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1. 发明专利

JP2007228062A Doherty amplifier 有权
标题翻译： DOHERTY放大器
公开(公告)号：JP2007228062A
公开(公告)日：2007-09-06
申请号：JP2006044083
申请日：2006-02-21
申请人： Toshiba Corp , 株式会社東芝
发明人： KIJIMA TORU , OTSUKA ISATOSHI
IPC分类号： H03F1/07 , H03F1/30 , H03F3/60
摘要： PROBLEM TO BE SOLVED: To provide a Doherty amplifier, having an increased tolerance to an external disturbance with a restrained characteristic dispersion product-by-product.
SOLUTION: A signal partially branching from the output of a main amplifier 2 is added to an input signal with an inverted phase, so as to input to a peaking amplifier 3, thereby making bias adjustment on the peaking amplifier 3 unnecessary. Namely, because a signal corresponding to the relation between the output of the main amplifier 2 and the input signal is input to the peaking amplifier 3, the power from the peaking amplifier 3 is supplied by the amount of power caused, by a reduced gain of the main amplifier 2 due to saturation. Accordingly, it then becomes possible to provide the Doherty amplifier having an improved rising characteristics of the drain current of the peaking amplifier 3, with the provision for increased linearity, reduced characteristic dispersion depending on a component, and also high tolerance to the external disturbance.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种Doherty放大器，具有增加的对外部干扰的容限，具有抑制特征色散产物。解决方案：将从主放大器2的输出部分分支的信号加到具有反相的输入信号中，以便输入到峰值放大器3，从而不必对峰化放大器3进行偏置调整。也就是说，由于与主放大器2的输出与输入信号的关系对应的信号被输入到峰化放大器3，所以来自峰值放大器3的功率由所引起的功率量提供，主放大器2由于饱和。因此，可以提供具有改善的峰值放大器3的漏极电流的上升特性的Doherty放大器，提供线性度增加，取决于部件的特性色散减小，以及对外部干扰的高容限度。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005151401A Feedforward type power amplifier 审中-公开
标题翻译：前置式功率放大器
公开(公告)号：JP2005151401A
公开(公告)日：2005-06-09
申请号：JP2003389020
申请日：2003-11-19
申请人： Toshiba Corp , 株式会社東芝
发明人： KAYAYA HIROYUKI , ARAKI HIROTA , OTSUKA ISATOSHI
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To provide a feedforward type power amplifier which is manufactured at a low cost and excellent in transmission characteristics. SOLUTION: The feedforward power amplifier comprises a main amplifier 2 which amplifies input signals; a distortion extracting circuit 31 which extracts only a distorted component contained in the output signals of the main amplifier 2; and a distortion canceling circuit 32 which removes the distorted component from the output signals of the main amplifier 2. A delay circuit 9 located on a lower side of the main amplifier 2 is formed of a plane circuit, an isolator 8 is arranged between the output terminal of the main amplifier 2 and the delay circuit 9, so that a standing wave is prevented from occurring on a transmission line, a power is not unnecessarily radiated, a component cost and a manufacturing cost are low, and thus the feedforward power amplifier excellent in maintainability can be realized. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供以低成本制造并且传输特性优异的前馈型功率放大器。解决方案：前馈功率放大器包括放大输入信号的主放大器2; 失真提取电路31，其仅提取包含在主放大器2的输出信号中的失真分量; 以及失真消除电路32，其从主放大器2的输出信号中去除失真分量。位于主放大器2的下侧的延迟电路9由平面电路构成，隔离器8布置在输出端主放大器2和延迟电路9的端子，从而防止在传输线上发生驻波，不会不必要地发射功率，部件成本和制造成本低，因此前馈功率放大器优异可维护性可以实现。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005151400A Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：JP2005151400A
公开(公告)日：2005-06-09
申请号：JP2003389008
申请日：2003-11-19
申请人： Toshiba Corp , 株式会社東芝
发明人： ARAKI HIROTA , KAYAYA HIROYUKI , OTSUKA ISATOSHI
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To provide a small size and light weight power amplifier having low distortion and high efficiency.
SOLUTION: The power amplifier 3 includes a synthesizer 20 for combining an I signal and a Q signal to generate a main signal, a directional coupler 1 for branching the output of the synthesizer 20 in two directions, a main amplifier 2 for amplifying a main signal passing the directional coupler 1, an error amplifier 3 for performing a distortion correction of the man signal and a signal deterioration correction, and a directional coupler 4 for combining the output signal of the main amplifier 2 and the output signal of the error amplifier 3. The amount of the distortion of the main amplifier 6 is detected by an inverse distortion generating circuit 7 and a phase regulating circuit 8, the amount of the signal deterioration of the main amplifier 2 is detected by a signal deterioration compensating circuit 9 and a phase regulating circuit 10. To synthesize these detected result and the output signal of the main amplifier 2, the signal distortion and the signal deterioration of the main signal generated by the main amplifier 2 can be compensated, and a linear operation of high efficiency can be performed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有低失真和高效率的小尺寸和重量轻的功率放大器。解决方案：功率放大器3包括用于组合I信号和Q信号以产生主信号的合成器20，用于将合成器20的输出沿两个方向分支的定向耦合器1，用于放大的主放大器2 通过定向耦合器1的主信号，用于执行人信号和信号恶化校正的失真校正的误差放大器3，以及用于组合主放大器2的输出信号和误差输出信号的定向耦合器4 主放大器6的失真量由逆变形产生电路7和相位调整电路8检测，主放大器2的信号劣化量由信号劣化补偿电路9检测，相位调节电路10.为了合成这些检测结果和主放大器2的输出信号，主信号的信号失真和信号恶化可以补偿由主放大器2产生的信号，并且可以执行高效率的线性操作。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004297656A Feedforward amplifier and radio communication device equipped with the same 审中-公开
公开(公告)号：JP2004297656A
公开(公告)日：2004-10-21
申请号：JP2003089802
申请日：2003-03-28
申请人： Toshiba Corp , 株式会社東芝
发明人： KAYANO HIROYUKI , ARAKI HIROTA , OTSUKA ISATOSHI
IPC分类号： H03F1/02 , H03F1/32 , H03F3/72 , H03G1/00 , H03G3/30 , H04B1/04
CPC分类号： H03G3/3042 , H03F1/0211 , H03F1/0277 , H03F1/3229 , H03F3/72 , H03G1/0088 , H03G2201/103 , H03G2201/206 , H03G2201/307
摘要： PROBLEM TO BE SOLVED: To further reduce power consumption at the time of a small signal output.
SOLUTION: When a radio signal is transmitted to a small cell according to an amplifying operation mode designated by a main controller 10 in an amplifying control circuit 120, a feeding control circuit 121 is controlled to stop feeding to a main amplifier 101 and to feed to an error amplifier 110 in stead of the main amplifier 101. Also, switchover switches 112 and 113 are controlled to switch a movable point to a fixed point "b" side. Thus, the radio signal amplified by the error amplifier 110 is transmitted as the radio signal of power corresponding to the small cell.
COPYRIGHT: (C)2005,JPO&NCIPI

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