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1. 发明授权

US06870446B2 High frequency filter 有权
标题翻译：高频滤波器
公开(公告)号：US06870446B2
公开(公告)日：2005-03-22
申请号：US10252105
申请日：2002-09-23
申请人： Ryoichi Ohara , Kazuhide Abe , Takashi Kawakubo , Hiroshi Yoshida , Hiroshi Tsurumi , Ryuichi Fujimoto
发明人： Ryoichi Ohara , Kazuhide Abe , Takashi Kawakubo , Hiroshi Yoshida , Hiroshi Tsurumi , Ryuichi Fujimoto
IPC分类号： H03H9/00 , H03H9/54 , H03H9/58 , H03H9/60
CPC分类号： H03H9/605 , H03H9/0095 , H03H9/542 , H03H9/581 , H03H2009/02196
摘要： A high frequency filter comprises thin film piezoelectric resonators connected in series between the input/output nodes, thin film piezoelectric resonators connected in parallel between the input/output nodes and a variable voltage circuit adapted to change the voltage applied to at least either the thin film piezoelectric resonators connected in series or the thin film piezoelectric resonators connected in parallel. The resonance characteristic of at least either the thin film piezoelectric resonators connected in series or the thin film piezoelectric resonator connected in parallel is shifted by changing the voltage applied by the variable voltage circuit to change the pass characteristic of the filter.
摘要翻译：高频滤波器包括串联连接在输入/输出节点之间的薄膜压电谐振器，并联连接在输入/输出节点之间的薄膜压电谐振器和可变电压电路，可变电压电路适于改变施加到至少薄膜的电压串联连接的压电谐振器或并联连接的薄膜压电谐振器。串联连接的薄膜压电谐振器或并联连接的薄膜压电谐振器中的至少一个的谐振特性通过改变由可变电压电路施加的电压来改变滤波器的通过特性而被移位。

2. 发明授权

US06809604B2 Voltage control oscillator having a ferroelectric thin film perovskite single crystal resonator 失效
标题翻译：具有铁电薄膜钙钛矿单晶谐振器的电压控制振荡器
公开(公告)号：US06809604B2
公开(公告)日：2004-10-26
申请号：US10397876
申请日：2003-03-27
申请人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Tsurumi , Hiroshi Yoshida , Ryuichi Fujimoto
发明人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Tsurumi , Hiroshi Yoshida , Ryuichi Fujimoto
IPC分类号： H03B532
CPC分类号： H03H9/173 , H03H9/0095 , H03H9/545 , H03H9/562 , H03H9/564 , H03H9/566 , H03H9/581 , H03H9/585 , H03H9/60 , H03H2009/02196
摘要： To provide a miniaturized voltage controlled oscillator which can oscillate simultaneously a plurality of frequencies and has high stability of frequency, an excellent low phase noise, small variation per hour, and a wide frequency variable range. A thin film bulk acoustic wave resonator using single crystal ferroelectric material equal to or smaller than 10 &mgr;m in thickness whose direction of polarization is aligned to the direction of thickness is utilized as the piezoelectric member. The voltage controlled oscillator having large changing rate of the oscillation frequency of 0.01%/V or more and an extremely small phase noise is provided by changing the voltage applied to the electrodes.
摘要翻译：为了提供能够同时振荡多个频率并且具有高的频率稳定性，优异的低相位噪声，小时变化小和宽频率可变范围的微型压控振荡器.1。一种使用单晶的薄膜体声波谐振器作为压电部件，利用等于或小于10μm厚的偏振方向与厚度方向对准的铁电材料。通过改变施加到电极上的电压，提供振荡频率变化率大于0.01％/ V以上且极小相位噪声的压控振荡器。

