公开(公告)号：US20060040635A1

公开(公告)日：2006-02-23

申请号：US11078394

申请日：2005-03-14

Applicant: Kaoru Ishida ,  Hiroshi Komori

Inventor： Kaoru Ishida ,  Hiroshi Komori

IPC: H04B1/18 ,  H04B1/26

CPC classification number: H04B1/1607 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0025 ,  H03D2200/0033 ,  H03D2200/0043

Abstract: An average level detection circuit 10 outputs a level of an input signal of a baseband output signal or a mixer circuit. A smoothing circuit 11 removes an AC component from an output signal of the average level detection circuit 10. A reference comparison circuit 12 outputs a level suppression signal when an output signal of the smoothing circuit 11 exceeds a predetermined reference voltage. When the reference comparison circuit 12 outputs the level suppression signal, the limiter circuit 13 controls the bias circuit 14 to suppress a bias current of the mixer circuit. As a result, it is possible to obtain a low-current-consumption signal reception front-end circuit in which an IF output level is not significantly lowered under an unexpectedly strong input condition, and a signal reception circuit in which an error does not occur in signal reception level detection.

Abstract translation: 平均电平检测电路10输出基带输出信号或混频电路的输入信号的电平。 平滑电路11从平均电平检测电路10的输出信号中去除AC分量。 当平滑电路11的输出信号超过预定参考电压时，参考比较电路12输出电平抑制信号。 当参考比较电路12输出电平抑制信号时，限幅电路13控制偏置电路14以抑制混频器电路的偏置电流。 结果，可以获得在意外强的输入条件下IF输出电平没有显着降低的低电流消耗信号接收前端电路和其中不发生错误的信号接收电路 在信号接收电平检测。

公开(公告)号：US06977548B2

公开(公告)日：2005-12-20

申请号：US10946301

申请日：2004-09-22

Applicant: Toru Matsuura ,  Kaoru Ishida ,  Makoto Sakakura ,  Seiji Fujiwara

Inventor： Toru Matsuura ,  Kaoru Ishida ,  Makoto Sakakura ,  Seiji Fujiwara

IPC: H03F1/26 ,  H03F1/32

CPC classification number: H03F1/3241 ,  H03F1/3229 ,  H03F1/3247 ,  H03F1/3276 ,  H03F1/3282

Abstract: An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by the amplitude frequency characteristic adjustment circuit 106, and then their amplitudes and phases are adjusted by a vector adjustment circuit 107. This configuration makes it possible to suppress simultaneously both of low-frequency-side and high-frequency-side distortion voltages of a distortion generated by a wide-band class-AB power amplifier even if they are different in amplitude and phase.

公开(公告)号：US06972621B2

公开(公告)日：2005-12-06

申请号：US10964762

申请日：2004-10-15

Applicant: Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

Inventor： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

IPC: H03F1/32 ,  H03F1/26

CPC classification number: H03F1/3247 ,  H03F2200/102

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06833758B2

公开(公告)日：2004-12-21

申请号：US10446055

申请日：2003-05-28

Applicant: Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

Inventor： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

IPC: H03F126

CPC classification number: H03F1/3247 ,  H03F2200/102

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06803837B2

公开(公告)日：2004-10-12

申请号：US10438045

申请日：2003-05-15

Applicant: Kaoru Ishida ,  Masayuki Miyaji ,  Hiroaki Kosugi ,  Shin'ichi Kugou

Inventor： Kaoru Ishida ,  Masayuki Miyaji ,  Hiroaki Kosugi ,  Shin'ichi Kugou

IPC: H01P512

CPC classification number: H01P5/10 ,  H01P5/12 ,  H03F3/602

Abstract: A balun design incorporating the functions of a splitter (combiner) which can be employed in a high power amplifier circuit configuration. The balun is formed of a dielectric multilayer board with conductor patterns on each conductor pattern layer. The balun includes the propagation of a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase output terminals, the signal propagated to the first and second opposite-phase output terminals lagging 180 degrees behind the signal propagated to the in-phase output terminal. The balun provides the output signals at the first and second opposite-phase output terminals 180° out of phase employing through holes in the main line and coupling lines for promoting electromagnetic coupling therebetween.

