公开(公告)号：US20110080223A1

公开(公告)日：2011-04-07

申请号：US12924515

申请日：2010-09-29

申请人： Junichiro Yamakawa ,  Kazuo Akaike ,  Mikio Takano ,  Hiroshi Hoshigami ,  Kenji Kawahata ,  Kietsu Saito ,  Yasushi Yamamoto ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Susumu Yoshimoto

发明人： Junichiro Yamakawa ,  Kazuo Akaike ,  Mikio Takano ,  Hiroshi Hoshigami ,  Kenji Kawahata ,  Kietsu Saito ,  Yasushi Yamamoto ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Susumu Yoshimoto

IPC分类号： H03B5/12

CPC分类号： H03B5/1243 ,  H03B5/1203 ,  H03B2200/0008

摘要： There is provided a voltage controlled oscillator that is compact and can be manufactured at low cost. The voltage controlled oscillator is structured to include: a resonance part including a variable capacitance element and an inductance element, the variable capacitance element having a capacitance that varies according to a control voltage for frequency control input from an external part, and a series resonant frequency of the resonance part being adjusted according to the capacitance; an amplifying part amplifying a frequency signal from the resonance part; and a feedback part including a capacitance element for feedback and feeding the frequency signal amplified by the amplifying part back to the resonance part to form an oscillation loop together with the amplifying part and the resonance part, wherein the amplifying part is provided in an integrated circuit chip, and the resonance part and the capacitance element for feedback are formed as circuit components separate from the integrated circuit chip. The circuit components are selected according to an oscillation frequency.

摘要翻译： 提供了一种紧凑的压控振荡器，并且可以以低成本制造。 压控振荡器被构造为包括：包括可变电容元件和电感元件的谐振部分，所述可变电容元件具有根据用于来自外部部分的频率控制输入的控制电压而变化的电容和串联谐振频率 的共振部分根据电容进行调节; 放大部分，用于放大来自谐振部分的频率信号; 以及反馈部分，包括用于反馈的电容元件，并将由放大部分放大的频率信号馈送到谐振部分，以与放大部分和谐振部分一起形成振荡环路，其中放大部分设置在集成电路中 芯片，并且用于反馈的谐振部分和电容元件形成为与集成电路芯片分离的电路部件。 根据振荡频率选择电路元件。

公开(公告)号：US08547183B2

公开(公告)日：2013-10-01

申请号：US12924515

申请日：2010-09-29

申请人： Junichiro Yamakawa ,  Kazuo Akaike ,  Mikio Takano ,  Hiroshi Hoshigami ,  Kenji Kawahata ,  Kietsu Saito ,  Yasushi Yamamoto ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Susumu Yoshimoto

发明人： Junichiro Yamakawa ,  Kazuo Akaike ,  Mikio Takano ,  Hiroshi Hoshigami ,  Kenji Kawahata ,  Kietsu Saito ,  Yasushi Yamamoto ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Susumu Yoshimoto

IPC分类号： H03B5/08

CPC分类号： H03B5/1243 ,  H03B5/1203 ,  H03B2200/0008

摘要： There is provided a voltage controlled oscillator that is compact and can be manufactured at low cost. The voltage controlled oscillator is structured to include: a resonance part including a variable capacitance element and an inductance element, the variable capacitance element having a capacitance that varies according to a control voltage for frequency control input from an external part, and a series resonant frequency of the resonance part being adjusted according to the capacitance; an amplifying part amplifying a frequency signal from the resonance part; and a feedback part including a capacitance element for feedback and feeding the frequency signal amplified by the amplifying part back to the resonance part to form an oscillation loop together with the amplifying part and the resonance part, wherein the amplifying part is provided in an integrated circuit chip, and the resonance part and the capacitance element for feedback are formed as circuit components separate from the integrated circuit chip. The circuit components are selected according to an oscillation frequency.

