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1. 发明授权

US6028564A Wire antenna with optimized impedance for connecting to a circuit 失效
标题翻译：具有优化阻抗的电线天线，用于连接电路
公开(公告)号：US6028564A
公开(公告)日：2000-02-22
申请号：US790640
申请日：1997-01-29
申请人： Dah-Weih Duan , Daniel Joseph Friedman , Harley Kent Heinrich
发明人： Dah-Weih Duan , Daniel Joseph Friedman , Harley Kent Heinrich
IPC分类号： H01Q1/36 , H01Q9/16 , H01Q19/10
CPC分类号： G06K19/07786 , H01Q1/36 , H01Q9/16
摘要： An antenna used as a voltage and power source is designed to operate with arbitrary load, or front end. The antenna has one or more (number of) loading bars that are placed adjacent to the elements of the antenna at a spacing distance. The real part of the antenna input impedance is changed by adjusting the loading bar length, width, and/or spacing distance and/or the number of loading bars. These changes are implemented to reduce the real part of the antenna input impedance to make it small enough to develop an adequate voltage, Vp, to operated the front end and connected circuitry. In a preferred embodiment, the real part of the antenna input impedance is reduced to the point at which Vp no longer increases. One or more stubs is added to one or more of the antenna elements. The stubs act as two-conductor transmission line and is terminated either in a short-circuit or open-circuit. The short-circuit stubs act as a lumped inductor. The open-circuit stub acts as a lumped capacitor. The magnitude of these lumped capacitors and inductors (reactances) is affected by a stub length, a stub conductor width, and a stub spacing. Zero or more short-circuit stubs and zero or more open-circuit stubs are added to one or more of the antenna elements to change the reactive (imaginary) part of the antenna input impedance. In a preferred embodiment, the reactive part is changed to be equal to the negative magnitude of the reactive part of the front end input impedance. For a given real part of the antenna impedance, Ra, this approach maximizes both the DC voltage generated from the input and maximizes the power transferred between the antenna and the front end.
摘要翻译：用作电压和电源的天线设计为以任意负载或前端工作。天线具有一个或多个（多个）加载条，其以间隔距离放置在与天线的元件相邻的位置。天线输入阻抗的实际部分是通过调节加载杆长度，宽度和/或间隔距离和/或加载杆的数量来改变的。实现这些改变以减少天线输入阻抗的实际部分，使其足够小以产生足够的电压Vp来操作前端和连接的电路。在优选实施例中，天线输入阻抗的实部减小到Vp不再增加的点。将一个或多个存根添加到一个或多个天线元件中。短截线作为双线传输线，并以短路或开路端接。短路短路充当集总电感。开路短截线作为集总电容器。这些集总电容器和电感器（电抗）的大小受到短截线长度，短截线导体宽度和短截线间距的影响。将零个或更多个短路短线和零个或更多个开路短截线添加到一个或多个天线元件中以改变天线输入阻抗的无功（虚部）部分。在优选实施例中，将反应部分改变为等于前端输入阻抗的反应部分的负幅度。对于天线阻抗Ra的给定实际，该方法使从输入端产生的直流电压最大化，并使天线和前端之间传递的功率最大化。

2. 发明授权

US08049625B1 High-performance mobile power antennas 有权
标题翻译：高性能移动电源天线
公开(公告)号：US08049625B1
公开(公告)日：2011-11-01
申请号：US12412627
申请日：2009-03-27
申请人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Louis R. Ruggiero
发明人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Louis R. Ruggiero
IPC分类号： G08B13/14
CPC分类号： G06K19/0709
摘要： An RFID tag's mobility can be increased and cost can be decreased by using high-performance mobile power antennas instead of battery powered tags. Disclosed are some power antennas that include a half wave rectifier, a full wave rectifier, and a voltage multiplier. These antennas can be cascaded to boost the power or voltage gain. Additionally, planar elements can be added to increase efficiency without decreasing mobility.
摘要翻译：通过使用高性能移动电源天线而不是电池供电的标签，可以提高RFID标签的移动性并降低成本。公开了一些功率天线，其包括半波整流器，全波整流器和电压倍增器。这些天线可以级联以提高功率或电压增益。此外，可以添加平面元件以提高效率而不降低移动性。