3. 发明申请

US20050059375A1 Voltage controlled oscillator, frequency synthesizer and communication apparatus 失效
标题翻译：压控振荡器，频率合成器和通讯装置
公开(公告)号：US20050059375A1
公开(公告)日：2005-03-17
申请号：US10890998
申请日：2004-07-15
申请人： Kazuhide Abe , Mayumi Morizuka , Ryoichi Ohara , Kenya Sano , Naoko Yanase , Takaaki Yasumoto , Tadahiro Sasaki , Kazuhiko Itaya , Takashi Kawakubo , Hiroshi Yoshida , Ryuichi Fujimoto , Keiichi Yamaguchi , Nobuyuki Itoh , Tooru Kozu , Takeshi Ookubo
发明人： Kazuhide Abe , Mayumi Morizuka , Ryoichi Ohara , Kenya Sano , Naoko Yanase , Takaaki Yasumoto , Tadahiro Sasaki , Kazuhiko Itaya , Takashi Kawakubo , Hiroshi Yoshida , Ryuichi Fujimoto , Keiichi Yamaguchi , Nobuyuki Itoh , Tooru Kozu , Takeshi Ookubo
IPC分类号： H03K3/354 , H03B1/00 , H03B5/30 , H03B5/32 , H03H9/17 , H03L7/08 , H03L7/089 , H03L7/099 , H03L7/10 , H03L7/113 , H03L7/18 , H03L7/187 , H03L7/199 , H04B1/06 , H04B7/00 , H04B17/00
CPC分类号： H03L7/099 , H03B5/326 , H03B2200/0012 , H03B2201/0208 , H03B2201/025 , H03L7/0891 , H03L7/10 , H03L7/113 , H03L7/18 , H03L7/199 , H03L2207/06
摘要： A voltage controlled oscillator includes a resonator configured to resonate with an initial oscillation frequency during starting period of oscillation and a steady oscillation frequency during a steady state oscillation. The resonator includes a film bulk acoustic resonator having a series resonance frequency higher than the steady oscillation frequency. A negative resistance circuit configured to drive the resonator, has a positive increment for reactance in the steady state oscillation compared with reactance in the starting period.
摘要翻译：压控振荡器包括谐振器，其构造成在振荡的起始周期期间与初始振荡频率谐振，并且在稳态振荡期间具有稳定的振荡频率。谐振器包括具有高于稳定振荡频率的串联谐振频率的膜体声波谐振器。配置为驱动谐振器的负电阻电路与起动周期中的电抗相比，在稳态振荡中具有正增量。

4. 发明授权

US07221920B2 Voltage controlled oscillator, frequency synthesizer and communication apparatus 失效
标题翻译：压控振荡器，频率合成器和通讯装置
公开(公告)号：US07221920B2
公开(公告)日：2007-05-22
申请号：US10890998
申请日：2004-07-15
申请人： Kazuhide Abe , Mayumi Morizuka , Ryoichi Ohara , Kenya Sano , Naoko Yanase , Takaaki Yasumoto , Tadahiro Sasaki , Kazuhiko Itaya , Takashi Kawakubo , Hiroshi Yoshida , Ryuichi Fujimoto , Keiichi Yamaguchi , Nobuyuki Itoh , Tooru Kozu , Takeshi Ookubo
发明人： Kazuhide Abe , Mayumi Morizuka , Ryoichi Ohara , Kenya Sano , Naoko Yanase , Takaaki Yasumoto , Tadahiro Sasaki , Kazuhiko Itaya , Takashi Kawakubo , Hiroshi Yoshida , Ryuichi Fujimoto , Keiichi Yamaguchi , Nobuyuki Itoh , Tooru Kozu , Takeshi Ookubo
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03L7/099 , H03B5/326 , H03B2200/0012 , H03B2201/0208 , H03B2201/025 , H03L7/0891 , H03L7/10 , H03L7/113 , H03L7/18 , H03L7/199 , H03L2207/06
摘要： A voltage controlled oscillator includes a resonator configured to resonate with an initial oscillation frequency during starting period of oscillation and a steady oscillation frequency during a steady state oscillation. The resonator includes a film bulk acoustic resonator having a series resonance frequency higher than the steady oscillation frequency. A negative resistance circuit configured to drive the resonator, has a positive increment for reactance in the steady state oscillation compared with reactance in the starting period.
摘要翻译：压控振荡器包括谐振器，其构造成在振荡的起始时段期间与初始振荡频率谐振，并且在稳态振荡期间具有稳定的振荡频率。谐振器包括具有高于稳定振荡频率的串联谐振频率的膜体声波谐振器。配置为驱动谐振器的负电阻电路与起动周期中的电抗相比，在稳态振荡中具有正增量。