Abstract translation: 平衡 - 不平衡变压器设计结合了可用于高功率放大器电路配置的分路器（组合器）的功能。 平衡 - 不平衡变换器由在每个导体图案层上具有导体图案的电介质多层板形成。 平衡 - 不平衡变换器包括将输入信号的一半传播到同相输出端子，并且还将第四输入信号传播到第一和第二反相输出端子，该信号传播到第一和第二相位相位 输出端子滞后于传播到同相输出端子的信号后方180度。 平衡 - 不平衡变压器在第一和第二反相输出端子处提供输出信号，180°异相采用主线中的通孔和用于促进电磁耦合的连接线。

公开(公告)号：US06750706B2

公开(公告)日：2004-06-15

申请号：US10167687

申请日：2002-06-11

Applicant: Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

Inventor： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

IPC: H03F366

CPC classification number: H03F1/3235 ,  H03F1/3229 ,  H03F2201/3212

Abstract: A method of controlling a feedforward distortion compensation amplifier has steps of detecting a distortion component generated in a main amplifier by coupling a signal branched from a signal input to the main amplifier and containing a plurality of carriers of different frequencies to a signal branched from an output signal from the main amplifier so that the coupling causes the carrier components to cancel each other, recoupling the signal resulting from the coupling to the output signal from the main amplifier, and adjusting an amplitude and phase of at least one of the signals to be recoupled so that distortion components cancel each other upon recoupling, wherein a first and second pilot signals obtained from a first and second pilot signal sources are inserted into the input signal to or output signal from the main amplifier, parts of the signal resulting from the recoupling are taken out through branching, and the signals taken out through branching are mixed with the first and second pilot signals, respectively, and thus down-converted to generate down convert signals so that control signals to adjust the amplitude and phase are generated according to the down convert signals.

Abstract translation: 控制前馈失真补偿放大器的方法具有通过将从输入信号分支到主放大器并将不同频率的多个载波分支的信号耦合到从输出信号分支的信号来检测在主放大器中产生的失真分量的步骤 使得耦合使得载波分量彼此抵消，将耦合产生的信号重新耦合到来自主放大器的输出信号，并且调整要重新耦合的至少一个信号的振幅和相位，从而 该失真分量在重新耦合时彼此抵消，其中从第一和第二导频信号源获得的第一和第二导频信号被插入到主放大器的输入信号中或从主放大器输出信号，取出由重新耦合产生的信号的部分 通过分支输出，并且通过分支取出的信号与第一和第二部分混合 并且因此下变频以产生下变频信号，从而根据降频转换信号产生调节幅度和相位的控制信号。

公开(公告)号：US06421530B1

公开(公告)日：2002-07-16

申请号：US08933848

申请日：1997-09-19

Applicant: Hisashi Adachi ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Hiroshi Haruki ,  Junichi Yasuno ,  Kazuhiko Ikeda

Inventor： Hisashi Adachi ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Hiroshi Haruki ,  Junichi Yasuno ,  Kazuhiko Ikeda

IPC: H04B140

CPC classification number: H04B1/403

Abstract: The present invention concerns a radio circuit including a local oscillator, a first receive frequency converter, a frequency divider and a demodulator. A receive signal and an output of the local oscillator are input to the first receive frequency converter. The receive signal is converted into a first intermediate signal by the first receive frequency converter, and the first intermediate frequency signal is input to the demodulator. The output of the local oscillator is frequency-divided by the frequency divider and also input to the demodulator. The signal converted into the first intermediate frequency is demodulated into a baseband signal by the demodulator.

Abstract translation: 本发明涉及包括本地振荡器，第一接收频率转换器，分频器和解调器的无线电电路。 接收信号和本地振荡器的输出被输入到第一接收变频器。 接收信号由第一接收频率转换器转换成第一中间信号，第一中频信号被输入到解调器。 本地振荡器的输出由分频器分频，并输入到解调器。 转换成第一中频的信号由解调器解调为基带信号。

公开(公告)号：US5973557A

公开(公告)日：1999-10-26

申请号：US950859

申请日：1997-10-15

Applicant: Masayuki Miyaji ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Yoichi Morinaga ,  Hidenobu Kato ,  Takashi Enoki

Inventor： Masayuki Miyaji ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Yoichi Morinaga ,  Hidenobu Kato ,  Takashi Enoki

IPC: H03F1/02 ,  H03F3/72 ,  H04B1/04 ,  H04B1/40 ,  H03F1/14 ,  H03F3/68

CPC classification number: H03F3/72 ,  H03F1/0277 ,  H03F2203/7236 ,  H03F2203/7239 ,  H04B1/0458 ,  H04B1/406 ,  H04B2001/045

Abstract: The invention presents a high efficiency linear power amplifier of plural frequency bands reduced in the number of parts and elements, simplified in the circuit construction, and saved in the circuit space, and in FIG. 1, signals entering from a common input terminal 1 in frequency bands A and B are matched in both frequency bands A and B in a wide band matching network 2, amplified in a pre-amplifier 3, put into a common terminal 4a of a switch circuit 4, and the signal in frequency band A is put into a changeover terminal 4b, matched in a matching network 5 and amplified in a post-amplifier 6, and its output is matched in a post-matching network 7 and sent out into an output terminal 8, while, similarly, the signal in frequency band B is put into other changeover terminal 4c of the switch circuit 4, matched in a matching network 9, amplified in a post-amplifier 10, and its output is matched in a post-matching network 11 and is sent out into an output terminal 12.The invention also presents a power amplifier capable of maintaining a similar high efficiency characteristic if the output power is lowered from the output power of maximum efficiency, and in FIG. 10, first and second power amplifiers 113, 114 are disposed in parallel, and a necessary number of power amplifiers are connected depending on a required output power by switch circuits 115 to 118, and the power source is turned on only in the connected power amplifiers, while the other power amplifiers are turned off, and therefore by the lowering portion of the output power, the current consumption decreases in proportion, so that the equivalent high efficiency operation same as in the case maximum efficiency is realized.