3. 发明授权

US6097347A Wire antenna with stubs to optimize impedance for connecting to a circuit 失效
标题翻译：具有短截线的有线天线，以优化用于连接到电路的阻抗
公开(公告)号：US6097347A
公开(公告)日：2000-08-01
申请号：US790639
申请日：1997-01-29
申请人： Dah-Weih Duan , Harley Kent Heinrich
发明人： Dah-Weih Duan , Harley Kent Heinrich
IPC分类号： H01Q1/22 , H01Q9/16 , H01Q9/26
CPC分类号： H01Q1/2225 , H01Q1/22 , H01Q9/16 , H01Q9/26
摘要： An antenna, used as a voltage and power source, is designed to operate with an arbitrary load, or front end. One or more stubs are added to one or more of the antenna elements. The stubs act as two conductor transmission line and are terminated either in a short-circuit or open-circuit. Where the transmission line is odd multiples of the guided wavelength in length, the short-circuit stubs act as lumped inductors and the open-circuit stubs act as lumped capacitors. The magnitude of these lumped capacitors and inductors (reactances) is affected by a stub length, a stub conductor width, and a stub spacing. Zero or more short-circuit stubs and zero or more open-circuit stubs are added to one or more of the antenna elements to change the reactive (imaginary) part of the antenna input impedance. In a preferred embodiment, the reactive part is changed to equal the negative magnitude of the reactive part of the front end input impedance.
摘要翻译：用作电压和电源的天线被设计为以任意负载或前端工作。一个或多个短截线被添加到一个或多个天线元件中。短截线作为双导体传输线，并以短路或开路端接。在传输线是导向波长的奇数倍的长度的地方，短路短截线作为集总电感，开路短路充当集总电容。这些集总电容器和电感器（电抗）的大小受到短截线长度，短截线导体宽度和短截线间距的影响。将零个或更多个短路短线和零个或更多个开路短截线添加到一个或多个天线元件中以改变天线输入阻抗的无功（虚部）部分。在优选实施例中，将反应部分改变为等于前端输入阻抗的反应部分的负幅度。

4. 发明授权

US6140146A Automated RFID transponder manufacturing on flexible tape substrates 有权
标题翻译：自动化RFID应答器制造在柔性胶带基材上
公开(公告)号：US6140146A
公开(公告)日：2000-10-31
申请号：US365792
申请日：1999-08-03
申请人： Michael John Brady , Dah-Weih Duan , Harley Kent Heinrich
发明人： Michael John Brady , Dah-Weih Duan , Harley Kent Heinrich
IPC分类号： G06K19/077 , H01L21/00
CPC分类号： G06K19/07718 , G06K19/07749
摘要： Processes and apparatus for manufacturing radio frequency transponders having substrates formed from a flexible tape or film are disclosed. The RF transponders are formed on the tape so that their longest dimension (e.g., their length ("L")) is oriented parallel to the length of the tape. This layout places few or no constraints in the transponder's length allowing the length of the transponder's antenna circuit to be adjusted to satisfy the requirements of various applications.
摘要翻译：公开了用于制造具有由柔性带或膜形成的基底的射频转发器的方法和装置。 RF转发器形成在带上，使得它们的最长尺寸（例如，其长度（“L”））平行于带的长度定向。该布局在转发器的长度上放置很少或没有约束，允许应答器的天线电路的长度被调整以满足各种应用的要求。

5. 发明授权

US06400274B1 High-performance mobile power antennas 有权
标题翻译：高性能移动电源天线
公开(公告)号：US06400274B1
公开(公告)日：2002-06-04
申请号：US09426235
申请日：1999-10-25
申请人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Lou Ruggiero
发明人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Lou Ruggiero
IPC分类号： G08B1314
CPC分类号： H01Q1/2225 , G01S13/758 , G06K7/0008 , G06K19/0701 , G06K19/0723 , H01Q1/22 , H01Q21/29
摘要： An RFID tag's mobility can be increased and cost can be decreased by using high-performance mobile power antennas instead of battery powered tags. Disclosed are some power antennas that include a half wave rectifier, a full wave rectifier, and a voltage multiplier. These antennas can be cascaded to boost the power or voltage gain. Additionally, planar elements can be added to increase efficiency without decreasing mobility.
摘要翻译：通过使用高性能移动电源天线而不是电池供电的标签，可以提高RFID标签的移动性并降低成本。公开了一些功率天线，其包括半波整流器，全波整流器和电压倍增器。这些天线可以级联以提高功率或电压增益。此外，可以添加平面元件以提高效率而不降低移动性。