摘要翻译： 提供了一种紧凑的压控振荡器，并且可以以低成本制造。 压控振荡器被构造为包括：包括可变电容元件和电感元件的谐振部分，所述可变电容元件具有根据用于来自外部部分的频率控制输入的控制电压而变化的电容和串联谐振频率 的共振部分根据电容进行调节; 放大部分，用于放大来自谐振部分的频率信号; 以及反馈部，其包括用于反馈的电容元件，并且将由放大部放大的频率信号馈送到谐振部，以与放大部和谐振部一起形成振荡环，其中放大部设置在集成电路中 芯片，并且用于反馈的谐振部分和电容元件形成为与集成电路芯片分离的电路部件。 根据振荡频率选择电路元件。

公开(公告)号：US08416028B2

公开(公告)日：2013-04-09

申请号：US12924467

申请日：2010-09-28

申请人： Junichiro Yamakawa ,  Kazuo Akaike ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Mikio Takano ,  Yasushi Yamamoto ,  Susumu Yoshimoto

发明人： Junichiro Yamakawa ,  Kazuo Akaike ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Mikio Takano ,  Yasushi Yamamoto ,  Susumu Yoshimoto

IPC分类号： H03B5/01

CPC分类号： H03B5/1243 ,  H03B5/1203 ,  H03B2200/0008

摘要： To provide a voltage controlled oscillator having small size and capable of obtaining a low phase noise characteristic over a large span of adjustable range of frequency. A quartz crystal having a characteristic (dielectric loss tangent: tan δ) better than that of fluorocarbon resin, LTCC or the like conventionally used as a substrate of a resonance part, and on which a fine pattern of metal film can be formed through a photolithography method, is used as a quartz-crystal substrate, and a conductive line is formed on the quartz-crystal substrate to form an inductance element in the resonance part. Accordingly, since the resonance part having a high Q value can be formed, it is possible to obtain a voltage controlled oscillator having small size and low loss over a wide frequency range.

摘要翻译： 提供具有小尺寸并且能够在可调整频率范围内获得低相位噪声特性的压控振荡器。 具有比通常用作共振部件的基板的氟碳树脂，LTCC等的特性（介电损耗角正切：tanδ）更好的石英晶体，并且可以通过光刻法形成金属膜的精细图案 方法用作石英衬底，并且在石英衬底上形成导线以在谐振部件中形成电感元件。 因此，由于可以形成具有高Q值的谐振部分，所以可以在宽的频率范围内获得具有小尺寸和低损耗的压控振荡器。

公开(公告)号：US20110080226A1

公开(公告)日：2011-04-07

申请号：US12924467

申请日：2010-09-28

申请人： Junichiro Yamakawa ,  Kazuo Akaike ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Mikio Takano ,  Yasushi Yamamoto ,  Susumu Yoshimoto

发明人： Junichiro Yamakawa ,  Kazuo Akaike ,  Tatsunori Onzuka ,  Toshimasa Tsuda ,  Mikio Takano ,  Yasushi Yamamoto ,  Susumu Yoshimoto

IPC分类号： H03B5/18

CPC分类号： H03B5/1243 ,  H03B5/1203 ,  H03B2200/0008

摘要： To provide a voltage controlled oscillator having small size and capable of obtaining a low phase noise characteristic over a large span of adjustable range of frequency. A quartz crystal having a characteristic (dielectric loss tangent: tan δ) better than that of fluorocarbon resin, LTCC or the like conventionally used as a substrate of a resonance part 1, and on which a fine pattern of metal film can be formed through a photolithography method, is used as a quartz-crystal substrate 10, and a conductive line is formed on the quartz-crystal substrate 10 to form an inductance element 11 in the resonance part 1. Accordingly, since the resonance part 1 having a high Q value can be formed, it is possible to obtain a voltage controlled oscillator having small size and low loss over a wide frequency band.

摘要翻译： 提供具有小尺寸并且能够在可调整频率范围内获得低相位噪声特性的压控振荡器。 具有通常用作共振部1的基板的氟碳树脂，LTCC等的特性（介电损耗角正切：tanδ）的石英晶体，并且可以通过以下方式形成金属膜的微细图案 光刻法用作石英基板10，在石英基板10上形成导线，在共振部1中形成电感元件11.因此，由于具有高Q值的共振部1 可以形成，可以获得在宽频带上具有小尺寸和低损耗的压控振荡器。

公开(公告)号：US5949307A

公开(公告)日：1999-09-07

申请号：US80721

申请日：1998-05-21

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/02771 ,  H03H9/02748 ,  H03H9/6436 ,  H03H9/6443 ,  H03H9/6453 ,  H03H9/6479 ,  H03H9/1452 ,  H03H9/14532

