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公开(公告)号：US20050255824A1
公开(公告)日：2005-11-17
申请号：US11166810
申请日：2005-06-24
CPC分类号： H03H9/0038 , H01L2224/05571 , H01L2224/05573 , H01L2224/16225 , H01L2924/15174 , H01L2924/15192 , H01L2924/16195 , H03H9/0042 , H03H9/02874 , H03H9/02952 , H03H9/0542 , H03H9/059 , H03H9/1071
摘要： A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
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公开(公告)号：US07075391B2
公开(公告)日：2006-07-11
申请号：US11166495
申请日：2005-06-24
IPC分类号： H03H9/64
CPC分类号： H03H9/0038 , H01L2224/05571 , H01L2224/05573 , H01L2224/16225 , H01L2924/15174 , H01L2924/15192 , H01L2924/16195 , H03H9/0042 , H03H9/02874 , H03H9/02952 , H03H9/0542 , H03H9/059 , H03H9/1071
摘要： A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
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3.发明授权Surface acoustic wave filter element, surface acoustic wave filter and communication device using the same 有权表面声波滤波器元件，表面声波滤波器和通信装置使用相同公开(公告)号：US07579931B2
公开(公告)日：2009-08-25
申请号：US11166810
申请日：2005-06-24
CPC分类号： H03H9/0038 , H01L2224/05571 , H01L2224/05573 , H01L2224/16225 , H01L2924/15174 , H01L2924/15192 , H01L2924/16195 , H03H9/0042 , H03H9/02874 , H03H9/02952 , H03H9/0542 , H03H9/059 , H03H9/1071
摘要： A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
摘要翻译： 表面声波滤波器元件具有压电基板; 以及形成在所述压电基板上的多个数字间转换器（IDT）电极，其中所述多个IDT电极中的至少一个连接到平衡型端子，并且其它IDT电极连接到平衡型端子或不平衡型端子， 并且连接或连接到所述至少一个IDT电极的第一布线电极装置和连接到或连接到其它IDT电极的第二布线电极装置设置在彼此不同的平面上。
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公开(公告)号：US06930570B2
公开(公告)日：2005-08-16
申请号：US10283375
申请日：2002-10-29
CPC分类号： H03H9/0038 , H01L2224/05571 , H01L2224/05573 , H01L2224/16225 , H01L2924/15174 , H01L2924/15192 , H01L2924/16195 , H03H9/0042 , H03H9/02874 , H03H9/02952 , H03H9/0542 , H03H9/059 , H03H9/1071
摘要： A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
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5.发明申请Surface acoustic wave filter element, surface acoustic wave filter and communication device using the same 有权表面声波滤波器元件，表面声波滤波器和通信装置使用相同公开(公告)号：US20050237133A1
公开(公告)日：2005-10-27
申请号：US11166495
申请日：2005-06-24
CPC分类号： H03H9/0038 , H01L2224/05571 , H01L2224/05573 , H01L2224/16225 , H01L2924/15174 , H01L2924/15192 , H01L2924/16195 , H03H9/0042 , H03H9/02874 , H03H9/02952 , H03H9/0542 , H03H9/059 , H03H9/1071
摘要： A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one of the plurality of IDT electrodes is connected to a balanced type terminal and other IDT electrodes are connected to balanced type terminals or unbalanced type terminals, and first wiring electrode means which is connected or to be connected to the at least one IDT electrode and second wiring electrode means which is connected or to be connected to the other IDT electrodes are disposed on planes different from each other.
摘要翻译： 表面声波滤波器元件具有压电基板; 以及形成在所述压电基板上的多个数字间转换器（IDT）电极，其中所述多个IDT电极中的至少一个连接到平衡型端子，并且其它IDT电极连接到平衡型端子或不平衡型端子， 并且连接或连接到所述至少一个IDT电极的第一布线电极装置和连接到或连接到其它IDT电极的第二布线电极装置设置在彼此不同的平面上。
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公开(公告)号：US20090102319A1
公开(公告)日：2009-04-23
申请号：US11916623
申请日：2006-06-22
CPC分类号： H03H9/0211 , H03H3/02 , H03H9/173 , H03H9/175 , H03H2003/021 , H03H2003/025
摘要： A first supporting section 30 is provided between a substrate section 40 and a second supporting section 20. The first supporting section 30 is structured by, e.g., a film formed from a material having a higher acoustic impedance than a piezoelectric body 11 and the substrate section 40, or a film formed from a material having a smaller Q value than the piezoelectric body 11 and substrate section 40. By inserting the first supporting section 30, most vibration from the second supporting section 20 toward the substrate section 40 is reflected (arrow a), and also a vibration having been transmitted to the substrate section 40 from the second supporting section 20 is prevented from reflecting at the bottom of the substrate section 40 and then returning in a direction of the vibration section 10 (arrow b).
