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1. 发明授权

US06940346B2 Feedforward amplifier, communication apparatus, feedforward amplification method, program and medium 失效
标题翻译：前馈放大器，通信装置，前馈放大方法，程序和介质
公开(公告)号：US06940346B2
公开(公告)日：2005-09-06
申请号：US10433582
申请日：2001-11-30
申请人： Masayuki Miyaji , Kaoru Ishida , Toshimitsu Matsuyoshi , Hisashi Adachi , Seiji Fujiwara
发明人： Masayuki Miyaji , Kaoru Ishida , Toshimitsu Matsuyoshi , Hisashi Adachi , Seiji Fujiwara
IPC分类号： H03F1/32 , H03F3/66 , H03F1/26
CPC分类号： H03F1/3229
摘要： The conventional feedforward amplifier is unable to suppress distortion components efficiently. The present invention provides a feedforward amplifier wherein the vector adjustor is adjusted so that (1) suppression is performed on only the distortion component generated within a predetermined frequency range out of the range of frequencies to be suppressed in which distortion components to be suppressed occur or (2) the suppression of the distortion component generated within the predetermined frequency range is greater than the suppression of the distortion component generated within the frequency range other than the predetermined frequency range out of the range of frequencies to be suppressed, and the pre-distortion circuit is adjusted so that at least the distortion component generated within the frequency range other than the predetermined frequency range is suppressed.
摘要翻译：传统的前馈放大器不能有效地抑制失真分量。本发明提供一种前馈放大器，其中矢量调节器被调整为使得（1）仅对在要抑制的失真分量发生的待抑制的频率范围内的预定频率范围内产生的失真分量进行抑制，或者（2）在预定频率范围内产生的失真分量的抑制大于在要抑制的频率范围之外的预定频率范围之外的频率范围内产生的失真分量的抑制，并且预失真电路被调整为至少抑制了在预定频率范围之外的频率范围内产生的失真分量。

2. 发明申请

US20050046477A1 Power amplifier 失效
标题翻译：功率放大器
公开(公告)号：US20050046477A1
公开(公告)日：2005-03-03
申请号：US10964762
申请日：2004-10-15
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3247 , H03F2200/102
摘要： A power amplifier capable of compensating for distortion by pre-distortion and achieving a large distortion suppressing effect even if IM3L components and IM3U components occurring at the power amplifier have a large level difference. A power amplifying circuit 117 amplifies an original signal. An envelope detector 119 generates an envelope signal having components identical to envelope components included in the original signal. Based on the original signal a distortion signal generating circuit 112 generates a distortion signal for canceling distortion components occurring while the original signal is amplified by the power amplifying circuit 117. In a power combiner 116, the envelope signal is injected to the original signal, thereby eliminating the asymmetric characteristic of the distortion components. In the power amplifying circuit 117, the distortion signal is injected to the original signal, thereby suppressing the distortion components.
摘要翻译：功率放大器能够通过预失真来补偿失真，并且即使在功率放大器处出现的IM3L分量和IM3U分量具有较大的电平差，也能实现大的失真抑制效果。功率放大电路117放大原始信号。包络检测器119产生具有与包含在原始信号中的包络分量相同的分量的包络信号。基于原始信号，失真信号发生电路112产生用于消除由功率放大电路117放大原始信号时发生的失真分量的失真信号。在功率合成器116中，将包络信号注入原始信号，从而消除了失真分量的不对称特性。在功率放大电路117中，将失真信号注入原始信号，从而抑制失真成分。

