的信号分支为放大的接收机信号分量和放大的导频振荡信号。 导频信号分量检测器单元（28）检测放大的导频振荡信号分量以产生直接导频信号。 当发现直接导频信号有故障时，故障监视单元（29）监视直接导频信号以产生故障信号。
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公开(公告)号：US08035444B2
公开(公告)日：2011-10-11
申请号：US12615687
申请日：2009-11-10
申请人： Yoichi Okubo , Manabu Nakamura , Yasuhiro Takeda , Taizo Ito , Junya Dosaka , Terufumi Nagano , Hidekatsu Ueno , Toshio Nojima
发明人： Yoichi Okubo , Manabu Nakamura , Yasuhiro Takeda , Taizo Ito , Junya Dosaka , Terufumi Nagano , Hidekatsu Ueno , Toshio Nojima
IPC分类号： H03F3/68
CPC分类号： H03F1/0288
摘要： An amplifier capable of lowering an electrical current flowing in a peak amplifier before a carrier amplifier becomes saturated to thereby improve the efficiency of an entirety of the amplifier is provided. The amplifier includes a carrier amplifier circuit having an amplifying element operable in class-AB or class-B, and a plurality of peak amplifier circuits which have amplifying elements operating in class-B or class-C and which are arranged to start an operation in stages in response to an input level. An output of the carrier amplifier circuit and outputs of the peak amplifier circuits are combined together for signal output. One of the peak amplifier circuits which is rendered operative at the lowest input level is smaller in saturation output than the carrier amplifier circuit.
摘要翻译： 提供一种放大器，其能够在载波放大器饱和之前降低在峰值放大器中流动的电流，从而提高整个放大器的效率。 放大器包括具有可在AB类或B类中工作的放大元件的载波放大器电路和具有在B类或C类中工作的放大元件的多个峰值放大器电路， 响应输入级别的阶段。 载波放大器电路的输出和峰值放大器电路的输出被组合在一起用于信号输出。 在最低输入电平下工作的峰值放大器电路中的一个在饱和输出中比载波放大器电路小。
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公开(公告)号：US07719364B2
公开(公告)日：2010-05-18
申请号：US12379073
申请日：2009-02-12
申请人： Fumitake Kawanabe , Yoichi Okubo , Yasuo Sera , Manabu Nakamura , Toshio Nojima , Taizo Ito
发明人： Fumitake Kawanabe , Yoichi Okubo , Yasuo Sera , Manabu Nakamura , Toshio Nojima , Taizo Ito
IPC分类号： H03F3/04
CPC分类号： H03F3/602 , H03F1/32 , H03F1/56 , H03F2200/222 , H03F2200/387 , H03F2200/451
摘要： A high frequency power amplifier includes an amplifying device for amplifying an input high frequency signal, a harmonic reflection circuit for reflecting a harmonic outputted from the amplifying device, and a harmonic generating circuit provided at an input terminal of the amplifying device, the harmonic generating circuit including a divider for dividing an input signal of a fundamental wave into two parts, a harmonic generator for generating a second harmonic from one part of the fundamental wave signal, and a combiner for combining the second harmonic generated from the harmonic generator with the other part of the fundamental wave signal to offer a combined signal to the amplifying device, wherein the harmonic reflection circuit reflects the second harmonic.
