公开(公告)号：US06847258B2

公开(公告)日：2005-01-25

申请号：US10299363

申请日：2002-11-18

Applicant: Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Masayuki Miyaji

Inventor： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Masayuki Miyaji

IPC: H03F3/60 ,  H03F3/68 ,  H03F3/04

CPC classification number: H03F3/604 ,  H01L2224/48091 ,  H01L2224/49175 ,  H03F2200/372 ,  H01L2924/00014

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06791409B2

公开(公告)日：2004-09-14

申请号：US10198251

申请日：2002-07-18

Applicant: Kaoru Ishida ,  Naoki Takachi ,  Rie Takeuchi

Inventor： Kaoru Ishida ,  Naoki Takachi ,  Rie Takeuchi

IPC: H03F126

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

Abstract: (Object) It was difficult for a feedforward amplifier to perform stable and high-speed distortion compensation control. (Constitution) It is a feedforward amplifier having CPL1 of dividing an input carrier signal into two output signals, VAP1 of adjusting one of the two divided output signals, AMP1 of amplifying the adjusted one of the output signals to generate an amplification signal, CPL2 of extracting a distortion signal by utilizing the other output signal of the two divided output signals and the generated amplification signal, CPL3 of generating an output carrier signal by utilizing the generated amplification signal and the extracted distortion signal, and CNT1 having a log amplifier of controlling VAP1 based on the other output signal and the generated amplification signal.

Abstract translation: （对象）前馈放大器难以执行稳定的高速失真补偿控制（构成）具有将输入载波信号分成两个输出信号的CPL1的前馈放大器，调整两个分频后的VAP1 输出信号AMP1，放大经调整后的输出信号之一，以产生放大信号，CPL2通过利用两个分频输出信号的其它输出信号和产生的放大信号提取失真信号，CPL3产生输出载波信号 通过利用所生成的放大信号和提取的失真信号，以及具有基于另一输出信号和产生的放大信号控制VAP1的对数放大器的CNT1。

公开(公告)号：US06590449B2

公开(公告)日：2003-07-08

申请号：US09865692

申请日：2001-05-29

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

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

IPC: H03F126

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.

Abstract translation: 振幅频率特性调整电路106设置在失真发生电路105的下游并连接到失真发生电路105.通过振幅频率特性调整电路106调整低频侧和高频侧失真电压之间的振幅差，然后 它们的幅度和相位由矢量调整电路107调整。这种配置使得可以同时抑制由宽带AB类功率放大器产生的失真的低频侧和高频侧失真电压两者 即使它们的幅度和相位不同。

公开(公告)号：US06300848B1

公开(公告)日：2001-10-09

申请号：US09388414

申请日：1999-09-01

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

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

IPC: H01P308

CPC classification number: H01P5/18

Abstract: According to the configuration the present power splitter, it is possible to reduce the characteristic impedance of a transmission line constituting a directional coupler by setting the impedance of a first terminal pair constituted of an input port 7a and a second output port 7d of a 6-dB branch-line-shaped directional coupler 7 to a value smaller than a reference impedance Z0 (50 &OHgr; in general) and setting the impedance of a second terminal pair constituted of an isolation port 7b and a first output port 7c of the directional coupler 7 to Z0. Therefore, it is possible to increase the number of splits and reduce loss, as compared with conventional cases.

Abstract translation: 根据本发明的功率分配器的结构，通过设置由6-端的输入端口7a和第二输出端口7d构成的第一端子对的阻抗，可以降低构成定向耦合器的传输线的特性阻抗。 dB分支线形定向耦合器7设定为小于参考阻抗Z0（通常为50欧姆）的值，并设定由定向耦合器7的隔离端口7b和第一输出端口7c构成的第二端子对的阻抗 到Z0。 因此，与常规情况相比，可以增加分割次数并减少损耗。

公开(公告)号：US6147571A

公开(公告)日：2000-11-14

申请号：US147562

申请日：1999-01-20

Applicant: Shoichi Kitazawa ,  Toru Yamada ,  Toshio Ishizaki ,  Koichi Ogawa ,  Makoto Fujikawa ,  Tadanori Fujisawa ,  Kaoru Ishida ,  Yoshitaka Nagatomi

Inventor： Shoichi Kitazawa ,  Toru Yamada ,  Toshio Ishizaki ,  Koichi Ogawa ,  Makoto Fujikawa ,  Tadanori Fujisawa ,  Kaoru Ishida ,  Yoshitaka Nagatomi

IPC: H01P1/203 ,  H01P1/205 ,  H01P1/213 ,  H03H7/01

CPC classification number: H01P1/20345 ,  H01P1/2135 ,  H03H7/0123 ,  H03H7/175 ,  H03H2001/0085 ,  H03H2250/00 ,  H03H7/463

Abstract: A dual-band multilayer bandpass filter having a first filter unit (18) for filtering a first signal having a first frequency and a second filter unit (19) for filtering a second signal having a second frequency. First and second filter units are arranged in stacked ceramic layers. A first blocking element (20a, 20b; 25a, 25b; 25a', 25b'; 46a, 46b) is coupled to the first filter unit (18) for blocking the second signal from being applied to the first filter unit (18). A second blocking element (21a, 21b; 26a, 26b; 25c, 25d; 27a, 27b) is coupled to the second filter unit (19) for blocking the first signal from being applied to the second filter unit (19).

