公开(公告)号：US08433013B2

公开(公告)日：2013-04-30

申请号：US12933163

申请日：2009-04-08

申请人： Yusuke Nakano ,  Hiroaki Ozeki ,  Yasunobu Tsukio ,  Takeshi Fujii

发明人： Yusuke Nakano ,  Hiroaki Ozeki ,  Yasunobu Tsukio ,  Takeshi Fujii

IPC分类号： H04L27/06

CPC分类号： H03J3/08 ,  H03H11/126 ,  H03H11/1286 ,  H03H11/1291

摘要： A receiver includes an oscillator for generating a local oscillator signal, a frequency converter for heterodyning a received signal of one frequency band or a plurality of frequency bands into an intermediate frequency (IF) signals with using the local oscillator signal, a filter connected to an output of the frequency converter and having a cut-off frequency changeable, an analog-digital (AD) converter connected to an output of the filter to convert an analog signal of one frequency band or a plurality of frequency bands into a digital signal, a pre-stage detector connected to an output of the AD converter or connected between the filter and the AD converter to detect a signal level, and a controller for controlling the cut-off frequency of the filter based on the signal level detected by the pre-stage detector.

摘要翻译： 接收机包括用于产生本地振荡器信号的振荡器，用于使用本地振荡器信号将一个频带或多个频带的接收信号外差分成中频（IF）信号的频率转换器，连接到 频率转换器的输出和截止频率可变的模拟数字（AD）转换器，连接到滤波器的输出，以将一个频带或多个频带的模拟信号转换为数字信号， 前级检测器连接到AD转换器的输出端或连接在滤波器和AD转换器之间以检测信号电平;以及控制器，用于根据预处理器检测到的信号电平来控制滤波器的截止频率， 舞台探测器。

公开(公告)号：US08384449B2

公开(公告)日：2013-02-26

申请号：US12866951

申请日：2009-02-10

申请人： Akihiko Namba ,  Yasunobu Tsukio ,  Susumu Fukushima

发明人： Akihiko Namba ,  Yasunobu Tsukio ,  Susumu Fukushima

IPC分类号： H03L7/06

CPC分类号： H03L7/1976 ,  H03L1/026 ,  H03L1/027 ,  H03L7/197

摘要： A synthesizer of the present invention includes a synthesizer section that generates an oscillation signal based on a reference oscillation signal output from a MEMS resonator and inputs the oscillation signal to a frequency converter; and a control section that adjusts a frequency of the oscillation signal output from the synthesizer section. In frequency adjustment by the control section, when a frequency adjustment unit of the synthesizer section is defined as predetermined value F in which quality of an output signal from the frequency converter is a quality limit threshold value, frequency adjustment unit Δfcont of the synthesizer section is within predetermined value F.

摘要翻译： 本发明的合成器包括：合成器部，其根据从MEMS谐振器输出的基准振荡信号生成振荡信号，并将振荡信号输入到变频器; 以及控制部，调整从合成部输出的振荡信号的频率。 在由控制部进行的频率调整中，当合成部的频率调整部被定义为来自变频器的输出信号的质量为品质限制阈值的规定值F时，合成器的频率调整部＆Dgr; fcont 截面在预定值F内。

公开(公告)号：US07944996B2

公开(公告)日：2011-05-17

申请号：US12066403

申请日：2007-05-30

申请人： Yasunobu Tsukio ,  Hiroaki Ozeki ,  Sigeru Soga

发明人： Yasunobu Tsukio ,  Hiroaki Ozeki ,  Sigeru Soga

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H04L1/20 ,  H04B7/0802 ,  H04L25/022 ,  H04L25/0232 ,  H04L25/03159 ,  H04L27/2647

摘要： An OFDM reception device includes: a first channel estimation unit for estimating a channel distortion by using a signal that is supplied from the reception unit and has a first time interval; a second channel estimation unit for estimating a channel distortion by using a signal that is supplied from the reception unit and has a second time interval shorter than the first time interval; a selection unit for selecting and outputting one of a signal from the first channel estimation unit and a signal from the second channel estimation unit, according to a control signal from the control unit; and a correction unit for correcting a reception signal supplied from the reception unit, according to the channel estimation signal from the selection unit. The control unit determines the control signal to be supplied to the selection unit, according a reception state of the reception unit.

