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
    • 2. 发明授权
    • Balanced type surface acoustic wave device
    • 平衡型声表面波装置
    • US5892418A
    • 1999-04-06
    • US898769
    • 1997-07-23
    • Keiji OnishiKazuo EdaYutaka TaguchiShunichi Seki
    • Keiji OnishiKazuo EdaYutaka TaguchiShunichi Seki
    • H03H9/25H03H9/00H03H9/64
    • H03H9/6436H03H9/0038H03H9/0042H03H9/1071H03H9/6433
    • The present invention provides surface acoustic wave devices which do not require a balanced-to-unbalanced transformer circuit regardless of the type of the peripheral circuits of the balanced type surface acoustic wave filter, i.e. a balanced type device or an unbalanced type. A transmitting interdigital transducer and a receiving interdigital transducer are formed on a substrate comprising 41.degree. Y cut-X propagation lithium niobate. A balanced type surface acoustic wave filter is formed on a substrate comprising 36.degree. Y cut-X propagation lithium tantalate. The balanced type surface acoustic wave filter comprises two series-arm surface acoustic wave resonators and two crossed-arm surface acoustic wave resonators connected in a lattice. The substrate on which the transmitting interdigital transducer and the receiving interdigital transducer are formed and the substrate on which the balanced type surface acoustic wave filter is formed are located in a ceramic package. One of the input terminals of the transmitting interdigital transducer is grounded. The output terminals of the receiving interdigital transducer are connected to the input terminals of the balanced type surface acoustic wave filter.
    • 本发明提供了不需要平衡型不平衡变压器电路的表面声波装置,而不管平衡型表面声波滤波器的外围电路的类型,即平衡型装置或不平衡型。 在包含41°Y切割X传播铌酸锂的基板上形成发射叉指式换能器和接收叉指式换能器。 在包含36°Y切割X传播的钽酸锂的基板上形成平衡型表面声波滤波器。 平衡型表面声波滤波器包括两个串联臂表面声波谐振器和两个以格子连接的交叉臂表面声波谐振器。 其上形成有发送叉指式换能器和接收叉指式换能器的基板和形成有平衡型表面声波滤波器的基板位于陶瓷封装中。 发射叉指式换能器的输入端之一接地。 接收叉指式换能器的输出端连接到平衡型声表面波滤波器的输入端。
    • 3. 发明授权
    • Surface acoustic wave device mounted module
    • 表面声波装置安装模块
    • US5459368A
    • 1995-10-17
    • US278905
    • 1994-07-22
    • Keiji OnishiShunichi SekiYutaka TaguchiKazuo Eda
    • Keiji OnishiShunichi SekiYutaka TaguchiKazuo Eda
    • H03H9/10H03H9/02H03H9/25H01L41/08
    • H03H9/1071H03H9/0542H03H9/0557H03H9/059H03H9/1085H01L2224/16225H01L2224/16235H01L2224/32225H01L2224/73203H01L2224/73204H01L2224/73253H01L2924/01046H01L2924/01079H01L2924/09701H01L2924/15192H01L2924/16152H01L2924/16195H01L2924/19105H01L2924/3011H01L2924/3025
    • This invention provides a surface acoustic wave device mounted module which is miniature, light, and highly reliable. The surface acoustic wave device mounted module also has excellent frequency characteristics. The surface acoustic wave device mounted module includes a multilayer substrate which has at least one layer of a shield pattern, input-output electrodes, grounding electrodes, through holes used for connecting electrodes, and a surface acoustic wave element. The surface acoustic wave element has metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin around the surface acoustic wave element. The electrode pads are input-output terminals and grounding terminals formed on the surface acoustic wave element. Continuities between the input-output terminals and the input-output electrodes, and between the grounding terminals and the grounding electrodes are established by the through holes. An electrode pattern is formed on the surface of the multilayer substrate facing and surrounding the surface acoustic wave element. A metallic lid is attached to the electrode pattern by a solder or a conductive resin so that the surface acoustic wave element is sealed in an airtight condition. The electrode pattern is connected to the grounding electrodes by the through holes.
    • 本发明提供一种微型,轻型,高可靠性的表面声波装置安装模块。 表面声波装置安装模块也具有优异的频率特性。 表面声波装置安装模块包括具有至少一层屏蔽图案,输入输出电极,接地电极,用于连接电极的通孔和表面声波元件的多层基板。 表面声波元件具有金属凸块,其在电极焊盘上传导涂覆有导电树脂,并在表面声波元件周围具有绝缘树脂。 电极焊盘是形成在声表面波元件上的输入输出端子和接地端子。 输入输出端子与输入输出电极之间以及接地端子与接地电极之间的连续性由通孔构成。 在面对并围绕声表面波元件的多层基板的表面上形成电极图案。 通过焊料或导电树脂将金属盖附接到电极图案,使得表面声波元件在气密状态下被密封。 电极图案通过通孔与接地电极连接。
    • 9. 发明授权
    • Surface acoustic wave filter with multiple ground terminals
    • 具有多个接地端子的表面声波滤波器
    • US5506552A
    • 1996-04-09
    • US334673
    • 1994-11-04
    • Shun-ichi SekiKazuo EdaYutaka TaguchiKeiji Onishi
    • Shun-ichi SekiKazuo EdaYutaka TaguchiKeiji Onishi
    • H03H9/64
    • H03H9/6483
    • In a surface acoustic wave (SAW) filter, on a 36.degree. Y-cut X-propagation lithium tantalate substrate, series branch SAW resonators, which are connected in series between an input terminal and an output terminal, and parallel branch SAW resonators, which are connected between respective pairs of the series branch resonators by wirings and which are grounded, are provided. Two series branch resonators and one parallel branch resonator are connected in a T shape, so as to form a fundamental unit. In the SAW filter, three fundamental units are serially connected. An interdigital transducer (IDT) included in each resonator is made of a metal film containing aluminum as the main component. The thickness of the metal film is in the range of 8% to 10% of the electrode pitch of the IDT of the parallel branch resonator.
    • 在表面声波(SAW)滤波器中,在36°Y切割的X传播的钽酸锂衬底上串联连接在输入端子和输出端子之间的分支SAW谐振器以及并联支路SAW谐振器,其中 通过布线连接在各对串联支路谐振器之间并且被接地。 两个串联支路谐振器和一个并联支路谐振器以T形连接起来形成基本单元。 在SAW滤波器中,三个基本单元串联。 包含在每个谐振器中的叉指式换能器(IDT)由以铝为主要成分的金属膜制成。 金属膜的厚度在并联支路谐振器的IDT的电极间距的8%〜10%的范围内。