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    • 1. 发明授权
    • Acoustic wave filter including first and second multimode filters with different aperture lengths
    • 声波滤波器包括具有不同孔径长度的第一和第二多模滤波器
    • US07986200B2
    • 2011-07-26
    • US12333927
    • 2008-12-12
    • Satoru OnoYasushi Kuroda
    • Satoru OnoYasushi Kuroda
    • H03H9/64
    • H03H9/0085H03H9/14588
    • An acoustic wave filter includes: a first acoustic wave filter having a first group of multimode filters connected, a first unbalanced input node and two first balanced output nodes, a first multimode filter among the first group of multimode filters being connected to the two first balanced output nodes; and a second acoustic wave filter having a second group of multimode filters, a second unbalanced input node and two second balanced output nodes, a second multimode filter among the second group of multimode filters having an aperture length different from that of the first multimode filter and a connection with the two second balanced output nodes, the first and second multimode filters having different pass bands. One of the two first balanced output nodes and one of the two second balanced output nodes are unified, and the other first balanced output node and the other second balanced output node are unified.
    • 声波滤波器包括:具有连接的第一组多模滤波器的第一声波滤波器,第一不平衡输入节点和两个第一平衡输出节点,第一组多模滤波器中的第一多模滤波器连接到两个第一平衡 输出节点; 以及第二声波滤波器,具有第二组多模滤波器,第二不平衡输入节点和两个第二平衡输出节点,第二组多模滤波器中的第二多模滤波器具有不同于第一多模滤波器的孔径长度, 与两个第二平衡输出节点的连接,第一和第二多模滤波器具有不同的通带。 两个第一平衡输出节点之一和两个第二平衡输出节点之一是统一的,另一个第一平衡输出节点和另一个第二平衡输出节点是统一的。
    • 2. 发明申请
    • ACOUSTIC WAVE FILTER
    • 声波滤波器
    • US20090153269A1
    • 2009-06-18
    • US12333927
    • 2008-12-12
    • Satoru OnoYasushi Kuroda
    • Satoru OnoYasushi Kuroda
    • H03H9/64
    • H03H9/0085H03H9/14588
    • An acoustic wave filter includes: a first acoustic wave filter having a first group of multimode filters connected, a first unbalanced input node and two first balanced output nodes, a first multimode filter among the first group of multimode filters being connected to the two first balanced output nodes; and a second acoustic wave filter having a second group of multimode filters, a second unbalanced input node and two second balanced output nodes, a second multimode filter among the second group of multimode filters having an aperture length different from that of the first multimode filter and a connection with the two second balanced output nodes, the first and second multimode filters having different pass bands. One of the two first balanced output nodes and one of the two second balanced output nodes are unified, and the other first balanced output node and the other second balanced output node are unified.
    • 声波滤波器包括:具有连接的第一组多模滤波器的第一声波滤波器,第一不平衡输入节点和两个第一平衡输出节点,第一组多模滤波器中的第一多模滤波器连接到两个第一平衡 输出节点; 以及第二声波滤波器,具有第二组多模滤波器,第二不平衡输入节点和两个第二平衡输出节点,第二组多模滤波器中的第二多模滤波器具有不同于第一多模滤波器的孔径长度, 与两个第二平衡输出节点的连接,第一和第二多模滤波器具有不同的通带。 两个第一平衡输出节点之一和两个第二平衡输出节点之一是统一的,另一个第一平衡输出节点和另一个第二平衡输出节点是统一的。
    • 4. 发明授权
    • Compensated surface acoustic wave filter having a longitudinal mode resonator connected with a second resonator
    • 具有与第二谐振器连接的纵向模式谐振器的补偿表面声波滤波器
    • US06501208B1
    • 2002-12-31
    • US09462483
    • 2000-02-22
    • Yasushi Kuroda
    • Yasushi Kuroda
    • H01L4104
    • H03H9/6436H03H9/14538H03H9/6426
    • A surface acoustic wave filter having a first surface acoustic wave resonator 10 which is a two-port resonator utilizing longitudinal mode coupling and a second surface acoustic wave resonator 20 connected to a series arm of the first surface acoustic wave resonator 10 on a piezoelectric substrate. The duty of the second surface acoustic wave resonator 20 is set to be smaller than the duty of the first surface acoustic wave resonator 10. Consequently the reflectance per electrode finger of the second surface acoustic wave resonator 20 can be smaller than that of the first surface acoustic wave resonator 10. Therefore, even when the effect of the inductance component is added to the characteristics of the second surface acoustic wave resonator 20, the increase of the difference between the resonance frequency fr and the anti-resonance frequency far can be suppressed. Therefore, the filter loss is low at the high frequency side of the pass band of the surface acoustic wave filter, and an excellent attenuation characteristics are obtained in a vicinity of the high frequency side of the pass band.
