公开(公告)号：US20110105053A1

公开(公告)日：2011-05-05

申请号：US13004379

申请日：2011-01-11

Applicant: Takahiro NAKAMURA ,  Toru MASUDA

Inventor： Takahiro NAKAMURA ,  Toru MASUDA

IPC: H04W88/02

CPC classification number: H03B5/1228 ,  H03B5/1218 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1256 ,  H03B5/1293 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03H5/12 ,  H03J2200/10

Abstract: There are provided a variable inductor with little degradation in quality factor, and an oscillator and a communication system using the variable inductor. An inductance controller comprising a reactance device with a variable device value, such as, for example, a variable capacitor, is connected to a secondary inductor, magnetically coupled to a primary inductor through mutual inductance. The inductance controller is provided with an inductance control terminal for receiving a control signal for controlling capacitance of the variable capacitor. Inductance of the primary inductor is varied by varying the capacitance by the control signal.

Abstract translation: 提供了可变电感器，质量因子几乎没有劣化，以及使用可变电感器的振荡器和通信系统。 包括具有可变器件值的电抗器件（例如可变电容器）的电感控制器连接到次级电感器，其通过互感磁耦合到初级电感器。 电感控制器设置有用于接收用于控制可变电容器的电容的控制信号的电感控制端子。 通过控制信号改变电容来改变初级电感器的电感。

公开(公告)号：US20100271122A1

公开(公告)日：2010-10-28

申请号：US12765010

申请日：2010-04-22

Applicant: Toru MASUDA ,  Nobuhiro Shiramizu ,  Takahiro Nakamura ,  Katsuyoshi Washio

Inventor： Toru MASUDA ,  Nobuhiro Shiramizu ,  Takahiro Nakamura ,  Katsuyoshi Washio

IPC: H03G3/20

CPC classification number: H03G3/3052

Abstract: There is disclosed a variable-gain amplifier circuit that operates on a low voltage, exhibits low distortion, provides a wide range of variation, and is suitable for use in a low-power-consumption wireless communication system. The variable-gain amplifier circuit is configured so that a variable-load circuit, which includes three reactance function elements and provides a wide range of impedance variation, is connected to a conductor circuit whose output terminal generates a positive-phase output current proportional to conductance with respect to an input voltage.

Abstract translation: 公开了一种在低电压下操作的可变增益放大器电路，具有低失真，提供宽范围的变化，并且适用于低功耗无线通信系统。 可变增益放大器电路被配置为使得包括三个电抗功能元件并提供宽范围的阻抗变化的可变负载电路连接到其输出端产生与电导成比例的正相输出电流的导体电路 相对于输入电压。

公开(公告)号：US20090033440A1

公开(公告)日：2009-02-05

申请号：US12127782

申请日：2008-05-27

Applicant: Toru MASUDA ,  Hiroshi Mori

Inventor： Toru MASUDA ,  Hiroshi Mori

IPC: H03H11/00

CPC classification number: H03H11/42 ,  H03H11/1291

Abstract: The present invention is directed to provide a low-power-consumption wide-range RF signal processing unit having a small chip occupation area. A semiconductor integrated circuit has, on a semiconductor chip, a resonant circuit including a first capacitor having a capacitance which can be controlled by a first control signal of a first control terminal, and a gyrator for equivalently emulating an inductor by including a second capacitor having a capacitance which can be controlled by a second control signal of a second control terminal. The capacitance and the inductor form a parallel resonant circuit. At the time of changing parallel resonant frequency, the capacitances of the first and second capacitors are coordinately changed. The parallel resonant circuit is suitable for an active load which is connected to an output node of an amplifier.

Abstract translation: 本发明旨在提供一种具有小芯片占用面积的低功耗宽范围RF信号处理单元。 半导体集成电路在半导体芯片上具有谐振电路，该谐振电路包括具有可由第一控制端子的第一控制信号控制的电容的第一电容器和用于等效地仿真电感器的回转器，该回转器包括：第二电容器， 可以由第二控制端子的第二控制信号控制的电容。 电容和电感器形成并联谐振电路。 在改变并联谐振频率时，第一和第二电容器的电容被协调地改变。 并联谐振电路适用于连接到放大器的输出节点的有功负载。

公开(公告)号：US20070298750A1

公开(公告)日：2007-12-27

申请号：US11759716

申请日：2007-06-07

Applicant: Toru MASUDA

Inventor： Toru MASUDA

IPC: H04B1/26

CPC classification number: H03B21/02

Abstract: A frequency synthesizer comprises: a single-tone signal generator which outputs signals of a single frequency; a frequency multiplier which generates one or more intermediate signals having different frequencies based on frequencies of input signals and outputs the same as output signals; a frequency selector; a mixer; and a frequency synthesizer control circuit which includes a frequency synthesizer control terminal, wherein an output of the single-tone signal generator is set as an input of the frequency multiplier, one or more outputs of the frequency multiplier are set as one or more inputs of the frequency selector, an output of the frequency selector and one output of the outputs of the frequency multiplier are set as first and second inputs of the mixer, and an output of the mixer is set as an output of the frequency synthesizer.

Abstract translation: 频率合成器包括：输出单频信号的单音信号发生器; 频率乘法器，其基于输入信号的频率产生具有不同频率的一个或多个中间信号，并输出与输出信号相同的频率倍增器; 频率选择器 搅拌机 以及频率合成器控制电路，其包括频率合成器控制端子，其中单音信号发生器的输出被设置为倍频器的输入，倍频器的一个或多个输出被设置为 频率选择器，频率选择器的输出和倍频器的输出的一个输出被设置为混频器的第一和第二输入，并且混频器的输出被设置为频率合成器的输出。