Abstract translation: 本发明提出了一种减少零件和元件数量的多个频带的高效线性功率放大器，简化了电路结构，并节省在电路空间中。 如图1所示，在宽频带匹配网络2中的频带A和B中的频带A和B中从公共输入端子1进入的信号被匹配，在前置放大器3中放大，放入开关的公共端子4a 电路4，并且将频带A中的信号放入转换端子4b中，在匹配网络5中匹配并在后置放大器6中放大，并且其输出在后匹配网络7中匹配并发送到 输出端子8，同样地，将频带B中的信号放入开关电路4的其他转换端子4c中，在匹配网络9中匹配，在后置放大器10中放大，并且其输出在后置 - 匹配网络11并被发送到输出端子12.本发明还提供了一种如果输出功率从最大效率的输出功率降低而能够保持类似的高效率特性的功率放大器，并且在图1中， 如图10所示，第一和第二功率放大器113,114并联设置，并且必要数量的功率放大器根据所需的输出功率被开关电路115至118连接，并且仅在连接的功率放大器中接通电源 而其他功率放大器关闭，因此通过输出功率的下降部分，电流消耗成比例地减小，从而实现与最大效率情况相同的等效高效率操作。

公开(公告)号：US5901345A

公开(公告)日：1999-05-04

申请号：US056446

申请日：1998-04-06

Applicant: Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

Inventor： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

IPC: H03F3/24 ,  H03F3/21 ,  H03F3/60 ,  H04B1/04 ,  H03F3/68

CPC classification number: H03F3/211 ,  H03F3/604

Abstract: The output of a digital modulator is put into a power amplifying device, is distributed into n pieces in an n-power divider in the power amplifier, passes through n input phase shifters differing individually in the phase change amount, is amplified by n power amplifiers, passes through n output phase shifters to match the phase of n signals, is combined in an n-power combiner, and is issued from an output terminal to a phase shifter, and the output of the phase shifter is issued to a transmission antenna. Herein, the phase value of the phase shifter is determined so as to extend the region of the output load impedance for satisfying the specific value of unwanted radiation, and so that the output load impedance range of the load impedance of the power amplifier may be optimize to the impedance change range of the trans missionantenna, thereby eliminating the isolator and presenting a transmitting device of a portable wireless system realizing smaller size, higher performance, and lower cost of portable wireless system.

Abstract translation: 数字调制器的输出放入功率放大装置中，在功率放大器的n功率分配器中分配成n个片段，通过相位变化量不同的n个输入移相器，由n个功率放大器 ，通过n个输出移相器以匹配n个信号的相位，被组合在n个功率组合器中，并且从输出端子发送到移相器，并且将移相器的输出发送到发送天线。 这里，确定移相器的相位值，以便扩大输出负载阻抗的区域以满足不需要的辐射的特定值，并且使得功率放大器的负载阻抗的输出负载阻抗范围可以被优化 到传输天线的阻抗变化范围，从而消除了隔离器并呈现便携式无线系统的发送装置，实现便携式无线系统的更小的尺寸，更高的性能和更低的成本。

公开(公告)号：US08219043B2

公开(公告)日：2012-07-10

申请号：US12644546

申请日：2009-12-22

Applicant: Takatoshi Kawai ,  Kaoru Ishida

Inventor： Takatoshi Kawai ,  Kaoru Ishida

IPC: H04B1/00

CPC classification number: H04B1/0475 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433

Abstract: A radio transmission apparatus according to the present invention detects an output current of a power supply section that varies in response to a variation of the output impedance of an amplification section, and corrects a distortion of the input/output characteristic of the amplification section by using an LUT corresponding to the detected output current. In addition, a threshold used for switching an LUT is caused to be different depending on a switching direction between LUTs, thereby suppressing frequent occurrence of switching of the LUT.

Abstract translation: 根据本发明的无线电发送装置检测响应于放大部分的输出阻抗的变化而变化的电源部分的输出电流，并且通过使用来校正放大部分的输入/输出特性的失真 对应于检测到的输出电流的LUT。 此外，根据LUT之间的切换方向，使用于切换LUT的阈值不同，从而抑制LUT的切换的频繁发生。