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1. 发明专利

DE69515917T2 未知
公开(公告)号：DE69515917T2
公开(公告)日：2000-10-05
申请号：DE69515917
申请日：1995-12-18
申请人： SAWTEK INC
发明人： SOLIE P
IPC分类号： H03H9/02 , H03H9/145
摘要： Selected transducer geometries including unbalanced split electrode and three electrode per wavelength structures are employed for use in wide band tapered SAW devices. Combining geometries useful in narrow bandwidth SAW filters for canceling reflected waves leading to triple transit interference, and electrode tapering useful in wide bandwidth SAW filters for permitting transduction of a wide range of surface acoustic wavelengths has the unexpected result of significantly reducing insertion loss and improving triple transit suppression over wider bandwidths than can be achieved with SPUDT designs on non-tapered devices. The interdigitized electrode fingers of opposing bus bars in the transducer have a tapered alignment wherein a period of electrode finger portions along an acoustic wave propagation axis decreases along a transducer dimension. In one embodiment, the transducer has spacing between the electrode fingers which provides two pairs of unbalanced split electrodes within a spacing length equal to its respective acoustic wavelength. The positions and widths of the fingers are such that SPUDT transduction and reflection conditions are satisfied. In an alternate embodiment, the transducer has three electrodes per acoustic wavelength wherein the electrode widths and gaps between electrodes vary to satisfy the SPUDT transduction and reflection conditions. The performance of each transducer is further enhanced with subtransducers for providing series-block weighting. The three electrode per wavelength finger geometry further includes line-width weighting for providing a fine weighting control to complement the inherently coarse weighting control of the series-block weighted transducer.

2. 发明申请

US20020035899A1 Socket wrench and socket set 有权
公开(公告)号：US20020035899A1
公开(公告)日：2002-03-28
申请号：US09998291
申请日：2001-11-30
申请人： Sawtek, Inc.
发明人： David Peters
IPC分类号： B25B023/16
CPC分类号： B25G1/085
摘要： A socket set includes a socket wrench having a tapered hollow handle. A tapered tray fits within said handle. The tapered tray holds a plurality of sockets resting on their sides. This enables one to combine the socket set with the wrench so the sockets are always present when needed.

3. 发明申请

US20020174748A1 Wrench set 失效
标题翻译：扳手套
公开(公告)号：US20020174748A1
公开(公告)日：2002-11-28
申请号：US09863047
申请日：2001-05-22
申请人： Sawtek, Inc.
发明人： David Peters
IPC分类号： B25B023/16
CPC分类号： B25B13/56 , B25G1/085
摘要： A wrench set includes a hollow body containing a tray. The tray includes a plurality of different size wrench heads held in a nesting relationship within said tray. The tray is easily removed from the hollow interior allowing a wrench head to be removed. Each wrench head is adapted to fit at the end of said hollow handle to permit its use and then can be returned to its tray and held within the hollow handle to provide a complete wrench set taking up minimal space.
摘要翻译：扳手组包括容纳托盘的中空体。托盘包括在所述托盘内以嵌套关系保持的多个不同尺寸的扳手头。托盘容易从中空内部移除，从而可以拆下扳手头。每个扳手头适于装配在所述中空手柄的端部以允许其使用，然后可以返回到其托盘并且保持在中空手柄内，以提供占用最小空间的完整的扳手组。

4. 发明专利

DE10196571B4 未知
公开(公告)号：DE10196571B4
公开(公告)日：2007-07-05
申请号：DE10196571
申请日：2001-05-03
申请人： SAWTEK INC
发明人： NAUMENKO NATALYA F , ABBOTT BENJAMIN P
IPC分类号： H03H3/08 , H03H9/25 , H03H9/02 , H03H9/145 , H03H9/64
摘要： A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiTaO3 and an electrode pattern provided on a surface of the piezoelectric substrate which forms a resonator having an electrode thickness in a range of about 1% to about 15% of an acoustic wavelength of a surface acoustic wave excited on the surface of the substrate. The piezoelectric substrate has an orientation defined by Euler angles (lambd, mu, theta), with angle lambd in a range from -4° to +4°, angle mu in a range from about -52° to about -36°, and angle theta in a range from about (-1.365 lambd-4)° to (-1.365 lambd+4)°. Such orientations simultaneously combined with an optimized propagation loss at resonant and anti-resonant frequencies provide for improved performance in RF applications.

