公开(公告)号：US20060009182A1

公开(公告)日：2006-01-12

申请号：US11169978

申请日：2005-06-29

Applicant: Takuji Yoneda ,  Hidehiko Kurimoto ,  Kaoru Ishida

Inventor： Takuji Yoneda ,  Hidehiko Kurimoto ,  Kaoru Ishida

IPC: H04B1/06 ,  H04L27/08 ,  H04B7/00

CPC classification number: H03G3/3078 ,  H03G1/04 ,  H03G3/3052 ,  H04B1/30

Abstract: The direct conversion receiving apparatus has a gain control amplifier for variably amplifying a base band signal based on a gain switching control signal. A high pass filter has a first circuit including capacitors connected in parallel that are inserted in a path connecting an input terminal to an output terminal and switching effective total capacitance of the capacitors based on a first time constant switching control signal, and a second circuit including a resistor for providing a predetermined direct current voltage to the output terminal and switching the effective resistance value of the resistor based on a second time constant switching control signal. A control circuit outputs the gain switching control signal, and the first and second time constant switching control signals according to the change of the gain control of said gain control amplifier.

Abstract translation: 直接变换接收装置具有用于基于增益切换控制信号可变地放大基带信号的增益控制放大器。 高通滤波器具有第一电路，其包括并联连接的电容器，其插入到连接输入端子到输出端子的路径中，并且基于第一时间常数切换控制信号切换电容器的有效总电容;以及第二电路，包括 用于向输出端子提供预定的直流电压并基于第二时间常数切换控制信号切换电阻器的有效电阻值的电阻器。 控制电路根据所述增益控制放大器的增益控制的变化来输出增益切换控制信号以及第一和第二时间常数切换控制信号。

公开(公告)号：US06980831B2

公开(公告)日：2005-12-27

申请号：US10432356

申请日：2001-12-06

Applicant: Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Hisashi Adachi

Inventor： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Hisashi Adachi

IPC: H04B10/2575 ,  H04L12/28 ,  H04W88/08 ,  H04M1/00 ,  H03F1/00

CPC classification number: H04W88/08 ,  H04B10/25758 ,  H04W88/085 ,  Y02D70/46

Abstract: A wireless communication base station system of the present invention includes a wireless key base station, an optical forward base station, and an optical transmitter which connects the wireless key base station and the optical forward base station to each other. An optical signal modulated by a signal component and that modulated by a distortion component are transmitted from the wireless key base station to the optical forward base station. In the optical forward base station, these optical signals are converted to high-frequency electrical signals, and the high-frequency signal consisting of the signal component is amplified. Thereafter, the amplified signal is combined with the high-frequency signal consisting of the distortion component with their phases opposite to each other, so that the distortion component include in the amplified signal is removed.

Abstract translation: 本发明的无线通信基站系统包括无线密钥基站，光学前向基站和将无线密钥基站与光学前向基站相互连接的光发送器。 由信号分量调制并由失真分量调制的光信号从无线键基站发送到光前向基站。 在光学正向基站中，这些光信号被转换为高频电信号，由信号分量组成的高频信号被放大。 此后，放大的信号与由相位相反的失真分量组成的高频信号组合，从而去除放大信号中的失真分量。

公开(公告)号：US06960959B2

公开(公告)日：2005-11-01

申请号：US10450634

申请日：2001-12-13

Applicant: Naoki Komatsu ,  Toru Matsuura ,  Hiroshi Isono ,  Kaoru Ishida

Inventor： Naoki Komatsu ,  Toru Matsuura ,  Hiroshi Isono ,  Kaoru Ishida

IPC: H03F3/19 ,  H03F3/60 ,  H03F3/68 ,  H03F3/72

CPC classification number: H03F3/19 ,  H03F3/602 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/429 ,  H03F2203/7209 ,  H03F2203/7236 ,  H03F2203/7239

Abstract: A power amplifier of amplifying signals of two frequency bands is reduced in size and improved in efficiency at low output.The power amplifier includes an input terminal, a branch circuit and so on having one input and a plurality of outputs, the input being connected to the input terminal, amplifying means which are connected to some outputs of the branch circuit and so on and are operated at different signal frequencies from each other, a transmission line connected to one of the other outputs of the branch circuit, a synthesizing circuit connected to the outputs of the amplifying means and the output from the transmission line, a switch provided between the transmission line and a synthesis output unit, and a control circuit of controlling conduction of the branch circuit and so on, conduction and an amplifying operation of the amplifying means, and conduction of the switch.