5. 发明授权

US07135940B2 Tunable filter and portable telephone 失效
标题翻译：可调滤波器和便携式电话
公开(公告)号：US07135940B2
公开(公告)日：2006-11-14
申请号：US11039872
申请日：2005-01-24
申请人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Yoshida , Hiroshi Tsurumi
发明人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Yoshida , Hiroshi Tsurumi
IPC分类号： H03H21/00 , H03H9/54 , H03H9/64
CPC分类号： H03J3/08 , H03H9/542 , H03H9/605 , H03H2210/012 , H03H2210/015 , H03J1/0008
摘要： A tunable filter has a plurality of variable capacitors and a plurality of inductor elements, each being formed on a common substrate, a filter circuit formed by using at least a portion of the plurality of variable capacitors and a portion of the plurality of inductor elements, a monitor circuit formed by using at least a portion of the plurality of variable capacitors and a portion of the plurality of inductor elements, a detecting circuit which detects a prescribed circuit constant of the monitor circuit, a storage which stores information relating to a reference circuit constant of the monitor circuit, and a capacitance control circuit which controls capacitance of the variable capacitors in the monitor circuit and capacitance of the variable capacitors in the filter circuit, based on a result detected by the detecting circuit and information stored in the storage.
摘要翻译：可调谐滤波器具有多个可变电容器和多个电感器元件，每个电感器元件形成在公共基板上，通过使用多个可变电容器的至少一部分和多个电感器元件的一部分形成的滤波器电路，通过使用多个可变电容器的至少一部分和多个电感器元件的一部分形成的监视电路，检测监视电路的规定电路常数的检测电路，存储与参考电路有关的信息的存储器基于由检测电路检测的结果和存储在存储器中的信息，控制监视电路中的可变电容器的电容和滤波器电路中的可变电容器的电容的电容控制电路。

6. 发明申请

US20050212612A1 Tunable filter and portable telephone 失效
标题翻译：可调滤波器和便携式电话
公开(公告)号：US20050212612A1
公开(公告)日：2005-09-29
申请号：US11039872
申请日：2005-01-24
申请人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Yoshida , Hiroshi Tsurumi
发明人： Takashi Kawakubo , Ryoichi Ohara , Kazuhide Abe , Hiroshi Yoshida , Hiroshi Tsurumi
IPC分类号： H01G7/06 , H03B5/00 , H03H7/075 , H03H7/12 , H03H9/00 , H03H9/17 , H03H9/46 , H03H9/54 , H03H9/58 , H03H9/60 , H03H9/64 , H03H11/04 , H03J1/00 , H03J3/08
CPC分类号： H03J3/08 , H03H9/542 , H03H9/605 , H03H2210/012 , H03H2210/015 , H03J1/0008
摘要： A tunable filter has a plurality of variable capacitors and a plurality of inductor elements, each being formed on a common substrate, a filter circuit formed by using at least a portion of the plurality of variable capacitors and a portion of the plurality of inductor elements, a monitor circuit formed by using at least a portion of the plurality of variable capacitors and a portion of the plurality of inductor elements, a detecting circuit which detects a prescribed circuit constant of the monitor circuit, a storage which stores information relating to a reference circuit constant of the monitor circuit, and a capacitance control circuit which controls capacitance of the variable capacitors in the monitor circuit and capacitance of the variable capacitors in the filter circuit, based on a result detected by the detecting circuit and information stored in the storage.
摘要翻译：可调谐滤波器具有多个可变电容器和多个电感器元件，每个电感器元件形成在公共基板上，通过使用多个可变电容器的至少一部分和多个电感器元件的一部分形成的滤波器电路，通过使用多个可变电容器的至少一部分和多个电感器元件的一部分形成的监视电路，检测监视电路的规定电路常数的检测电路，存储与参考电路有关的信息的存储器基于由检测电路检测的结果和存储在存储器中的信息，控制监视电路中的可变电容器的电容和滤波器电路中的可变电容器的电容的电容控制电路。