5. 发明专利

DE69628332T2 未知
公开(公告)号：DE69628332T2
公开(公告)日：2004-03-25
申请号：DE69628332
申请日：1996-12-20
申请人： SAWTEK INC
发明人： NAUMENKO NATALYA F , ORLOV VICTOR S
IPC分类号： H03H9/25 , H01L41/08 , H03H9/00 , H03H9/02 , H03H9/17
摘要： A langasite crystal substrate having a prescribed range of Euler angles for substrate and crystal orientation improves signal processing for a surface acoustic wave (SAW) device, and thus for radiotelephones, mobile communication systems, television systems, and the like. When a voltage is applied to an input interdigital transducer IDT (2), a surface acoustic wave is generated in a piezoelectric substrate of langasite (1). This wave propagates in a direction generally perpendicular to electrodes of the IDT (2). The langasite crystal cut and wave propagation directions are defined which reduce insertion loss due to SAW transduction, diffraction, and beam steering. Temperature stability is improved. A low power flow angle and reduced level of diffraction is also achieved.

6. 发明申请

WO2004006431A1 SAW FILTER DEVICE AND METHOD EMPLOYING NORMAL TEMPERATURE BONDING FOR PRODUCING DESIRABLE FILTER PRODUCTION AND PERFORMANCE CHARACTERISTICS 审中-公开
标题翻译： SAW滤波器装置和方法采用正常温度结合生产可靠的过滤器生产和性能特性
公开(公告)号：WO2004006431A1
公开(公告)日：2004-01-15
申请号：PCT/US2003/018143
申请日：2003-06-10
申请人： SAWTEK, INC.
发明人： ABBOTT, Benjamin , CHOCOLA, Jack , MALOCHA, Svetlana , MONETTI, Gary
IPC分类号： H03H9/25
CPC分类号： H03H3/10 , H03H3/08 , H03H9/02094 , H03H9/02559 , H03H9/02566 , H03H9/02574 , H03H9/02834 , H03H9/02897 , H03H9/02952 , H03H9/02984 , H03H9/6489 , Y10T29/42 , Y10T29/49002 , Y10T29/49005 , Y10T29/49155 , Y10T29/49156
摘要： A SAW filter (10) includes a piezoelectric substrate (16) of Lithium Niobate or optionally Lithium Tantalate having a thickness of at least twice an acoustic wavelength. The piezoelectric substrate (16) is bonded to a surrogate substrate (18) of a silicon material. The surrogate substrate (18) is characterized by a resistivity of at least 100 ohm-cm and an expansion coefficient compatible with the piezoelectric substrate (16). A catalytic bonding film (20) between the piezoelectric substrate (16) and the surrogate substrate (18) is formed from a first catalytic bonding film deposited onto a surface of the piezoelectric substrate (16) and a second catalytic bonding film deposited onto a surface of the surrogate substrate (18). The piezoelectric substrate (16) is bonded to the surrogate substrate (18) through a compression force sufficient for providing a bonding at a normal temperature.
摘要翻译： SAW滤波器（10）包括铌酸锂的压电衬底（16）或任选的具有至少两倍声波长的厚度的钽酸锂。压电基板（16）被接合到硅材料的替代基板（18）上。替代衬底（18）的特征在于至少为100欧姆 - 厘米的电阻率和与压电衬底（16）相容的膨胀系数。在压电基板（16）和代用基板（18）之间的催化接合膜（20）由沉积在压电基板（16）的表面上的第一催化接合膜和沉积在表面上的第二催化接合膜的替代基板（18）。压电基板（16）通过足以在常温下提供接合的压缩力而与代用基板（18）接合。

7. 发明申请

WO0176064A3 DIE LAYOUT FOR SAW DEVICES AND ASSOCIATED METHODS 审中-公开
标题翻译：用于SAW器件和相关方法的DIE布局
公开(公告)号：WO0176064A3
公开(公告)日：2002-02-28
申请号：PCT/US0110237
申请日：2001-03-30
申请人： SAWTEK INC , ABBOTT BENJAMIN P
发明人： ABBOTT BENJAMIN P
IPC分类号： H03H3/08 , H03H9/145 , H03H9/64
CPC分类号： H03H9/14547 , H03H3/08 , H03H9/145 , H03H9/14594 , H03H9/643 , H03H9/6433 , H03H9/6473 , H03H9/6489 , Y10T29/42
摘要： A surface-acoustic-wave die includes a generally rectangular die that comprises a piezoelectric material, atop which is positioned a surface-acoustic-wave electrode pattern. The pattern has a generally rectangular footprint, and the footprint has a top edge that is positioned at an acute, nonzero angle to a top end of the die. A pair of generally rectangular electrode pads are both in electrical contact with the electrode pattern, each pad adjacent diametrically opposed corners of the die. The device addresses the inefficiency in the conventional die layout technique, and provides a method for reducing the width of the die for SAW coupled resonator filters resulting in a smaller package.
摘要翻译：表面声波模具包括大致矩形的模具，其包括压电材料，顶部位于表面声波电极图案上。该图案具有大致矩形的占位面积，并且占地面积具有顶部边缘，该顶部边缘以与模具顶端的锐角非零的角度定位。一对大致矩形的电极焊盘与电极图案电接触，每个焊盘邻近模具的直径相对的角。该器件解决了传统芯片布局技术中的低效率，并且提供了一种减小用于SAW耦合谐振器滤波器的芯片的宽度的方法，导致较小的封装。