Abstract translation: PCT No.PCT / JP97 / 02660 Sec。 371日期1999年1月20日 102（e）1999年1月20日PCT PCT 1997年7月31日PCT公布。 第WO98 / 05120号公报 日期1998年2月5日一种具有用于对具有第一频率的第一信号进行滤波的第一滤波器单元（18）和用于滤波具有第二频率的第二信号的第二滤波器单元（19）的双频带多层带通滤波器。 第一和第二滤波器单元布置在堆叠的陶瓷层中。 第一阻挡元件（20a，20b; 25a，25b; 25a'，25b'; 46a，46b）耦合到第一滤波器单元（18），用于阻止第二信号施加到第一滤波器单元（18）。 第二阻挡元件（21a，21b; 26a，26b; 25c，25d; 27a，27b）被耦合到第二滤波器单元（19），用于阻止第一信号施加到第二滤波器单元（19）。

公开(公告)号：US6037837A

公开(公告)日：2000-03-14

申请号：US245681

申请日：1999-02-08

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

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

IPC: H03F1/32 ,  H04B1/04 ,  H03F1/26

CPC classification number: H03F1/3252 ,  H03F1/3223

Abstract: A feed forward amplifier comprises a main amplifier 10 composed of a plurality of power amplifiers 8 and 9 combined in parallel. In addition to the plurality of power amplifiers, this feed forward amplifier includes a distortion detecting amplifier 25 for detecting the distortion components, having a distortion characteristic in a predetermined relationship with the distortion characteristic of the main amplifier. It also omits a distortion detecting power combiner 23 otherwise located after a main amplifier 10 and locates a delay circuit 21 before the main amplifier 10 to reduce losses occurring after the main amplifier 10 to improve the efficiency of the entire feed forward amplifier.

Abstract translation: 前馈放大器包括由并联组合的多个功率放大器8和9组成的主放大器10。 除了多个功率放大器之外，该前馈放大器还包括用于检测失真分量的失真检测放大器25，具有与主放大器的失真特性成预定关系的失真特性。 它还省略了位于主放大器10之后的失真检测功率组合器23，并且在主放大器10之前定位延迟电路21，以减少在主放大器10之后发生的损耗，以提高整个前馈放大器的效率。

公开(公告)号：US5926466A

公开(公告)日：1999-07-20

申请号：US648416

申请日：1996-05-15

Applicant: Kaoru Ishida ,  Hiroaki Kosugi ,  Fujio Sasaki ,  Yoichi Morinaga

Inventor： Kaoru Ishida ,  Hiroaki Kosugi ,  Fujio Sasaki ,  Yoichi Morinaga

IPC: H01P1/203 ,  H01P1/213 ,  H03B1/00 ,  H03H7/38 ,  H03H7/46 ,  H04B1/40 ,  H04B1/48 ,  H04B1/56 ,  H04J4/00 ,  H04L5/14

CPC classification number: H01P1/20345 ,  H01P1/2135 ,  H03H7/38 ,  H03H7/46 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/406 ,  H04B1/48 ,  H03B2201/0208 ,  H03H2007/386

Abstract: A time division multiple access FDD wireless unit has a first local oscillator 8 for oscillating a first frequency; a second local oscillator 12 for oscillating a second frequency; a n-times multiplier 14 for multiplying the second frequency by n; a m-times multiplier 18 for multiplying the second frequency by m; a converter 6 for transmitting frequency of difference between a reception signal and an output of the first local oscillator 8; a converter 11 for transmitting frequency of sum or difference between an output of the converter 6 and an output of the n-times multiplier 14; modulator 19 for modulating an output of the m-times multiplier 18; a converter 22 for transmitting frequency of sum of an output of the modulator 19 and the output of m-times multiplier 18.

Abstract translation: 时分多址FDD无线单元具有用于振荡第一频率的第一本地振荡器8; 用于振荡第二频率的第二本地振荡器12; 用于将第二频率乘以n的n次乘法器14; 用于将第二频率乘以m的m倍乘法器18; 用于发送接收信号和第一本地振荡器8的输出之间的差的频率的转换器6; 用于发送转换器6的输出和n次乘法器14的输出之间的和或差的频率的转换器11; 用于调制m次乘法器18的输出的调制器19; 用于发送调制器19的输出和m次乘法器18的输出的和的频率的转换器22。

公开(公告)号：US5770970A

公开(公告)日：1998-06-23

申请号：US705244

申请日：1996-08-30

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.