摘要翻译： OFDM接收装置包括：第一信道估计单元，用于通过使用从接收单元提供并具有第一时间间隔的信号来估计信道失真; 第二信道估计单元，用于通过使用从所述接收单元提供并且具有比所述第一时间间隔短的第二时间间隔的信号来估计信道失真; 选择单元，用于根据来自控制单元的控制信号选择并输出来自第一信道估计单元的信号和来自第二信道估计单元的信号中的一个; 以及校正单元，用于根据来自选择单元的信道估计信号校正从接收单元提供的接收信号。 控制单元根据接收单元的接收状态确定要提供给选择单元的控制信号。

公开(公告)号：US20100201412A1

公开(公告)日：2010-08-12

申请号：US12671340

申请日：2008-07-28

申请人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

发明人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

IPC分类号： H03L7/08

CPC分类号： H03L7/183 ,  H03L1/022

摘要： An oscillator unit is configured such that a frequency adjustment unit of a synthesizer used by a controller is smaller than a frequency variation tracking capability of a demodulator connected to an output side of a frequency converter. This structure successfully combines the temperature compensation control of an oscillator unit and the receiving process of a high-frequency receiving device. Accordingly, an oscillator unit with large temperature coefficient is applicable to high-frequency receiving devices.

摘要翻译： 振荡器单元被配置为使得控制器使用的合成器的频率调节单元小于连接到变频器的输出侧的解调器的频率变化跟踪能力。 该结构成功地组合了振荡器单元的温度补偿控制和高频接收装置的接收处理。 因此，具有高温度系数的振荡器单元适用于高频接收装置。

公开(公告)号：US08183915B2

公开(公告)日：2012-05-22

申请号：US13151777

申请日：2011-06-02

申请人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

发明人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

IPC分类号： H03D3/28

CPC分类号： H03L7/183 ,  H03L1/022

摘要： An oscillator unit is configured such that a frequency adjustment unit of a synthesizer used by a controller is smaller than a frequency variation tracking capability of a demodulator connected to an output side of a frequency converter. This structure successfully combines the temperature compensation control of an oscillator unit and the receiving process of a high-frequency receiving device. Accordingly, an oscillator unit with large temperature coefficient is applicable to high-frequency receiving devices.

摘要翻译： 振荡器单元被配置为使得控制器使用的合成器的频率调节单元小于连接到变频器的输出侧的解调器的频率变化跟踪能力。 该结构成功地组合了振荡器单元的温度补偿控制和高频接收装置的接收处理。 因此，具有高温度系数的振荡器单元适用于高频接收装置。

公开(公告)号：US08040178B2

公开(公告)日：2011-10-18

申请号：US12671340

申请日：2008-07-28

申请人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

发明人： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

IPC分类号： H03D3/28

CPC分类号： H03L7/183 ,  H03L1/022

摘要： An oscillator unit is configured such that a frequency adjustment unit of a synthesizer used by a controller is smaller than a frequency variation tracking capability of a demodulator connected to an output side of a frequency converter. This structure successfully combines the temperature compensation control of an oscillator unit and the receiving process of a high-frequency receiving device. Accordingly, an oscillator unit with large temperature coefficient is applicable to high-frequency receiving devices.

摘要翻译： 振荡器单元被配置为使得控制器使用的合成器的频率调节单元小于连接到变频器的输出侧的解调器的频率变化跟踪能力。 该结构成功地组合了振荡器单元的温度补偿控制和高频接收装置的接收处理。 因此，具有高温度系数的振荡器单元适用于高频接收装置。

公开(公告)号：US20110133798A1

公开(公告)日：2011-06-09

申请号：US13057055

申请日：2009-08-26

申请人： Yasunobu Tsukio ,  Akihiko Namba

发明人： Yasunobu Tsukio ,  Akihiko Namba

IPC分类号： H03L7/06

CPC分类号： H03L7/197 ,  H03J7/065 ,  H03L1/027

摘要： A synthesizer includes: a synthesizer unit that outputs an oscillation signal based on a reference oscillation signal; a temperature detecting unit that detects a temperature; a time variation detecting unit that detects a time variation in frequency of the reference oscillation signal based on a result of temperature detection by the temperature detecting unit; and a control unit that adjusts a frequency of the oscillation signal outputted from the synthesizer unit based on a result of detection by the time variation detecting unit. With such a configuration, frequency compensation control is performed on a transducer having a large temperature coefficient.