8. 发明申请

WO1997025776A1 HIGH FREQUENCY SAW DEVICE 审中-公开
标题翻译：高频SAW器件
公开(公告)号：WO1997025776A1
公开(公告)日：1997-07-17
申请号：PCT/US1996017906
申请日：1996-12-20
申请人： SAWTEK, INC. , NAUMENKO, Natalya F. , ORLOV, Victor S.
发明人： SAWTEK, INC.
IPC分类号： H03H09/17
CPC分类号： H03H9/02606 , H03H9/0259
摘要： A langasite crystal substrate having a prescribed range of Euler angles for substrate and crystal orientation improves signal processing for a surface acoustic wave (SAW) device, and thus for radiotelephones, mobile communication systems, television systems, and the like. When a voltage is applied to an input interdigital transducer IDT (2), a surface acoustic wave is generated in a piezoelectric substrate of langasite (1). This wave propagates in a direction generally perpendicular to electrodes of the IDT (2). The langasite crystal cut and wave propagation directions are defined which reduce insertion loss due to SAW transduction, diffraction, and beam steering. Temperature stability is improved. A low power flow angle and reduced level of diffraction is also achieved.
摘要翻译：具有用于衬底和晶体取向的欧拉角的规定范围的硅藻土晶体衬底改善了表面声波（SAW）器件的信号处理，并因此改善了无线电话，移动通信系统，电视系统等的信号处理。当电压被施加到输入叉指式换能器IDT（2）时，在朗氏体（1）的压电基板中产生表面声波。该波在大致垂直于IDT（2）的电极的方向上传播。定义了镧系晶体切割和波传播方向，其减少了由SAW传导，衍射和光束转向引起的插入损耗。温度稳定性提高。还实现了低功率流动角度和降低的衍射水平。

9. 发明专利

AU6346301A System and method for array processing of surface acoustic wave devices 未知
公开(公告)号：AU6346301A
公开(公告)日：2001-12-17
申请号：AU6346301
申请日：2001-05-24
申请人： SAWTEK INC
发明人： CARPENTER CHARLES
IPC分类号： H01L23/10 , H03H3/08 , H03H9/05

10. 发明专利

DE69515917D1 未知
公开(公告)号：DE69515917D1
公开(公告)日：2000-04-27
申请号：DE69515917
申请日：1995-12-18
申请人： SAWTEK INC
发明人： SOLIE P
IPC分类号： H03H9/02 , H03H9/145
摘要： Selected transducer geometries including unbalanced split electrode and three electrode per wavelength structures are employed for use in wide band tapered SAW devices. Combining geometries useful in narrow bandwidth SAW filters for canceling reflected waves leading to triple transit interference, and electrode tapering useful in wide bandwidth SAW filters for permitting transduction of a wide range of surface acoustic wavelengths has the unexpected result of significantly reducing insertion loss and improving triple transit suppression over wider bandwidths than can be achieved with SPUDT designs on non-tapered devices. The interdigitized electrode fingers of opposing bus bars in the transducer have a tapered alignment wherein a period of electrode finger portions along an acoustic wave propagation axis decreases along a transducer dimension. In one embodiment, the transducer has spacing between the electrode fingers which provides two pairs of unbalanced split electrodes within a spacing length equal to its respective acoustic wavelength. The positions and widths of the fingers are such that SPUDT transduction and reflection conditions are satisfied. In an alternate embodiment, the transducer has three electrodes per acoustic wavelength wherein the electrode widths and gaps between electrodes vary to satisfy the SPUDT transduction and reflection conditions. The performance of each transducer is further enhanced with subtransducers for providing series-block weighting. The three electrode per wavelength finger geometry further includes line-width weighting for providing a fine weighting control to complement the inherently coarse weighting control of the series-block weighted transducer.

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