摘要： A surface acoustic wave device includes first and second longitudinal mode resonators. The first longitudinal mode resonator has two resonance modes, i.e., a longitudinal mode distributed in the same direction as a propagating direction of a surface acoustic wave (SAW) and a transverse mode distributed in a direction perpendicular to the propagating direction of the SAW. The second longitudinal mode resonator is arranged adjacent to the first resonator in a direction perpendicular to the propagating direction of the SAW, and has two resonance modes, i.e., a longitudinal mode and a transverse mode. The resonance modes of the second longitudinal mode resonator are acoustically coupled to the resonance modes of the first longitudinal mode resonator. The first longitudinal mode resonator has an output InterDigital Transducer (IDT) having an interdigital electrode to excite a SAW. The second longitudinal mode resonator has an input IDT having an interdigital electrode to receive the SAW from the output IDT. The interdigital electrodes of the input and output IDTs are arranged adjacent to each other in a direction perpendicular to the propagating direction of the SAW and to partially overlap each other in the same direction as the propagating direction.

摘要翻译： 表面声波装置包括第一和第二纵模谐振器。 第一纵模谐振器具有两个共振模式，即纵向模式分布在与SAW的传播方向垂直的方向上分布的表面声波（SAW）和横向模式的传播方向相同的方向上。 第二纵模谐振器在与SAW的传播方向垂直的方向上与第一谐振器相邻地布置，并且具有两种谐振模式，即纵向模式和横向模式。 第二纵模谐振器的谐振模式与第一纵模谐振器的谐振模式声学耦合。 第一纵模式谐振器具有输出的数字数字转换器（IDT），其具有用于激发SAW的叉指电极。 第二纵模谐振器具有输入IDT，其具有用于从输出IDT接收SAW的叉指电极。 输入输出IDT的叉指电极在与SAW的传播方向垂直的方向上彼此相邻布置，并且在与传播方向相同的方向上部分地彼此重叠。

公开(公告)号：US6040651A

公开(公告)日：2000-03-21

申请号：US359114

申请日：1999-07-23

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/1452 ,  H03H9/6436

摘要： A surface acoustic wave device includes a piezoelectric substrate, an input first interdigital electrode, and an output second interdigital electrode. The input first interdigital electrode is formed on the piezoelectric substrate. The output second interdigital electrode is formed on the piezoelectric substrate to be adjacent to the first interdigital electrode. A ratio of an overlap width to an aperture width of the first interdigital electrode and a ratio of an overlap width to an aperture width of the second interdigital electrode are set to different values, so that a transverse secondary mode is suppressed with one of the first and second interdigital electrodes while a transverse quaternary mode is suppressed with the other of the first and second interdigital electrodes.

摘要翻译： 表面声波装置包括压电基板，输入第一叉指电极和输出第二叉指电极。 输入的第一叉指电极形成在压电基板上。 输出第二叉指电极形成在压电基板上以与第一叉指电极相邻。 将第一交叉指型电极的重叠宽度与开口宽度的比率与第二交叉指型电极的重叠宽度与开口宽度的比率设定为不同的值，从而通过第一 和第二叉指电极，而横向四元模式被第一和第二叉指电极中的另一个抑制。

公开(公告)号：US6005326A

公开(公告)日：1999-12-21

申请号：US948060

申请日：1997-10-09

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64 ,  H01L41/047

CPC分类号： H03H9/1452 ,  H03H9/6436

摘要： A surface acoustic wave device includes a piezoelectric substrate, an input first interdigital electrode, and an output second interdigital electrode. The input first interdigital electrode is formed on the piezoelectric substrate. The output second interdigital electrode is formed on the piezoelectric substrate to be adjacent to the first interdigital electrode. A ratio of an overlap width to an aperture width of the first interdigital electrode and a ratio of an overlap width to an aperture width of the second interdigital electrode are set to different values, so that a transverse secondary mode is suppressed with one of the first and second interdigital electrodes while a transverse quaternary mode is suppressed with the other of the first and second interdigital electrodes.