7. 发明申请

US20050280476A1 Filter control apparatus and filter system 审中-公开
标题翻译：过滤器控制装置和过滤系统
公开(公告)号：US20050280476A1
公开(公告)日：2005-12-22
申请号：US11151343
申请日：2005-06-14
申请人： Kazuhide Abe , Michihiko Nishigaki , Toshihiko Nagano , Ryoichi Ohara , Hiroshi Yoshida , Hiroshi Tsurumi , Takashi Kawakubo
发明人： Kazuhide Abe , Michihiko Nishigaki , Toshihiko Nagano , Ryoichi Ohara , Hiroshi Yoshida , Hiroshi Tsurumi , Takashi Kawakubo
IPC分类号： H03B21/01 , H03H7/01 , H03L7/00 , H03L7/07 , H03L7/081 , H03L7/099
CPC分类号： H03H7/0161 , H03B21/01 , H03L7/07 , H03L7/0805 , H03L7/0812 , H03L7/099 , H03L7/0995
摘要： A filter control apparatus which controls a frequency variable filter capable of changing a transmission band width by controlling a capacitance of at least a portion of a plurality of voltage variable capacitors connected in series and parallel to a resonator has an input unit, and a filter control circuit. The input unit inputs a reference signal with a predetermined reference frequency to the frequency variable filter. The filter control circuit controls a center frequency and the transmission band width of the frequency variable filter by detecting a phase change generated when the reference signal passes through the frequency variable filter and by variably controlling the capacitance of at least a portion of the voltage variable capacitor by using a direct voltage in proportion to the phase change.
摘要翻译：控制能够通过控制串联并联到谐振器的多个电压可变电容器的至少一部分的电容来改变传输带宽的滤波器控制装置具有输入单元和滤波器控制电路。输入单元将具有预定参考频率的参考信号输入到频率可变滤波器。滤波器控制电路通过检测当参考信号通过频率可变滤波器时产生的相位变化并且通过可变地控制电压可变电容器的至少一部分的电容来控制频率可变滤波器的中心频率和传输带宽通过使用与相变成比例的直流电压。

8. 发明授权

US06498929B1 Receiver having DC offset decreasing function and communication system using the same 失效
标题翻译：具有DC偏移减小功能的接收机和使用该功能的通信系统
公开(公告)号：US06498929B1
公开(公告)日：2002-12-24
申请号：US08880679
申请日：1997-06-23
申请人： Hiroshi Tsurumi , Hiroshi Yoshida , Tetsuro Itakura , Takafumi Yamaji , Akira Yasuda , Takashi Ueno , Hiroshi Tanimoto , Ryuichi Fujimoto , Hiroshi Horiguchi
发明人： Hiroshi Tsurumi , Hiroshi Yoshida , Tetsuro Itakura , Takafumi Yamaji , Akira Yasuda , Takashi Ueno , Hiroshi Tanimoto , Ryuichi Fujimoto , Hiroshi Horiguchi
IPC分类号： H04B716
CPC分类号： H03D3/008 , H03G3/3052 , H04B1/30
摘要： A receiver having a function of a direct current offset, and including a receiving section for receiving a radio frequency signal, an analog signal processing section for amplifying, band-converting and frequency-converting an analog signal inputted from the receiving section, and an AD converting section for converting an output of the analog signal processing section from an analog signal to a digital signal. Also included is a digital signal processing section for processing the digital signal converted by the DC converting section. The receiver further includes an offset detecting element, provided in the digital signal processing section, for detecting a direct current offset signal produced in the receiving section or a frequency converting section, an offset holding element, provided in the digital signal processing section, for holding the direct current offset signal detected by the offset detecting element, a DA converting section for converting the direct current offset signal detected by the digital signal processing section into an analog signal, and a first offset correcting element, provided in the analog signal processing section, for correcting the analog signal on the basis of the direct current offset signal converted by the DA converting section into the analog signal.
摘要翻译：具有直流偏移功能的接收机，包括用于接收射频信号的接收部分，用于放大从接收部分输入的模拟信号的频带转换和频率转换的模拟信号处理部分，以及AD 转换部分，用于将模拟信号处理部分的输出从模拟信号转换成数字信号。还包括用于处理由DC转换部分转换的数字信号的数字信号处理部分。接收机还包括偏移检测元件，设置在数字信号处理部分中，用于检测在数字信号处理部分中设置的接收部分或频率转换部分产生的直流偏移信号，偏移保持元件，用于保持由偏移检测元件检测的直流偏移信号，用于将由数字信号处理部分检测的直流偏移信号转换为模拟信号的DA转换部分和设置在模拟信号处理部分中的第一偏移校正元件，用于基于由DA转换部分转换成的模拟信号的直流偏移信号来校正模拟信号。

