专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5903087A Electrode edge wave patterns for piezoelectric resonator 失效
标题翻译：压电谐振器的电极边缘波形图
公开(公告)号：US5903087A
公开(公告)日：1999-05-11
申请号：US920442
申请日：1997-08-29
申请人： John E. Mattson , James F. Caruba , Charles Zimnicki , Beverly A. Carroll
发明人： John E. Mattson , James F. Caruba , Charles Zimnicki , Beverly A. Carroll
IPC分类号： H01L41/09 , H03H9/13 , H03H9/19 , H01L41/08
CPC分类号： H03H9/132
摘要： A resonator (104) including a piezoelectric plate (102) with an electrode (108) having a random pattern (100) along a portion of an edge of the electrode (108). The random pattern (100) dampens or destructively interferes with undesirable and inharmonic vibrational modes. For example, a rectangular AT-cut quartz resonator, which vibrates in a thickness-shear mode may also possess undesirable flexure and face-shear modes. These modes not only present undesirable spurious frequencies, they also change over temperature, disturbing a frequency-ternperature response of the resonator. The random pattern (100) causes diffuse and/or specular scattering to reduce these undesirable modes, providing a more uniform frequency-temperature response which is beneficial in temperature compensated crystal oscillator applications.
摘要翻译：一种谐振器（104），包括具有电极（108）的压电板（102），所述电极具有沿所述电极（108）的边缘部分的随机图案（100）。随机图案（100）抑制或破坏性地干扰不期望的和不协调的振动模式。例如，以厚度剪切模式振动的矩形AT切割石英谐振器也可能具有不期望的弯曲和面剪切模式。这些模式不仅存在不期望的杂散频率，它们也随温度变化，从而扰乱谐振器的频率 - 温度响应。随机图案（100）引起扩散和/或镜面散射以减少这些不期望的模式，提供更均匀的频率 - 温度响应，这在温度补偿晶体振荡器应用中是有益的。

2. 发明授权

US5920146A Electrode edge wave patterns for piezoelectric resonator 失效
标题翻译：压电谐振器的电极边缘波形图
公开(公告)号：US5920146A
公开(公告)日：1999-07-06
申请号：US869895
申请日：1997-06-05
申请人： Beverly A. Carroll , Weiping Zhang , Sang Kim
发明人： Beverly A. Carroll , Weiping Zhang , Sang Kim
IPC分类号： H01L41/09 , H03H9/13 , H03H9/19 , H01L41/08
CPC分类号： H03H9/132
摘要： A piezoelectric resonator (10) with electrodes (14) having a periodic pattern (28) along a portion of an edge (30) of at least one of the electrodes (26). The periodic pattern (28) has a periodicity that destructively interferes with the undesirable vibrational mode. For example, a rectangular AT-cut quartz resonator, which vibrates in a thickness-shear mode may also possess undesirable flexure and face-shear modes. These modes not only present undesirable spurious frequencies, they also change over temperature, disturbing a frequency-temperature response (16) of the quartz crystal. The periodic pattern (28) substantially reduces these undesirable modes, providing a more uniform frequency-temperature response which is beneficial in temperature compensated crystal oscillator applications.
摘要翻译：一种具有电极（14）的压电谐振器（10），沿着至少一个所述电极（26）的边缘（30）的一部分具有周期性图案（28）。周期性图案（28）具有破坏性地干扰不期望的振动模式的周期性。例如，以厚度剪切模式振动的矩形AT切割石英谐振器也可能具有不期望的弯曲和面剪切模式。这些模式不仅存在不期望的杂散频率，它们也随温度变化，从而干扰了石英晶体的频率 - 温度响应（16）。周期性图案（28）基本上减少了这些不期望的模式，提供了更均匀的频率 - 温度响应，这在温度补偿晶体振荡器应用中是有益的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式