Abstract translation: 放大两个频带信号的功率放大器的尺寸减小，并且在低输出时效率得到改善。 功率放大器包括具有一个输入和多个输出的输入端子，分支电路等，输入端连接到输入端子，放大装置连接到分支电路的某些输出等并被操作 在彼此不同的信号频率处，连接到分支电路的其他输出之一的传输线，连接到放大装置的输出和来自传输线的输出的合成电路，设置在传输线和 合成输出单元，以及控制分支电路的导通等的控制电路，放大装置的导通和放大操作以及开关的导通。

公开(公告)号：US06960957B2

公开(公告)日：2005-11-01

申请号：US10395092

申请日：2003-03-25

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：US20050237113A1

公开(公告)日：2005-10-27

申请号：US11100507

申请日：2005-04-07

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.

Abstract translation: 幅度频率特性调整电路106设置在失真产生电路105的下游并连接到失真产生电路105。 通过幅度频率特性调整电路106调整低频侧和高频侧失真电压之间的幅度差，然后通过矢量调整电路107调整其幅度和相位。 通过这种结构，即使幅度和相位不同，也能同时抑制由宽带AB类功率放大器产生的失真的低频侧和高频侧的失真电压。

公开(公告)号：US20050186934A1

公开(公告)日：2005-08-25

申请号：US11055085

申请日：2005-02-11

Applicant: Hiroshi Yajima ,  Kaoru Ishida

Inventor： Hiroshi Yajima ,  Kaoru Ishida

IPC: H01L27/04 ,  G11C7/00 ,  G11C29/00 ,  H01L21/822 ,  H04B1/06 ,  H04B15/00

CPC classification number: H04B15/00

Abstract: An object of the present invention is to provide a semiconductor integrated circuit that reduces the influence of noise from a digital circuit block on an analog circuit block, both the circuit blocks being integrated on the same semiconductor substrate. In the wiring that passes through near the analog circuit block and the digital circuit block, having a grounding unit that performs alternate grounding makes it possible to reduce the influence of noise from the digital circuit block on the analog circuit block.

Abstract translation: 本发明的目的是提供一种减少来自数字电路块的噪声对模拟电路块的影响的半导体集成电路，两个电路块都集成在同一半导体衬底上。 在通过模拟电路块附近的布线和数字电路块中，具有执行交替接地的接地单元可以减少模拟电路块上数字电路块的噪声的影响。

公开(公告)号：US20050090218A1

公开(公告)日：2005-04-28

申请号：US10969927

申请日：2004-10-22

Applicant: Kaoru Ishida ,  Toshiakira Ando

Inventor： Kaoru Ishida ,  Toshiakira Ando

IPC: H03B5/12 ,  H03L7/08 ,  H03L7/089 ,  H03L7/099 ,  H03L7/18 ,  H04B1/06 ,  H04B1/26 ,  H04B7/00

CPC classification number: H03L7/18 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1293 ,  H03L7/0891 ,  H03L7/099

Abstract: A differential type voltage control oscillator is formed of a differential tank circuit, an oscillation transistor, and a differential variable capacitance circuit. The differential variable capacitance circuit has a configuration wherein at least one pair of varactor diodes are connected in an anti-parallel manner, and are separated by means of a plurality of capacitors in a direct current manner. In addition, a differential control voltage is generated by a charge pump circuit which is controlled by the output of a phase comparator, and the differential control voltage is directly applied across the anodes and the cathodes of the varactor diodes.

Abstract translation: 差分式电压控制振荡器由差分谐振电路，振荡晶体管和差分可变电容电路构成。 差分可变电容电路具有这样的结构，其中至少一对变容二极管以反并联方式连接，并且通过多个电容器以直流方式分离。 此外，通过由相位比较器的输出控制的电荷泵电路产生差分控制电压，并且差动控制电压直接施加在变容二极管的阳极和阴极之间。

公开(公告)号：US20050035818A1

公开(公告)日：2005-02-17

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.

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：US06720829B2

公开(公告)日：2004-04-13

申请号：US10323836

申请日：2002-12-20

Applicant: Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

Inventor： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

IPC: H03F126

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06563395B2

公开(公告)日：2003-05-13

申请号：US09758427

申请日：2001-01-12

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

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

IPC: H01P510

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。