摘要翻译： 高频功率放大器包括用于放大输入高频信号的放大装置，用于反射从放大装置输出的谐波的谐波反射电路，以及设置在放大装置的输入端的谐波发生电路，谐波发生电路 包括用于将基波的输入信号分成两部分的分频器，用于从基波信号的一部分产生二次谐波的谐波发生器和用于将从谐波发生器产生的二次谐波与其他部分组合的组合器 的基波信号，以向放大装置提供组合信号，其中谐波反射电路反映第二谐波。
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公开(公告)号：US20090201089A1
公开(公告)日：2009-08-13
申请号：US12379073
申请日：2009-02-12
申请人： Fumitake Kawanabe , Yoichi Okubo , Yasuo Sera , Manabu Nakamura , Toshio Nojima , Taizo Ito
发明人： Fumitake Kawanabe , Yoichi Okubo , Yasuo Sera , Manabu Nakamura , Toshio Nojima , Taizo Ito
IPC分类号： H03F3/16
CPC分类号： H03F3/602 , H03F1/32 , H03F1/56 , H03F2200/222 , H03F2200/387 , H03F2200/451
摘要： A high frequency power amplifier includes an amplifying device for amplifying an input high frequency signal, a harmonic reflection circuit for reflecting a harmonic outputted from the amplifying device, and a harmonic generating circuit provided at an input terminal of the amplifying device, the harmonic generating circuit including a divider for dividing an input signal of a fundamental wave into two parts, a harmonic generator for generating a second harmonic from one part of the fundamental wave signal, and a combiner for combining the second harmonic generated from the harmonic generator with the other part of the fundamental wave signal to offer a combined signal to the amplifying device, wherein the harmonic reflection circuit reflects the second harmonic.
摘要翻译： 高频功率放大器包括用于放大输入高频信号的放大装置，用于反射从放大装置输出的谐波的谐波反射电路，以及设置在放大装置的输入端的谐波发生电路，谐波发生电路 包括用于将基波的输入信号分成两部分的分频器，用于从基波信号的一部分产生二次谐波的谐波发生器和用于将从谐波发生器产生的二次谐波与其他部分组合的组合器 的基波信号，以向放大装置提供组合信号，其中谐波反射电路反映第二谐波。
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公开(公告)号：US07327996B2
公开(公告)日：2008-02-05
申请号：US10725002
申请日：2003-12-02
申请人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
发明人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
IPC分类号： H04B1/10
摘要： The invention relates to a high sensitivity receiver installed outdoors which may be used in a base station of a mobile communication system, for example. A received radio frequency signal is converted into a signal in a desired frequency band by a reception bandpass filter RXF3, is subject to a low noise amplification to a desired level by a low noise reception amplifier LNA4, and the amplified signal is converted into an optical signal by a laser diode LD5. RXF3, LNA4 and LD5 are confined in a heat shielding box. LD5 is cooled by cooling means to the order of critical temperature where RXF3, for example, assumes a superconducting state, whereby the dynamic range is increased and stabilized.
摘要翻译： 本发明涉及一种安装在户外的高灵敏度接收机，其可以在例如移动通信系统的基站中使用。 接收的射频信号由接收带通滤波器RXF 3转换成期望频带的信号，由低噪声接收放大器LNA4进行低噪声放大到期望的电平，并将放大的信号转换为 由激光二极管LD5的光信号。 RXF 3，LNA 4和LD 5被限制在隔热箱中。 LD 5通过冷却装置冷却至临界温度的顺序，其中RXF 3例如呈现超导状态，从而动态范围增加并稳定。
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10.发明授权Radio communication method and apparatus for multiplex transmission of plural signals in the same frequency band 有权用于在相同频带中多路传输多个信号的无线电通信方法和装置公开(公告)号：US07227906B2
公开(公告)日：2007-06-05
申请号：US10315993
申请日：2002-12-11
IPC分类号： H04L1/02
CPC分类号： H04B7/12 , H04B7/0613 , H04B7/0842 , H04L5/06
摘要： Different carrier frequencies are chosen for plural transmitters of a transmitting device and signals are transmitted at frequency bands overlapping each other. In the receiving device weighting coefficients are provided in input-to-output paths of an interchannel interference canceller 21 so that the cross correlation between output signals from the interchannel interference canceller is minimized.
摘要翻译： 为发射装置的多个发射机选择不同的载波频率，并且以彼此重叠的频带发射信号。 在接收设备中，加权系数被提供在通道间干扰消除器21的输入到输出路径中，使得来自通道间干扰消除器的输出信号之间的互相关被最小化。
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