3. 发明授权

US06545542B2 Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component 失效
标题翻译：具有用于交叉耦合放大器的耦合器的功率放大器，用于降低差分频率分量
公开(公告)号：US06545542B2
公开(公告)日：2003-04-08
申请号：US09982882
申请日：2001-10-22
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Masayuki Miyaji , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Masayuki Miyaji , Seiji Fujiwara
IPC分类号： H03F304
CPC分类号： H03F1/565 , H03F1/3205 , H03F3/604 , H03F2200/06 , H03F2200/09
摘要： A power amplifier that reduces intermodulation distortion generated by the amplifier while reducing the number of parts is provided. A power amplifier comprises a first balun, to which a combined signal combining two signals of different frequencies is inputted, and which outputs, based on the combined signal, the first and the second signal whose phase are opposite; a first amplifier that outputs the first amplified signal containing the differential frequency component comprising the difference of the frequencies of two signals from the first signal; a second amplifier that outputs the second amplified signal containing the component comprising the difference of the frequencies of two signals from the second signal; and a second balun that outputs the combined signal of the first and the second amplified signals. The component contained in the first and the second amplified signal are inputted via the second and the first amplifier, respectively, to reduce the component.
摘要翻译：提供了减少放大器产生的互调失真同时减少部件数量的功率放大器。功率放大器包括第一平衡 - 不平衡变换器，组合了两个不同频率的信号的组合信号，并且基于组合信号输出相位相反的第一和第二信号; 第一放大器，其输出包含来自第一信号的两个信号的频率差的差分频率分量的第一放大信号; 第二放大器，输出包含来自第二信号的两个信号的频率差的分量的第二放大信号; 以及第二平衡 - 不平衡转换器，其输出第一和第二放大信号的组合信号。分别通过第二放大器和第一放大器输入包含在第一和第二放大信号中的分量以减小分量。

4. 发明授权

US06720829B2 Distortion-compensated amplifying circuit 失效
标题翻译：失真补偿放大电路
公开(公告)号：US06720829B2
公开(公告)日：2004-04-13
申请号：US10323836
申请日：2002-12-20
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F1/3229 , H03F1/3282
摘要： Provided is a distortion-compensated amplifying circuit capable of suppressing distortion without attenuating a level of carrier components, and further obtaining a larger amount of suppression of distortion, which has not been achievable by conventional distortion-compensated amplifying circuit using a pre-distortion technique. A balanced type amplifying circuit is structured such that amplifiers 115 and 116 placed in parallel are sandwiched by 90-degree hybrid circuits 114 and 117. The 90-degree hybrid circuit 114 is supplied with an original signal including carrier components and a distortion signal including distortion equal in amplitude and opposite in phase (having a phase difference of 180 degrees) to distortion that occurs when the original signal is amplified by the amplifiers 115 and 116. The 90-degree hybrid circuit 114 performs a process of differential amplification with a phase difference of 180 degrees between the original signal and the distortion signal. Then, the amplified original signal and distortion signal outputted from the 90-degree hybrid circuit 117 are combined by a directional coupler 118, thereby canceling distortion components included in both signals with each other.
摘要翻译：提供了一种失真补偿放大电路，其能够抑制失真而不衰减载波分量的电平，并且进一步获得更大量的失真抑制，这是使用预失真技术的常规失真补偿放大电路尚未实现的。平衡型放大电路被构造成使得并联放置的放大器115和116被90度混合电路114和117夹持。向90度混合电路114提供包括载波分量的原始信号和包括失真的失真信号在相位差（相位差为180度）上与放大器115和116放大原始信号时发生的失真相反.90度混合电路114进行差分放大处理，具有相位差在原始信号和失真信号之间为180度。然后，由90度混合电路117输出的放大的原始信号和失真信号由定向耦合器118组合，从而消除两个信号中包含的失真分量。

5. 发明授权

US06710652B2 Feedforward amplifier 失效
标题翻译：前馈放大器
公开(公告)号：US06710652B2
公开(公告)日：2004-03-23
申请号：US09961144
申请日：2001-09-21
申请人： Masayuki Miyaji , Kaoru Ishida , Toshimitsu Matsuyoshi , Seiji Fujiwara
发明人： Masayuki Miyaji , Kaoru Ishida , Toshimitsu Matsuyoshi , Seiji Fujiwara
IPC分类号： H03F100
CPC分类号： H03F1/3229 , H03F2201/3218
摘要： A feedforward amplifier includes a first power splitter for dividing an input signal into two paths. The first path, in sequence, includes a first vector adjuster, a main amplifier, a second power splitter and a delay circuit. The second path, in sequence, includes a delay circuit, a distortion detecting power combiner, a second vector adjuster and an error amplifier. The distortion detecting power combiner combines a portion of a signal from the first path with a signal in the second path. Each vector adjuster adjusts amplitude and phase of a signal in each path. A distortion suppression power combiner synthesizes a signal in the first path with a signal in the second path. Control is included for stopping operation of the error amplifier or main amplifier based on a predetermined condition.
摘要翻译：前馈放大器包括用于将输入信号分成两个路径的第一功率分配器。第一路径依次包括第一矢量调节器，主放大器，第二功率分配器和延迟电路。第二路径依次包括延迟电路，失真检测功率组合器，第二矢量调节器和误差放大器。失真检测功率组合器将来自第一路径的信号的一部分与第二路径中的信号组合。每个矢量调节器调整每个路径中信号的幅度和相位。失真抑制功率组合器将第一路径中的信号与第二路径中的信号合成。包括用于基于预定条件停止误差放大器或主放大器的操作的控制。