摘要翻译： 合成器包括：合成器单元，其基于参考振荡信号输出振荡信号; 温度检测单元，其检测温度; 时间变化检测单元，其基于温度检测单元的温度检测结果来检测基准振荡信号的频率的时间变化; 以及控制单元，其基于时间变化检测单元的检测结果调整从合成器单元输出的振荡信号的频率。 通过这样的结构，对具有大的温度系数的换能器进行频率补偿控制。

公开(公告)号：US20100315138A1

公开(公告)日：2010-12-16

申请号：US12866951

申请日：2009-02-10

申请人： Akihiko Namba ,  Yasunobu Tsukio ,  Susumu Fukushima

发明人： Akihiko Namba ,  Yasunobu Tsukio ,  Susumu Fukushima

IPC分类号： H03L7/08

CPC分类号： H03L7/1976 ,  H03L1/026 ,  H03L1/027 ,  H03L7/197

摘要： A synthesizer of the present invention includes a synthesizer section that generates an oscillation signal based on a reference oscillation signal output from a MEMS resonator and inputs the oscillation signal to a frequency converter; and a control section that adjusts a frequency of the oscillation signal output from the synthesizer section. In frequency adjustment by the control section, when a frequency adjustment unit of the synthesizer section is defined as predetermined value F in which quality of an output signal from the frequency converter is a quality limit threshold value, frequency adjustment unit Δfcont of the synthesizer section is within predetermined value F.

摘要翻译： 本发明的合成器包括：合成器部，其根据从MEMS谐振器输出的基准振荡信号生成振荡信号，并将振荡信号输入到变频器; 以及控制部，调整从合成部输出的振荡信号的频率。 在由控制部进行的频率调整中，当合成部的频率调整部被定义为来自变频器的输出信号的质量为品质限制阈值的规定值F时，合成器的频率调整部＆Dgr; fcont 截面在预定值F内。

公开(公告)号：US20100271088A1

公开(公告)日：2010-10-28

申请号：US12742793

申请日：2008-11-11

申请人： Akihiko Namba ,  Takeshi Fujii ,  Yasunobu Tsukio

发明人： Akihiko Namba ,  Takeshi Fujii ,  Yasunobu Tsukio

IPC分类号： H03L7/08

CPC分类号： H03L1/027 ,  H03L7/1976

摘要： A synthesizer including an oscillator for outputting an oscillation signal based on an output signal from a comparator, a frequency divider for dividing a frequency of an output signal from the oscillator based on control from a controller, and a temperature sensor for detecting an error between a preset frequency and a frequency based on a reference oscillation signal. The comparator compares an output signal from the frequency divider with an output signal from a MEMS oscillator and outputs a signal indicating the comparison result to the oscillator. The controller changes the frequency division ratio of the frequency divider based on an output signal from the temperature sensor and changes the frequency division ratio in a state in which the frequency division ratio is kept at the past value. Thus, phase noise deterioration in the synthesizer can be suppressed.

摘要翻译： 一种合成器，包括：振荡器，用于基于来自比较器的输出信号输出振荡信号;分频器，用于根据来自控制器的控制来分频来自振荡器的输出信号的频率;以及温度传感器，用于检测 预设频率和基于参考振荡信号的频率。 比较器将来自分频器的输出信号与来自MEMS振荡器的输出信号进行比较，并向振荡器输出指示比较结果的信号。 控制器基于来自温度传感器的输出信号来改变分频器的分频比，并且在分频比保持在过去值的状态下改变分频比。 因此，可以抑制合成器中的相位噪声恶化。

公开(公告)号：US07787841B2

公开(公告)日：2010-08-31

申请号：US11573956

申请日：2006-06-05

申请人： Yasunobu Tsukio ,  Hiroaki Ozeki

发明人： Yasunobu Tsukio ,  Hiroaki Ozeki

IPC分类号： H04B17/02

CPC分类号： H04B7/0871 ,  H04B7/0842 ,  H04B7/0851 ,  H04B7/0874

摘要： The demodulator in the receiving module of the invention supplies a signal produced based on a signal level detected by a first detector to a second amplifier as an amplification degree adjustment signal. With this arrangement, when a second receiver works, an AGC voltage supplied to the second receiver is already close to an ultimately converging certain value. The AGC voltage supplied to the second receiver is thus stabilized in its value, from the value close to the ultimately converging certain value to the certain value. Accordingly, a time period required from the second receiver starts working until the AGC voltage supplied to second amplifier ultimately converges into the certain value is shortened.

摘要翻译： 本发明的接收模块中的解调器将基于由第一检测器检测的信号电平产生的信号作为放大度调整信号提供给第二放大器。 利用这种布置，当第二接收器工作时，提供给第二接收器的AGC电压已经接近最终收敛到某一值。 因此，提供给第二接收机的AGC电压从接近最终收敛到特定值的值稳定在其值。 因此，第二接收器所需的时间段开始工作，直到提供给第二放大器的AGC电压最终收敛到该特定值。