公开(公告)号：US06373167B1

公开(公告)日：2002-04-16

申请号：US09706745

申请日：2000-11-07

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H01L4104

CPC分类号： H03H9/02677 ,  H03H9/02622 ,  H03H9/02716 ,  H03H9/02779 ,  H03H9/02795 ,  H03H9/6433 ,  H03H9/6436

摘要： The present invention disclosed a SAW filter in which unnecessary space on a chip can be reduced in comparison with the prior art, and in which a smaller chip can be realized. Because oblique step shaped reflection surfaces are provided in order to reflect the SAW, a smaller SAW filter than that used in the prior art can be realized.

摘要翻译： 本发明公开了一种SAW滤波器，其与现有技术相比可以减少芯片上的不必要的空间，并且可以实现更小的芯片。 由于为了反射SAW而设置倾斜的台阶形反射面，因此可以实现比现有技术中使用的SAW滤波器更小的SAW滤波器。

公开(公告)号：US5856720A

公开(公告)日：1999-01-05

申请号：US813100

申请日：1997-03-07

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H03H9/145 ,  H03H9/25 ,  H01L41/08

CPC分类号： H03H9/25

摘要： In a resonator type surface acoustic wave filter, a fundamental mode of a mode to distribute in a direction perpendicular to propagating direction of a surface acoustic wave (hereinafter referred to as transverse mode) becomes a primary response, whereas a transverse secondary mode becomes spurious. In case of the surface acoustic wave device formed on a piezoelectric substrate having smaller electromechanical coupling factor of a quartz substrate or so forth, it is impossible to obtain sufficient restriction of the second mode spurious. This problem is solved by canceling electrical potential of transverse secondary mode and whereby restricting excitation with a resonator type surface acoustic device formed on a quartz substrate, in which a configuration of an interdigital electrode is selected to establish a ratio of an overlap width of an electrode finger versus an aperture width in a range greater than or equal to 0.75 to smaller than or equal to 0.85.

摘要翻译： 在谐振器型表面声波滤波器中，在与声表面波的传播方向垂直的方向（以下称为横向模式）上分布的模式的基本模式成为主要响应，而横向二次模式变得虚假。 在表面声波装置形成在具有较小的石英衬底等的机电耦合系数的压电衬底的情况下，不可能获得对第二模式杂散的足够的限制。 该问题是通过消除横向二次模式的电位来解决的，并且由此形成在石英衬底上的谐振器型表面声学装置限制激励，其中选择了指数间电极的构造以确定电极的重叠宽度的比率 手指相对于大于或等于0.75至小于或等于0.85的范围的孔径宽度。

公开(公告)号：US6049260A

公开(公告)日：2000-04-11

申请号：US231657

申请日：1999-01-15

申请人： Susumu Yoshimoto ,  Yasushi Yamamoto

发明人： Susumu Yoshimoto ,  Yasushi Yamamoto

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/6433 ,  H03H9/25

摘要： A surface acoustic wave filter includes IDTs on an input side and on an output side, the Inter Digital Transducers (IDTs) are formed by depositing a thin film made of aluminum and the like on a piezoelectric substrate made of crystal, and disposed on the substrate with a spacing interposed therebetween. The width of each electrode digit of each IDT is 1/4 of the wavelength of the surface acoustic wave during resonance. A reflection coefficient .epsilon. per electrode digit and the total number N of pairs of the electrode digits constituting the IDTs on the input side and on the output side are set to satisfy N.epsilon..gtoreq.0.55. Also, the aperture width W.lambda. of a surface acoustic wave transmission path, the center frequency of the filter f in units of Hertz , and the thickness of the electrode digits H in units of meters, are set to satisfy fH.ltoreq.-17.5W+210.

摘要翻译： 表面声波滤波器包括输入侧和输出侧的IDT，通过将由铝等制成的薄膜沉积在由晶体制成的压电基板上并且设置在基板上而形成数字间转换器（IDT） 间隔开。 每个IDT的每个电极数字的宽度是共振期间声表面波波长的+ E，fra 1/4 + EE。 构成输入侧和输出侧的IDT的电极数对对的每个电极数的反射系数ε和总数N被设定为满足Nε= 0.55。 此外，声表面波传输路径的孔径宽度λλ，以赫兹为单位的滤波器f的中心频率和以米为单位的电极数H的厚度被设置为满足fH≤17.5 W + 210。