6. 发明授权

US06507253B1 Delay circuit and feedforward amplifier 有权
标题翻译：延迟电路和前馈放大器
公开(公告)号：US06507253B1
公开(公告)日：2003-01-14
申请号：US09801141
申请日：2001-03-07
申请人： Toshimitsu Matsuyoshi , Toru Matsuura , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Toru Matsuura , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H01P118
CPC分类号： H03H7/30
摘要： A delay circuit in which amplitude characteristic and delay time characteristic of the output signals do not have any ripple relative to the length of the transmission line is provided. The delay circuit includes a circuit that makes a part of signals distributed into two parts by the power divider (103) to be identical in amplitude and inverse in phase relative to the component of signals outputted from the terminal-a directly to the terminal-c of the circulator (104). By composing with the power combiner (107) both signals are offset each other at the output terminal. As a result, only the signals that are inputted from the input terminal (101) and transmitted through the circulator (104) and the open-ended transmission line (105) are outputted to the output terminal (102).
摘要翻译：提供其中输出信号的幅度特性和延迟时间特性相对于传输线的长度没有任何纹波的延迟电路。该延迟电路包括一个电路，其使由功率分配器（103）分成两部分的信号的一部分相对于从终端a直接输出到终端c的信号的分量在幅度上相位相反，的循环器（104）。通过与功率组合器（107）组合，两个信号在输出端子彼此偏移。结果，只有从输入端（101）输入并通过循环器（104）和开路传输线（105）传输的信号才被输出到输出端（102）。

7. 发明授权

US07046972B2 Predistortion linearizer and predistortion distortion compensation method, program, and medium 失效
标题翻译：预失真线性化和预失真失真补偿方法，程序和介质
公开(公告)号：US07046972B2
公开(公告)日：2006-05-16
申请号：US10118704
申请日：2002-04-09
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H04B1/04
CPC分类号： H03F1/3247
摘要： A predistortion linearizer has signal dividing circuit dividing an input signal into two signals; signal adjusting circuit using one of the divided signals to execute predetermined adjustment and outputting a signal based on the adjustment; distortion signal generating circuit generating a distortion signal using the signal output from the signal adjusting circuit; signal synthesizing circuit synthesizing the other of the divided signals with the generated distortion signal; and signal amplifying circuit amplifying the synthesized signal and outputting an output signal, and wherein the signal adjusting circuit executes the predetermined adjustment such that there is a predetermined relationship between the level of a difference between the signal amplitudes of predetermined frequency components contained in a distortion signal and the level of a difference between the signal amplitudes of the predetermined frequency components contained in a distortion signal.
摘要翻译：预失真线性化器具有将输入信号分成两个信号的信号分频电路; 信号调整电路，使用所述分割信号中的一个来执行预定的调整并基于所述调整输出信号; 失真信号发生电路使用从信号调节电路输出的信号产生失真信号; 信号合成电路用所生成的失真信号合成另外的分频信号; 以及信号放大电路，放大合成信号并输出输出信号，并且其中信号调节电路执行预定调整，使得在包含在失真信号中的预定频率分量的信号幅度之间存在预定的关系以及包含在失真信号中的预定频率分量的信号幅度之间的差的电平。