6. 发明授权

US5767789A Communication channels through electrically conducting enclosures via frequency selective windows 失效
标题翻译：通过频率选择窗口通过导电外壳的通信通道
公开(公告)号：US5767789A
公开(公告)日：1998-06-16
申请号：US521902
申请日：1995-08-31
申请人： Ali Afzali-Ardakani , Michael John Brady , Dah-Weih Duan , Christopher Adam Feild , Harley Kent Heinrich , Paul Andrew Moskowitz
发明人： Ali Afzali-Ardakani , Michael John Brady , Dah-Weih Duan , Christopher Adam Feild , Harley Kent Heinrich , Paul Andrew Moskowitz
IPC分类号： H05K9/00 , H01Q1/52 , H01Q15/00 , H04B1/59 , H04B7/00 , H04Q1/00
CPC分类号： G06K7/10178 , H01Q1/526 , H01Q15/0013
摘要： Communication of information between the inside and the outside of an electrically conducting enclosure is performed through the use of a frequency selective surface on the electrically conducting enclosure, which permits passage of electromagnetic waves at particular frequencies, but prohibits waves of other frequencies from penetration. Thus, one or more objects contained within the electrically conducting enclosure, which include radio frequency tags attached to the objects containing information about the objects, may be monitored or interrogated by the transmission of an electromagnetic wave at the permitted frequency through the frequency selective surface. With such a system, control and inventory of enclosed objects may be performed while the EMI shielding function of the electrically conducting enclosure is maintained.
摘要翻译：通过在导电外壳上使用频率选择表面来执行导电外壳内外信息的通信，这允许以特定频率通过电磁波，但是禁止其它频率的波穿透。因此，可以通过通过频率选择表面以允许的频率的电磁波的传输来监视或询问包含在导电外壳内的一个或多个物体，其包括附接到包含关于物体的信息的物体的射频标签。利用这样的系统，可以在保持导电外壳的EMI屏蔽功能的同时执行封闭物体的控制和库存。

7. 发明授权

US07511621B1 High-performance mobile power antennas 失效
公开(公告)号：US07511621B1
公开(公告)日：2009-03-31
申请号：US11694229
申请日：2007-03-30
申请人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Lou Ruggiero
发明人： Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Ian Bardwell-Jones , Lou Ruggiero
IPC分类号： G08B13/14
CPC分类号： H01Q1/2225 , G01S13/758 , G06K7/0008 , G06K19/0701 , G06K19/0713 , G06K19/0723 , H01Q1/22 , H01Q21/29
摘要： An RFID tag's mobility can be increased and cost can be decreased by using high-performance mobile power antennas instead of battery powered tags. Disclosed are some power antennas that include a half wave rectifier, a full wave rectifier, and a voltage multiplier. These antennas can be cascaded to boost the power or voltage gain. Additionally, planar elements can be added to increase efficiency without decreasing mobility.

8. 发明授权

US06535175B2 Adjustable length antenna system for RF transponders 有权
公开(公告)号：US06535175B2
公开(公告)日：2003-03-18
申请号：US09765800
申请日：2001-01-19
申请人： Michael John Brady , Thomas Anthony Cofino , Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Venkata S. R. Kodukula , Michael Brent Madrid , Paul Andrew Moskowitz , Philip Murphy , Michael Louis Pinch , Dale Larry Scott
发明人： Michael John Brady , Thomas Anthony Cofino , Dah-Weih Duan , Daniel J. Friedman , Harley Kent Heinrich , Venkata S. R. Kodukula , Michael Brent Madrid , Paul Andrew Moskowitz , Philip Murphy , Michael Louis Pinch , Dale Larry Scott
IPC分类号： H01Q928
CPC分类号： H01Q1/2225 , G06K19/0726 , H01Q1/22 , H01Q1/36 , H01Q1/38 , H01Q9/14 , H01Q9/28 , H01Q9/285
摘要： The present invention provides an RF tag having an antenna that can be selectively tuned to achieve optimal performance. The RF tag comprises an RF transponder integrated circuit and an antenna connected to the RF transponder integrated circuit. The antenna includes components such as tuning stubs and loading bars that are physically alterable to selectively vary the performance characteristics of the antenna. The tuning stub and loading bar may each further comprising a variably selectable length having elements that may be removed by punching, cutting, etching, laser trimming or other process. The antenna may further comprise a leadframe or a flexible substrate.

