会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明申请
    • WIDE-BAND ACOUSTICALLY COUPLED THIN-FILM BAW FILTER
    • 宽带超声波耦合薄膜滤波器
    • US20130057360A1
    • 2013-03-07
    • US13642155
    • 2011-04-21
    • Johanna MeltausTuomas Pensala
    • Johanna MeltausTuomas Pensala
    • H03H9/54
    • H03H9/02228H03H9/0095H03H9/02007H03H9/02125H03H9/175H03H9/177H03H9/205H03H9/564H03H9/584H03H2003/0414Y10T29/42
    • In a bulk acoustic wave (BAW) filter based on laterally acoustically coupled resonators on piezoelectric thin films, one can utilize two distinct acoustic plate wave modes of different nature, for example the thickness extensional (longitudinal) TE1 and the second harmonic thickness shear (TS2) mode to form a bandpass response. The invention is based on the excitation of at least two lateral standing wave resonances belonging to different plate wave modes that facilitate the transmission of signal. The passband is designed by tailoring the wave propagation characteristics in the device such that the resonances are excited at suitable frequencies to form a passband of a desired shape. The bandwidth of the filter described herein may therefore be more than twice that of the existing state-of-the-art microacoustic filters. Consequently, it has significant commercial and technological value.
    • 在基于压电薄膜上的横向声耦合谐振器的体声波(BAW)滤波器中,可以利用不同性质的两种不同的声板波模,例如厚度延伸(纵向)TE1和二次谐波厚度剪切(TS2 )模式以形成带通响应。 本发明基于属于促进信号传输的不同平板波模式的至少两个横向驻波共振的激发。 该通带是通过调整装置中的波传播特性来设计的,使得谐振在合适的频率被激发以形成所需形状的通带。 因此,这里描述的滤波器的带宽可以是现有的最先进的微声滤波器的两倍以上。 因此,具有重要的商业和技术价值。
    • 49. 发明申请
    • Thin-film piezoelectric resonator and filter circuit
    • 薄膜压电谐振器和滤波电路
    • US20070176513A1
    • 2007-08-02
    • US10581030
    • 2006-03-08
    • Ryoichi OharaNaoko YanaseKenya SanoTakaaki YasumotoKazuhiko Itaya
    • Ryoichi OharaNaoko YanaseKenya SanoTakaaki YasumotoKazuhiko Itaya
    • H01L41/09
    • H03H9/174H03H9/02125H03H9/132H03H9/588H03H9/605
    • It is possible to provide a resonator structure that does not cause a variation in anti-resonant frequency can be achieved, even if the cavity and the upper and lower electrode shift. A thin-film piezoelectric resonator includes: a lower electrode provided on the principal surface of the substrate so as to cover the cavity; a piezoelectric film provided on the lower electrode so as to be located above the cavity; and an upper electrode. The upper electrode includes: a main portion which overlaps a part of the cavity, a protruding portion connected to the main portion, an extension portion provided at the opposite side of the main portion. The length of the protruding portion in a direction perpendicular to a direction of connecting to the main portion is substantially the same as the length of the connecting portion in a direction perpendicular to a direction of connecting to the main portion.
    • 即使空腔和上下电极发生偏移,也可以提供不会引起抗共振频率变化的谐振器结构。 薄膜压电谐振器包括:设置在基板的主表面上以覆盖空腔的下电极; 设置在所述下电极上以便位于所述空腔上方的压电膜; 和上电极。 上部电极包括:与空腔的一部分重叠的主要部分,连接到主要部分的突出部分,设置在主要部分相对侧的延伸部分。 突出部分在垂直于与主要部分连接的方向的方向上的长度基本上与连接部分在垂直于连接主体部分的方向的方向上的长度相同。