    • 一种表面声波滤波器,具有第一表面声波谐振器10,其是利用纵模耦合的双端口谐振器,以及在压电基板上连接到第一声表面波谐振器10的串联臂的第二声表面波谐振器20。 第二表面声波谐振器20的占空比被设定为小于第一声表面波谐振器10的占空比。因此,第二声表面波谐振器20的每个电极指的反射率可以小于第一表面声波谐振器20的占空比。 因此,即使当第二声表面波谐振器20的特性增加电感分量的影响时,也可以抑制谐振频率fr与反共振频率之间的差异的增大。 因此,表面声波滤波器的通带的高频侧的滤波器损耗低,在通带的高频侧附近得到良好的衰减特性。
    • 5. 发明授权
    • Surface acoustic wave element with an input/output ground pattern forming capacitance with both the input and output signal patterns
    • 具有输入/输出接地图形的表面声波元件形成具有输入和输出信号图案的电容
    • US06404303B1
    • 2002-06-11
    • US09623461
    • 2000-09-12
    • Yasushi Kuroda
    • Yasushi Kuroda
    • H03H964
    • H03H9/1071H01L2224/16225H01L2924/16195H03H9/0542H03H9/059H03H9/6436
    • Due to flip-chip assembling, a surface acoustic wave device can be miniaturized and improved in high frequency characteristics. Despite that, since a resonant system cannot be formed due to an absence of inductance of bonding wire, there is a problem that an attenuation region cannot be disposed in a frequency band apart from the pass band. In order to solve the problem, ground terminal wired to interdigital electrodes of a two-port surface acoustic wave element is extended facing to facing to both output sides of both input and output signal terminals to form capacitance. Due to a resonant system including the capacitance, in a frequency band apart from a pass band of the surface acoustic wave element an attenuation region is formed. Thereby, a surface acoustic wave device that is flexibly adjustable of frequency characteristics in response to system request, can be miniaturized and is improved in characteristics out of band is provided.
    • 由于倒装芯片组装,所以能够使声表面波装置小型化并且提高高频特性。 尽管如此,由于由于没有接合线的电感而不能形成谐振系统,所以存在衰减区域不能配置在与通带分开的频带内的问题。 为了解决这个问题,连接到双端口声表面波元件的叉指电极的接地端子面向着面向输入和输出信号端子的两个输出侧而形成电容。 由于包括电容的谐振系统,在与表面声波元件的通带分开的频带中形成衰减区域。 由此,响应于系统要求能够灵活调整频率特性的声表面波装置可以小型化,并提供特性带外。
    • 6. 发明授权
    • Surface acoustic wave element having two filters with more IDTs in the lower frequency filter
    • 表面声波元件具有在较低频率滤波器中具有更多IDT的两个滤波器
    • US06366179B1
    • 2002-04-02
    • US09419285
    • 1999-10-15
    • Yasushi Kuroda
    • Yasushi Kuroda
    • H03H972
    • H03H9/6436H03H9/14588H03H9/6469H03H2250/00
    • A surface acoustic wave element, comprising a piezoelectric substrate, a first surface acoustic wave resonant filter having a first IDT group consisting of a conductive film disposed on the piezoelectric substrate to utilizing longitudinal resonance mode coupling, and having a first passband, and a second surface acoustic wave resonant filter having a second IDT group consisting of a conductive film disposed on the piezoelectric substrate to utilizing longitudinal resonance mode coupling, and having a second passband of higher frequency than that of the first passband, wherein a number of IDTs constituting the first IDT group is more than that of the IDTs constituting the second IDT group.
    • 一种表面声波元件,包括压电基片,第一声表面波谐振滤波器,具有第一IDT组,第一IDT组由设置在压电基片上的导电膜组成,以利用纵向共振模耦合,并具有第一通带,第二表面 声波谐振滤波器,具有由布置在压电基板上的导电膜构成的第二IDT组,以利用纵向谐振模式耦合,并且具有比第一通带高的频率的第二通带,其中构成第一IDT的多个IDT 组比构成第二IDT组的IDT的组更多。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR PRODUCING METAL OXIDE PARTICLES
    • 用于生产金属氧化物颗粒的方法和装置
    • US20120328508A1
    • 2012-12-27
    • US13583159
    • 2011-03-07
    • Bunsho OhtaniNoriyuki SugishitaYasushi Kuroda
    • Bunsho OhtaniNoriyuki SugishitaYasushi Kuroda
    • C01B13/22C01G23/04
    • C01B13/22C01G1/02C01G23/07C01P2002/30C01P2004/03C01P2006/12C01P2006/90
    • There is provided a method and an apparatus for producing metal oxide particles, which produce metal oxide particles having a high photocatalytic activity with high yield. The method for producing metal oxide particles of the invention is characterized by including combining, in a reaction tube, a preheated metal chloride-containing gas with a preheated first gas which does not contain the metal chloride at a first junction to obtain a first combined gas, and combining the first combined gas with a preheated second gas which does not contain the metal chloride, at a second junction which is further downstream of the first junction, to obtain a second combined gas, wherein at least one of the metal chloride-containing gas and the first gas contains oxygen, and wherein the preheated metal chloride-containing gas is further heated in a region between the first junction and the second junction (referred to as first reaction zone), by combining the first gas with the metal chloride-containing gas at the first junction while setting the preheat temperature of the first gas at a temperature equal to or higher than the preheat temperature of the metal chloride-containing gas, and the first combined gas is further heated in a region downstream of the second junction by combining the second gas with the first combined gas at the second junction while setting the preheat temperature of the second gas at a temperature equal to or higher than the temperature of the first combined gas.
    • 提供了一种生产金属氧化物颗粒的方法和设备,其以高产率生产具有高光催化活性的金属氧化物颗粒。 本发明的金属氧化物粒子的制造方法的特征在于,在反应管中,将预热的含金属氯化物的气体与在第一接合处不含有金属氯化物的预热的第一气体组合,得到第一组合气体 并且在第二结合处将第一组合气体与不含金属氯化物的预热的第二气体组合,以获得第二组合气体,其中至少一种含金属氯化物的 气体,第一气体含有氧,并且其中预热的含金属氯化物的气体在第一接合点和第二接合点(称为第一反应区域)之间的区域中进一步加热,通过将第一气体与金属氯化物 - 在将第一气体的预热温度设定为等于或高于金属氯化物c的预热温度的温度的同时, 通过在第二连接处组合第二气体与第一组合气体,将第一组合气体在第二接合点的下游区域进一步加热,同时将第二气体的预热温度设定在等于或高于 第一组合气体的温度。