公开(公告)号：US20160072477A1

公开(公告)日：2016-03-10

申请号：US14941324

申请日：2015-11-13

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shogo INOUE ,  Masafumi IWAKI ,  Jun TSUTSUMI

IPC: H03H9/70 ,  H03H9/54 ,  H03H9/64 ,  H03H9/72

CPC classification number: H03H9/54 ,  H03H9/6433 ,  H03H9/70 ,  H03H9/706 ,  H03H9/725

Abstract: A duplexer includes: a transmit filter that is connected between an antenna terminal and a transmit terminal and has a plurality of acoustic wave resonators; a receive filter that is connected between the antenna terminal and a receive terminal and has a plurality of acoustic wave resonators; and a delay line or a longitudinal coupling type resonator that is connected in parallel with at least one of the plurality of acoustic wave resonators of the transmit filter and the plurality of acoustic wave resonators of the receive filter and has at least two IDTs (Interdigital Transducers).

公开(公告)号：US20130127566A1

公开(公告)日：2013-05-23

申请号：US13662973

申请日：2012-10-29

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masafumi IWAKI ,  Shogo INOUE

IPC: H03H9/70 ,  H03H9/64 ,  H03H9/72 ,  H03H9/58

CPC classification number: H03H9/14594 ,  H03H9/542 ,  H03H9/6436 ,  H03H9/6483 ,  H03H9/706 ,  H03H9/725

Abstract: A filter includes: first series resonators and first parallel resonators that are connected in a ladder shape between an input terminal and an output terminal; a first inductor that is connected in parallel to at least one first series resonator; one or more second parallel resonators that are provided separately from the first parallel resonators, are connected between the input terminal and the output terminal, and have a resonance frequency and an anti-resonance frequency at frequencies lower than a passband formed by the first series resonators and the first parallel resonators; wherein an attenuation region is formed by a first attenuation pole formed by the at least one first series resonator and the first inductor and a second attenuation pole formed by a resonant response of the one or more second parallel resonators.

Abstract translation: 滤波器包括：在输入端子和输出端子之间以梯形形式连接的第一串联谐振器和第一并联谐振器; 与至少一个第一串联谐振器并联连接的第一电感器; 与第一并联谐振器分开设置的一个或多个第二并联谐振器连接在输入端子和输出端子之间，并且在低于由第一串联谐振器形成的通带的频率处具有谐振频率和反谐振频率 和第一并联谐振器; 其中由所述至少一个第一串联谐振器和所述第一电感器形成的第一衰减极点和由所述一个或多个第二并联谐振器的谐振响应形成的第二衰减极点形成衰减区域。

公开(公告)号：US20150123746A1

公开(公告)日：2015-05-07

申请号：US14482272

申请日：2014-09-10

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Kentaro NAKAMURA ,  Hidetaro NAKAZAWA ,  Shogo INOUE ,  Jun TSUTSUMI

IPC: H03H9/64 ,  H01L41/047 ,  H03H9/25

CPC classification number: H03H9/6489 ,  H03H3/08 ,  H03H9/02818

Abstract: A surface acoustic wave device includes: a pair of comb-like electrodes formed on a piezoelectric substrate, each of which includes electrode fingers, dummy electrode fingers and a bus bar to which the electrode fingers and the dummy electrode fingers are connected, the electrode fingers and the dummy electrode fingers of one of the pair of comb-like electrodes facing the dummy electrode fingers and the electrode fingers of the other com-like electrode, respectively; and additional films extending in the form of a strip in a first direction in which the electrode fingers are arranged side by side, each of the additional films covering at least parts of gaps defined by ends of the electrode fingers of one of the pair of comb-like electrodes and ends of the dummy electrode fingers of the other comb-like electrode.

Abstract translation: 表面声波装置包括：形成在压电基板上的一对梳状电极，每一个都包括电极指，虚拟电极指和连接有电极指和虚拟电极指的汇流条，电极指 并且一对梳状电极中的一个的虚拟电极指分别面对虚拟电极指和另一个com状电极的电极指; 以及在电极指并排布置的第一方向上以带状形式延伸的附加膜，每个附加膜覆盖由一对梳子之一的电极指的端部限定的至少部分间隙 电极和另一梳状电极的虚拟电极指的端部。

公开(公告)号：US20140361850A1

公开(公告)日：2014-12-11

申请号：US14290762

申请日：2014-05-29

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shogo INOUE ,  Kentaro NAKAMURA ,  Hidetaro NAKAZAWA ,  Jun TSUTSUMI

