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    Surface Acoustic Wave Filter and Duplexer Component
    1.
    发明申请
    Surface Acoustic Wave Filter and Duplexer Component 有权
    表面声波滤波器和双工器组件

    公开(公告)号：US20120235766A1

    公开(公告)日：2012-09-20

    申请号：US13331937

    申请日：2011-12-20

    申请人： Tobias Krems ,  Ravi Challa

    发明人： Tobias Krems ,  Ravi Challa

    IPC分类号： H03H9/72 ,  H03H9/64

    CPC分类号： H03H9/725 ,  H03H9/0042

    摘要： A surface acoustic wave filter includes an arrangement of transducers having at least one first transducer one second transducer and one third transducer. The at least one first transducer is connected to the input terminal and a terminal for applying a reference potential. The second transducer is connected to the first output terminal and the terminal for applying the reference potential. The third transducer is connected to the second output terminal and the terminal for applying the reference potential. A capacitor is connected to at least one of a first and second output terminal in such a way that the capacitor is connected between the first and second output terminals or between one of the first and second output terminals and the terminal for applying the reference potential.

    摘要翻译： 表面声波滤波器包括具有至少一个第一换能器，一个第二换能器和一个第三换能器的换能器装置。 至少一个第一换能器连接到输入端子和用于施加参考电位的端子。 第二传感器连接到第一输出端子和用于施加参考电位的端子。 第三传感器连接到第二输出端子和用于施加参考电位的端子。 电容器以这样的方式连接到第一和第二输出端子中的至少一个，使得电容器连接在第一和第二输出端子之间，或者连接在第一和第二输出端子之一和用于施加参考电位的端子之间。

    Saw Filter Featuring Impedance Transformation
    6.
    发明申请
    Saw Filter Featuring Impedance Transformation 有权
    具有阻抗变换的锯片滤波器

    公开(公告)号：US20080246560A1

    公开(公告)日：2008-10-09

    申请号：US11576732

    申请日：2005-09-21

    申请人： Andreas Detlefsen

    发明人： Andreas Detlefsen

    IPC分类号： H03H9/145 ,  H03H9/64

    CPC分类号： H03H9/0028 ,  H03H9/0038 ,  H03H9/0042 ,  H03H9/14588 ,  H03H9/14591 ,  H03H9/6469

    摘要： A surface acoustic wave (SAW) filter includes at least one first electroacoustic transducer, and at least one second electroacoustic transducer. The at least one first electroacoustic transducer and the at least one second electroacoustic transducer are side-by-side inside an acoustic track having an aperture A0. The at least one first electroacoustic transducer is connected to an electrical output of the SAW filter, and the at least one second electroacoustic transducer is connected to an electrical input of the SAW filter.

    摘要翻译： 表面声波（SAW）滤波器包括至少一个第一电声换能器和至少一个第二电声换能器。 所述至少一个第一电声换能器和所述至少一个第二电声换能器并排在具有孔A 0 0的声轨内。 至少一个第一电声换能器连接到SAW滤波器的电输出，并且至少一个第二电声换能器连接到SAW滤波器的电输入端。

    WIRELESS COMMUNICATION SYSTEM USING SURFACE ACOUSTIC WAVE (SAW) SECOND HARMONIC TECHNIQUES
    7.
    发明申请
    WIRELESS COMMUNICATION SYSTEM USING SURFACE ACOUSTIC WAVE (SAW) SECOND HARMONIC TECHNIQUES 有权
    使用表面声波（SAW）的无线通信系统第二和谐技术

    公开(公告)号：US20080020709A1

    公开(公告)日：2008-01-24

    申请号：US11863330

    申请日：2007-09-28

    申请人： Peter Edmonson ,  Colin Campbell

    发明人： Peter Edmonson ,  Colin Campbell

    IPC分类号： H04B7/00 ,  H04M1/00 ,  H04Q7/20

    CPC分类号： H03H9/6406 ,  G01S13/755 ,  H03H9/0028 ,  H03H9/0042

    摘要： An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.

    摘要翻译： IDT在由单个电脉冲激励时产生SAW，并且可以被制造为体现代码，该代码提供SAW输入到IDT的无源自相关，从而使其进一步用作通信设备中的信号发生器 。 然而，IDT的内部尺寸与操作频率成反比，使得高频IDT存在显着的制造困难。 通过利用由IDT产生的谐波频率SAW来简化高频应用的IDT的制作。 因此，IDT可以根据基本频率内部尺寸标准设计，但是可以以基频的倍数工作，从而提供比常规SAW系统高得多的频率操作。 考虑到基于1.2GHz的基频的2.4GHz的二次谐波SAW系统的操作。

    Wireless communication system using surface acoustic wave (SAW) second harmonic techniques
    8.
    发明授权
    Wireless communication system using surface acoustic wave (SAW) second harmonic techniques 有权
    无线通信系统采用声表面波（SAW）二次谐波技术

    公开(公告)号：US07292822B2

    公开(公告)日：2007-11-06

    申请号：US10946420

    申请日：2004-09-21

    申请人： Peter J. Edmonson ,  Colin K. Campbell

    发明人： Peter J. Edmonson ,  Colin K. Campbell

    IPC分类号： H04B7/00

    CPC分类号： H03H9/6406 ,  G01S13/755 ,  H03H9/0028 ,  H03H9/0042

    摘要： An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.

    摘要翻译： IDT在由单个电脉冲激励时产生SAW，并且可以被制造为体现代码，该代码提供SAW输入到IDT的无源自相关，从而使其进一步用作通信设备中的信号发生器 。 然而，IDT的内部尺寸与操作频率成反比，使得高频IDT存在显着的制造困难。 通过开发由IDT产生的谐波频率SAW，可以简化高频应用的IDT的制作。 因此，IDT可以根据基本频率内部尺寸标准设计，但是可以以基频的倍数工作，从而提供比常规SAW系统高得多的频率操作。 考虑到基于1.2GHz的基频的2.4GHz的二次谐波SAW系统的操作。