8. 发明授权

US06972621B2 Power amplifier 失效
标题翻译：功率放大器
公开(公告)号：US06972621B2
公开(公告)日：2005-12-06
申请号：US10964762
申请日：2004-10-15
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3247 , H03F2200/102
摘要： A power amplifier capable of compensating for distortion by pre-distortion and achieving a large distortion suppressing effect even if IM3L components and IM3U components occurring at the power amplifier have a large level difference. A power amplifying circuit 117 amplifies an original signal. An envelope detector 119 generates an envelope signal having components identical to envelope components included in the original signal. Based on the original signal a distortion signal generating circuit 112 generates a distortion signal for canceling distortion components occurring while the original signal is amplified by the power amplifying circuit 117. In a power combiner 116, the envelope signal is injected to the original signal, thereby eliminating the asymmetric characteristic of the distortion components. In the power amplifying circuit 117, the distortion signal is injected to the original signal, thereby suppressing the distortion components.
摘要翻译：功率放大器能够通过预失真来补偿失真，并且即使在功率放大器处出现的IM3L分量和IM3U分量具有较大的电平差，也能实现大的失真抑制效果。功率放大电路117放大原始信号。包络检测器119产生具有与包含在原始信号中的包络分量相同的分量的包络信号。基于原始信号，失真信号发生电路112产生用于消除由功率放大电路117放大原始信号时发生的失真分量的失真信号。在功率合成器116中，将包络信号注入原始信号，从而消除失真分量的不对称特性。在功率放大电路117中，将失真信号注入原始信号，从而抑制失真成分。

9. 发明授权

US06833758B2 Power amplifier 失效
标题翻译：功率放大器
公开(公告)号：US06833758B2
公开(公告)日：2004-12-21
申请号：US10446055
申请日：2003-05-28
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Seiji Fujiwara
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F2200/102
摘要： A power amplifier capable of compensating for distortion by pre-distortion and achieving a large distortion suppressing effect even if IM3L components and IM3U components occurring at the power amplifier have a large level difference. A power amplifying circuit 117 amplifies an original signal. An envelope detector 119 generates an envelope signal having components identical to envelope components included in the original signal. Based on the original signal a distortion signal generating circuit 112 generates a distortion signal for canceling distortion components occurring while the original signal is amplified by the power amplifying circuit 117. In a power combiner 116, the envelope signal is injected to the original signal, thereby eliminating the asymmetric characteristic of the distortion components. In the power amplifying circuit 117, the distortion signal is injected to the original signal, thereby suppressing the distortion components.
摘要翻译：功率放大器能够通过预失真来补偿失真，并且即使在功率放大器处出现的IM3L分量和IM3U分量具有较大的电平差，也能实现大的失真抑制效果。功率放大电路117放大原始信号。包络检测器119产生具有与包含在原始信号中的包络分量相同的分量的包络信号。基于原始信号，失真信号发生电路112产生用于消除由功率放大电路117放大原始信号时发生的失真分量的失真信号。在功率合成器116中，将包络信号注入原始信号，从而消除了失真分量的不对称特性。在功率放大电路117中，将失真信号注入原始信号，从而抑制失真成分。

10. 发明授权

US06847258B2 Power amplifier, power amplifying method and radio communication apparatus 失效
标题翻译：功率放大器，功率放大方法和无线电通信装置
公开(公告)号：US06847258B2
公开(公告)日：2005-01-25
申请号：US10299363
申请日：2002-11-18
申请人： Kaoru Ishida , Toshimitsu Matsuyoshi , Masayuki Miyaji
发明人： Kaoru Ishida , Toshimitsu Matsuyoshi , Masayuki Miyaji
IPC分类号： H03F3/60 , H03F3/68 , H03F3/04
CPC分类号： H03F3/604 , H01L2224/48091 , H01L2224/49175 , H03F2200/372 , H01L2924/00014
摘要： It is difficult that the impedance of the circuit part on the output side of an amplifying element at the frequency of a modulating wave is lower, and consequently, it is difficult to more effectively use the linearity of the amplifying element. The phase of a signal of the frequency of the modulating wave included in an amplified signal output from a FET is inverted by a difference frequency inverting circuit. The inverted signal of the frequency of the modulating wave and a signal of the frequency of a modulated wave included in an amplified signal output from a FET cancel each other out at the drain of the FET. At the drain end of the FET, the signal of the frequency of the modulating wave included in the amplified signal of the FET and a signal of the frequency of the modulating wave output from the FET cancel each other out.
摘要翻译：在调制波的频率下放大元件的输出侧的电路部分的阻抗很难，因此难以更有效地利用放大元件的线性。包含在从FET输出的放大信号中的调制波的频率的信号的相位被差分频率反相电路反相。调制波的频率的反相信号和从FET输出的放大信号中包括的调制波的频率的信号在FET的漏极处相互抵消。在FET的漏极端，包括在FET的放大信号中的调制波的频率的信号和从FET输出的调制波的频率的信号彼此抵消。

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