IPC: H03H9/72 ,  H03H9/64

CPC classification number: H03H9/725 ,  H03H9/1452 ,  H03H9/6433 ,  H03H9/6436 ,  H03H9/6483

Abstract: A resonator includes: a first comb-shaped electrode including a first bus bar, first electrode fingers coupled to the first bus bar and extending in an extension direction, and first dummy electrode fingers coupled to the first bus bar; and a second comb-shaped electrode including a second bus bar, second electrode fingers coupled to the second bus bar, extending in the extension direction, and facing the first dummy electrode fingers through first gaps, and second dummy electrode fingers coupled to the second bus bar and facing the first electrode fingers through second gaps, wherein 0.5λ≦ΔD where ΔD represents a distance in the extension direction between at least two gaps that are at least adjoining two of the first gaps or/and at least adjoining two of the second gaps, and λ represents pitches of the first electrode finger and the second electrode finger.

Abstract translation: 谐振器包括：第一梳状电极，包括第一母线，耦合到第一母线并沿延伸方向延伸的第一电极指以及耦合到第一母线的第一虚拟电极指; 以及第二梳状电极，包括第二母线，耦合到所述第二母线的第二电极指，在所述延伸方向上延伸，并且通过第一间隙面向所述第一虚拟电极指，以及耦合到所述第二母线的第二虚设电极指 并且其中＆Dgr; D表示在至少两个间隙之间的至少两个间隙之间的延伸方向上的距离，所述至少两个间隙至少毗邻两个第一间隙或/和至少相邻的两个间隙 第二间隙中的两个，λ表示第一电极指和第二电极指的间距。

公开(公告)号：US20130314173A1

公开(公告)日：2013-11-28

申请号：US13872360

申请日：2013-04-29

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shogo INOUE

IPC: H03H9/70 ,  H03H9/58 ,  H03H9/64 ,  H03H9/72

CPC classification number: H03H9/70 ,  H03H9/0576 ,  H03H9/54 ,  H03H9/6479 ,  H03H9/6483

Abstract: A filter includes: acoustic wave resonators connected between an input terminal and an output terminal; and a cancel circuit including an input connection portion and an output connection portion connected so that the cancel circuit is connected in parallel to at least a part of the acoustic wave resonators, wherein the cancel circuit includes a first acoustic wave resonator connected between a node between the input connection portion and the output connection portion and a ground.

Abstract translation: 滤波器包括：连接在输入端和输出端之间的声波谐振器; 以及消除电路，包括输入连接部分和输出连接部分，所述输入连接部分和输出连接部分连接成使得所述消除电路并联连接到所述声波谐振器的至少一部分，其中所述消除电路包括连接在第二声波谐振器 输入连接部分和输出连接部分和地面。

公开(公告)号：US20130147578A1

公开(公告)日：2013-06-13

申请号：US13759385

申请日：2013-02-05

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Motoaki HARA ,  Shogo INOUE ,  Masafumi IWAKI ,  Jun TSUTSUMI

IPC: H03H9/70

CPC classification number: H03H9/70 ,  H03H9/02015 ,  H03H9/132 ,  H03H9/173 ,  H03H9/175 ,  H03H9/605 ,  H03H9/706 ,  H04B1/0057

Abstract: A duplexer includes: a first filter of which first and second ends connect to a common terminal and a first terminal respectively; and a second filter having a passband higher than that of the first filter, a first end and second end thereof connecting to the common terminal and a second terminal respectively, wherein a phase shifter is located neither between the first filter and the common terminal nor between the second filter and the common terminal, the second filter is a ladder-type filter including piezoelectric thin film resonators connected in a ladder shape, a propagation constant in a direction perpendicular to a thickness direction of a piezoelectric thin film in the piezoelectric thin film resonator is a real number at frequencies lower than a resonance frequency of the piezoelectric thin film resonator, and a resonator at a first stage is a parallel resonator in the second filter.