9. 发明授权

US07937056B2 Variable capacitance device and portable phone 失效
标题翻译：可变电容设备和便携式电话
公开(公告)号：US07937056B2
公开(公告)日：2011-05-03
申请号：US11755107
申请日：2007-05-30
申请人： Kazuhiko Itaya , Hiroshi Yoshida , Takashi Kawakubo
发明人： Kazuhiko Itaya , Hiroshi Yoshida , Takashi Kawakubo
IPC分类号： H04B1/18
CPC分类号： H01G5/18
摘要： A variable capacitance device has a piezoelectric driving part, a movable electrode, a fixed electrode, a dielectric film and a driving control unit. The piezoelectric driving part has a piezoelectric film, an upper electrode disposed on a top surface of the piezoelectric film, a lower electrode disposed on an undersurface of the piezoelectric film and electrode slits which separate the upper electrode and the lower electrode into two, respectively. The movable electrode is provided via the electrode slits at one end of the piezoelectric driving part. The fixed electrode is disposed opposite to the movable electrode via a gap. The dielectric film is disposed opposite to the movable electrode via the gap and provided on the fixed electrode. The driving control unit adjusts a distance between the movable electrode and the fixed electrode to reduce a fluctuation of a predetermined capacitance of a variable capacitor formed between the variable electrode and the fixed electrode.
摘要翻译：可变电容器件具有压电驱动部，可动电极，固定电极，电介质膜和驱动控制部。压电驱动部分具有压电膜，设置在压电膜的顶表面上的上电极，设置在压电膜的下表面上的下电极以及分别将上电极和下电极分成两部分的电极狭缝。可动电极通过电极狭缝设置在压电驱动部分的一端。固定电极通过间隙与可动电极相对设置。电介质膜经由间隙与可动电极相对设置，设置在固定电极上。驱动控制单元调整可动电极和固定电极之间的距离，以减小形成在可变电极和固定电极之间的可变电容器的预定电容的波动。

10. 发明申请

US20070281646A1 VARIABLE CAPACITANCE DEVICE AND PORTABLE PHONE 失效
标题翻译：可变电容器和便携式电话
公开(公告)号：US20070281646A1
公开(公告)日：2007-12-06
申请号：US11755107
申请日：2007-05-30
申请人： Kazuhiko Itaya , Hiroshi Yoshida , Takashi Kawakubo
发明人： Kazuhiko Itaya , Hiroshi Yoshida , Takashi Kawakubo
IPC分类号： H04B1/26
CPC分类号： H01G5/18
摘要： A variable capacitance device has a piezoelectric driving part, a movable electrode, a fixed electrode, a dielectric film and a driving control unit. The piezoelectric driving part has a piezoelectric film, an upper electrode disposed on a top surface of the piezoelectric film, a lower electrode disposed on an undersurface of the piezoelectric film and electrode slits which separate the upper electrode and the lower electrode into two, respectively. The movable electrode is provided via the electrode slits at one end of the piezoelectric driving part. The fixed electrode is disposed opposite to the movable electrode via a gap. The dielectric film is disposed opposite to the movable electrode via the gap and provided on the fixed electrode. The driving control unit adjusts a distance between the movable electrode and the fixed electrode to reduce a fluctuation of a predetermined capacitance of a variable capacitor formed between the variable electrode and the fixed electrode.
摘要翻译：可变电容器件具有压电驱动部，可动电极，固定电极，电介质膜和驱动控制部。压电驱动部分具有压电膜，设置在压电膜的顶表面上的上电极，设置在压电膜的下表面上的下电极以及分别将上电极和下电极分成两部分的电极狭缝。可动电极通过电极狭缝设置在压电驱动部分的一端。固定电极通过间隙与可动电极相对设置。电介质膜经由间隙与可动电极相对设置，设置在固定电极上。驱动控制单元调整可动电极和固定电极之间的距离，以减小形成在可变电极和固定电极之间的可变电容器的预定电容的波动。

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