摘要翻译： 第一支撑部分30设置在基板部分40和第二支撑部分20之间。第一支撑部分30由例如由具有比压电体11更高的声阻抗的材料形成的膜和基板部分 或者由具有比压电体11和基板部40的Q值小的材料形成的膜。通过插入第一支撑部30，从第二支撑部20向基板部40的大部分振动被反射（箭头a ），并且从第二支撑部20传递到基板部40的振动也被防止在基板部40的底部反射，然后在振动部10的方向上返回（箭头b）。
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公开(公告)号：US07479847B2
公开(公告)日：2009-01-20
申请号：US11582425
申请日：2006-10-18
申请人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
发明人： Takehiko Yamakawa , Hiroshi Yamaguchi , Hiroshi Nakatsuka , Hiroyuki Nakamura , Keiji Onishi , Toshio Ishizaki
CPC分类号： H03H9/605 , H03H9/25 , H03H9/542 , H03H9/6483 , H03H9/6493
摘要： A series piezoelectric resonator 11 is connected in series between an input terminal 15a and an output terminal 15b. A first electrode of a parallel piezoelectric resonator 12a is connected to a connection point between the input terminal 15a and the series piezoelectric resonator 11, and a second electrode of the parallel piezoelectric resonator 12a is connected to a first terminal of an inductor 13a. A first electrode of a parallel piezoelectric resonator 12b is connected to a connection point between the series piezoelectric resonator 11 and the output terminal 15b, and a second electrode of the parallel piezoelectric resonator 12b is connected to a first terminal of an inductor 13b. Second terminals of the inductors 13a and 13b are grounded. An additional piezoelectric resonator 14 is connected between the second electrode of the parallel piezoelectric resonator 12a and the second electrode of the parallel piezoelectric resonator 12b.
摘要翻译： 串联压电谐振器11串联连接在输入端子15a和输出端子15b之间。 平行压电谐振器12a的第一电极连接到输入端子15a和串联压电谐振器11之间的连接点，并联压电谐振器12a的第二电极连接到电感器13a的第一端子。 平行压电谐振器12b的第一电极连接到串联压电谐振器11和输出端子15b之间的连接点，并联压电谐振器12b的第二电极连接到电感器13b的第一端子。 电感器13a和13b的第二端接地。 另外的压电谐振器14连接在并联压电谐振器12a的第二电极和并联压电谐振器12b的第二电极之间。
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8.发明授权公开(公告)号：US07230367B2
公开(公告)日：2007-06-12
申请号：US10979277
申请日：2004-11-03
CPC分类号： H03H9/173 , H03H3/04 , H03H2003/021
摘要： A piezoelectric resonator includes a substrate, a lower electrode provided on or above the substrate, a piezoelectric member provided on or above the lower electrode, an upper electrode provided on or above the piezoelectric member, and a cavity provided below a vibration member including the lower electrode, the piezoelectric member, and the upper electrode. In a case where a resonance frequency of vibration with a thickness of the vibration member being a half of a wavelength is taken as fr1, an average of ultrasonic velocity in a material forming the cavity is taken as Vc2, and a value determined based on the resonance frequency fr1 and the average of ultrasonic velocity Vc2 is λc (=Vc2/fr1), a depth t2 of the cavity is set as, ( 2 n - 1 ) × λ c 4 - λc 8 ≦ t2 ≦ ( 2 n - 1 ) × λ c 4 + λ c 8 , where n is an arbitrary natural number.
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公开(公告)号：US07113055B2
公开(公告)日：2006-09-26
申请号：US10979420
申请日：2004-11-03
CPC分类号： H03H3/04 , H03H9/0211 , H03H9/173 , Y10T29/42
摘要： A piezoeletric resonator includes: a substrate; a lower electrode formed on or above the substrate; a piezoeletric body formed on or above the lower electrode; an upper electrode formed on or above the piezoeletric body; and a cavity under a vibrating portion formed by the lower electrode, the piezoeletric body, and the upper electrode. Where a resonant frequency of vibration with a thickness of the vibrating portion being a half of a wavelength is taken as fr, an average of ultrasonic velocity in a material forming the cavity is taken as Vc, and a value determined based on the resonant frequency fr and the average of ultrasonic velocity Vc is taken as λc (=Vc/fr), a depth of the cavity is set so as to be equal to or larger than n×λc/2−λc/8 and equal to or smaller than n×λc/2+λc/8.
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公开(公告)号：US20050218753A1
公开(公告)日：2005-10-06
申请号：US11092722
申请日：2005-03-30
IPC分类号： H01L41/053 , H03B5/30 , H03H9/02 , H03H9/17 , H03H9/58
CPC分类号： H03H9/02157 , H03H9/02149 , H03H9/174 , H03H9/585 , H03H9/588
摘要： The area of an opening C of a cavity 31 is equal to or greater than the area of a horizontal cross section D of a vibrating section 10. The vibrating section 10 is placed on a support section 20 at a position such that a vertical projection of the vibrating section 10 onto a substrate 30 is accommodated within the opening C of the cavity 31. Moreover, the sum of a vertical thickness t1 of the vibrating section 10 and a vertical thickness t2 of the support section 20 is equal to one wavelength of a resonance frequency fr of an acoustic resonator 1 (one wavelength=t1+t2), while the thickness t1 of the vibrating section 10 and the thickness t2 of the support section 20 are different from each other (t1≠t2). Thus, neither the thickness t1 of the vibrating section 10 nor the thickness t2 of the support section 20 is equal to the half wavelength of the resonance frequency fr.
摘要翻译： 空腔31的开口C的面积等于或大于振动部分10的水平横截面D的面积。 振动部分10被放置在支撑部分20上，使得振动部分10在基片30上的垂直突起容纳在空腔31的开口C内。 此外，振动部10的垂直厚度t 1和支撑部20的垂直厚度t 2之和等于声谐振器1的共振频率fr的一个波长（一个波长= t 1 + t 2 ），而振动部10的厚度t 1和支撑部20的厚度t 2彼此不同（t 1> t 2）。 因此，振动部10的厚度t 1和支撑部20的厚度t 2都不等于共振频率fr的半波长。
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