Abstract translation: 双工器包括：第一和第二端分别连接到公共端子和第一端子的第一滤波器; 以及第二滤波器，其通带高于第一滤波器的通带，其第一端和第二端分别连接到公共端子和第二端子，其中移相器既不位于第一滤波器和公共端子之间，也不位于 第二滤波器和公共端子，第二滤波器是梯形滤波器，包括梯形连接的压电薄膜谐振器，与压电薄膜谐振器中的压电薄膜的厚度方向垂直的方向的传播常数 是低于压电薄膜谐振器的谐振频率的实数，第一级的谐振器是第二滤波器中的并联谐振器。

公开(公告)号：US20150180451A1

公开(公告)日：2015-06-25

申请号：US14572246

申请日：2014-12-16

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Hidetaro NAKAZAWA ,  Kentaro NAKAMURA ,  Shogo INOUE ,  Jun TSUTSUMI ,  Takashi MATSUDA

IPC: H03H9/64

CPC classification number: H03H9/6489 ,  H03H3/08 ,  H03H9/02881 ,  H03H9/02889 ,  H03H9/02944 ,  H03H9/02952 ,  H03H9/14541

Abstract: A surface acoustic wave device includes: a pair of comb-type electrodes that are provided on a piezoelectric substrate and include electrode fingers and dummy electrode fingers, the electrode fingers of one of the pair of comb-type electrodes facing the dummy electrode fingers of the other comb-type electrode; and additional films that are provided to cover gaps between tip ends of the electrode fingers and tip ends of the dummy electrode fingers and to overlap with at least one of first through third groups in which the first and second groups respectively include the electrode fingers and the dummy electrode fingers located at opposite sides of the gaps in a first direction in which the electrode fingers extend, and the third group includes the electrode fingers located at sides of the gaps in a second direction that crosses the first direction.

Abstract translation: 表面声波装置包括：一对梳状电极，设置在压电基板上，包括电极指和虚拟电极指，所述一对梳型电极中的一个的电极指与所述虚拟电极指的面对 其他梳型电极; 以及附加膜，其被设置为覆盖电极指的末端和虚拟电极指的末端之间的间隙，并且与第一和第三组中的至少一个重叠，其中第一和第二组分别包括电极指和 位于电极指的第一方向的间隙的相对侧的虚设电极指，第三组包括位于沿与第一方向相反的第二方向的间隙侧的电极指。

公开(公告)号：US20150084716A1

公开(公告)日：2015-03-26

申请号：US14565093

申请日：2014-12-09

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shogo INOUE ,  Hiroshi NAKAMURA

IPC: H03H9/70 ,  H03H9/72 ,  H03H9/64

CPC classification number: H03H9/725 ,  H03H9/0023 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/02669 ,  H03H9/542 ,  H03H9/585 ,  H03H9/6436 ,  H03H9/644 ,  H03H9/6483 ,  H03H9/6489 ,  H03H9/706

Abstract: A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.

Abstract translation: 双工器包括连接在接收端子和天线端子之间的接收滤波器，并且包括作为声波谐振器的一个或多个串联谐振器，以及连接在发送端子和天线端子之间的发送滤波器，并且包括一个 或多个声波谐振器，作为一个或多个串联谐振器之一并且最接近接收滤波器中的天线端子的第一串联谐振器的谐振频率高于接收频带的上限频率 的接收过滤器。

公开(公告)号：US20140049340A1

公开(公告)日：2014-02-20

申请号：US13950600

申请日：2013-07-25

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shogo INOUE

IPC: H03H9/72 ,  H03H9/64

CPC classification number: H03H9/25 ,  H03H9/02637 ,  H03H9/14538 ,  H03H9/6483 ,  H03H9/725

Abstract: An acoustic wave filter includes: at least a parallel resonator, wherein at least one of the parallel resonator includes a piezoelectric substance, an IDT located on the piezoelectric substance, and reflectors located on the piezoelectric substance so as to sandwich the IDT, and a distance between a first electrode finger that is an electrode finger closest to the reflector among electrode fingers of the IDT and a second electrode finger that is an electrode finger closest to the IDT among electrode fingers of the reflector is less than 0.25(λIDT+λref) where a period of the electrode fingers of the IDT is λIDT and a period of the electrode fingers of the reflector is λref.

Abstract translation: 声波滤波器包括：至少一个并联谐振器，其中并联谐振器中的至少一个包括压电体，位于压电体上的IDT和位于压电体上的反射器，以夹持IDT， 在IDT的电极指中最靠近反射器的电极指的第一电极指和作为反射器的电极指中最靠近IDT的电极指的第二电极指小于0.25（λIDT+ lambdaref），其中 IDT的电极指的周期是λIDT，并且反射器的电极指的周期是lambdaref。