9. 发明授权

US06281794B1 Radio frequency transponder with improved read distance 有权
标题翻译：射频转发器具有改善的读取距离
公开(公告)号：US06281794B1
公开(公告)日：2001-08-28
申请号：US09318590
申请日：1999-05-25
申请人： Dah-Weih Duan , Harley Kent Heinrich
发明人： Dah-Weih Duan , Harley Kent Heinrich
IPC分类号： G08D1314
CPC分类号： H01Q1/2225 , G06K7/0008 , G06K19/0723 , G06K19/07749 , G08B13/2414 , G08B13/2417 , G08B13/2431 , G08B13/2437 , G08B13/2442 , G08B13/2462 , H01L24/02 , H01L2924/01005 , H01L2924/01014 , H01L2924/01019 , H01L2924/01033 , H01L2924/01075 , H01L2924/01078 , H01L2924/01088 , H01L2924/10329 , H01L2924/14 , H01L2924/19042 , H01L2924/30105 , H01L2924/30107 , H01L2924/3011 , H01Q1/22 , H01Q9/0414 , H01Q9/0428 , H01Q13/02 , H01Q15/16 , H01Q19/106 , H01Q19/132 , H01Q21/065
摘要： A radio frequency identification transponder (RFID tag) in accordance with the principles of the present invention includes a tag antenna and RFID circuitry having respective input impedances Za and ZL. In accordance with the principles of the invention, the read distance of the RFID tag is maximized by connecting an inductor in series between the antenna and the RFID tag circuitry. The inductor having an impedance ZL that maximizes the expression [(Ra)(Ga)]½|(ZL|/|Za+Zind+ZL|, where | | indicates the absolute value of the enclosed expression.
摘要翻译：根据本发明的原理的射频识别应答器（RFID标签）包括具有各自的输入阻抗Za和ZL的标签天线和RFID电路。根据本发明的原理，通过将电感器串联连接在天线和RFID标签电路之间来最大化RFID标签的读取距离。具有使表达式[（Ra）（Ga）] 1/2 |（ZL | / | Za + Zind + ZL |，其中| |表示封闭表达式的绝对值）的阻抗ZL的电感器。

10. 发明授权

US6121878A System for controlling assets 有权
标题翻译：资产管理制度
公开(公告)号：US6121878A
公开(公告)日：2000-09-19
申请号：US190564
申请日：1998-11-12
申请人： Michael John Brady , Dah-Weih Duan , Harley Kent Heinrich , Venkata S. R. Kodukula
发明人： Michael John Brady , Dah-Weih Duan , Harley Kent Heinrich , Venkata S. R. Kodukula
IPC分类号： G06K19/04 , G06K19/077 , G08B13/24 , G08B13/14
CPC分类号： G08B13/2408 , G06K19/041 , G06K19/07749 , G08B13/2417 , G08B13/2434 , G08B13/2437 , G08B13/244 , G08B13/2442 , G08B13/2448 , H01L2223/6677 , H01L2224/16225 , H01L2224/48091 , H01L2924/00014 , H01L2924/01078 , H01L2924/01079 , H01L2924/10253 , H01L2924/15153 , H01L2924/15165 , H01L2924/3011 , H01L2924/3025
摘要： A system for controlling assets for inventory, loss-control, or monitoring. The system includes a combination RFID and EAS tag and a reader.
摘要翻译：控制库存，损失控制或监控资产的系统。该系统包括RFID和EAS标签的组合以及阅读器。

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