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公开(公告)号：US20050116862A1
公开(公告)日：2005-06-02
申请号：US10914580
申请日：2004-08-09
申请人： Cornelis du Toit
发明人： Cornelis du Toit
IPC分类号： H01Q20060101 , H01Q1/38
CPC分类号： H01Q9/0414 , H01Q19/005
摘要： A stacked antenna comprising a first patch including at least one slot-like part thereon, a second patch including at least one strip-like part thereon; and wherein the at least one slot-like part of the first patch at least partially crosses over or partially crosses under the at least one strip-like part of the second patch thereby forming a coupling region. The at least one slot-like part may be formed by at least one notch in the first patch and the at least one strip-like part may be formed by at least one hole in the second patch.
摘要翻译： 一种堆叠天线，包括：第一贴片，其上包括至少一个狭缝状部分，第二贴片，其上包括至少一个条形部件; 并且其中所述第一贴片的所述至少一个狭缝状部分至少部分地跨过所述第二贴片的所述至少一个条状部分的上方或部分地交叉，从而形成耦合区域。 至少一个槽状部分可以由第一贴片中的至少一个凹口形成，并且至少一个条状部分可以由第二贴片中的至少一个孔形成。
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公开(公告)号：US07183922B2
公开(公告)日：2007-02-27
申请号：US10959562
申请日：2004-10-06
IPC分类号： G08B13/14
CPC分类号： G01S5/04 , G01S5/12 , G01S13/878 , G06K7/10079 , G06K7/10336 , G06K7/10346 , H01Q1/42 , H01Q3/36 , H01Q9/0407 , H01Q21/205 , H01Q25/00
摘要： An apparatus capable of tracking a target, comprising at least one near-field focused antenna comprising an array of elements and a phase shifter to form multiple fixed beams in the near-field, a sensor capable of sensing the location of the target, and a controller capable of accepting position information and capable of activating the proper fixed beam along a course so as to enable the near-field focused beams to track the target. The array of elements may be substantially linear and the sensor may be optical, mechanical, thermal, or sonic position detection subsystems.
摘要翻译： 一种能够跟踪目标的装置，包括至少一个包括元件阵列的近场聚焦天线和移相器，以在近场形成多个固定波束，能够感测目标位置的传感器，以及 控制器能够接受位置信息并且能够沿着路线激活适当的固定光束，以便使近场聚焦光束能够跟踪目标。 元件阵列可以是基本上线性的，并且传感器可以是光学，机械，热或声音位置检测子系统。
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公开(公告)号：US20060226929A1
公开(公告)日：2006-10-12
申请号：US11336566
申请日：2006-01-20
申请人： Cornelis du Toit , Deirdre Ryan
发明人： Cornelis du Toit , Deirdre Ryan
IPC分类号： H03H7/38
摘要： An embodiment of the present invention provides a power amplifier, comprising tunable impedance matching circuit including a plurality of tunable dielectric varactors and a DC voltage source interface capable of providing voltage to said plurality of saud tunable dielectric varactors.
摘要翻译： 本发明的实施例提供一种功率放大器，包括可调阻抗匹配电路，其包括多个可调谐介电变容二极管和能够向所述多个可调谐介电变容二极管提供电压的直流电压源接口。
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公开(公告)号：US20070200649A1
公开(公告)日：2007-08-30
申请号：US11698547
申请日：2007-01-27
申请人： Cornelis du Toit , Louise Sengupta
发明人： Cornelis du Toit , Louise Sengupta
IPC分类号： H01P1/18
摘要： An embodiment of the present invention provides a phase shifter, comprising a substrate, resistive ink adjacent one surface of said substrate and separating a voltage tunable dielectric material from said surface of said substrate and a plurality of conductors adjacent said voltage tunable dielectric material separated so as to form a gap filled with resistive ink in said gap.
摘要翻译： 本发明的一个实施例提供了一种移相器，包括基板，邻近所述基板的一个表面的电阻墨水，并从所述基板的所述表面分离电压可调电介质材料，以及与所述电压可调电介质材料相邻的多个导体， 以在所述间隙中形成填充有电阻墨水的间隙。
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公开(公告)号：US20060160501A1
公开(公告)日：2006-07-20
申请号：US11245898
申请日：2005-10-08
申请人： Greg Mendolia , James Martin , Izz Khayo , Cornelis du Toit , Heinz Bachmann , William McKinzie
发明人： Greg Mendolia , James Martin , Izz Khayo , Cornelis du Toit , Heinz Bachmann , William McKinzie
摘要： An embodiment of the present invention provides an apparatus, comprising an input port and a dynamic impedance matching network capable of determining a mismatch at the input port and dynamically changing the RF match by using at least one matching element that includes at least one voltage tunable dielectric capacitor. The matching network may be a “Pi”, a “T”, or “ladder” type network and the apparatus may further comprise at least one directional coupler capable of signal collection by sampling a portion of an incident signal, a reflected signal or both. In an embodiment of the present invention, the apparatus may also include a control and power control & logic unit (PC LU) to convert input analog signals into digital signals and sensing VSWR phase and magnitude and processing the digital signals using an algorithm to give it a voltage value and wherein the voltage values may be compared to values coming from the coupler and once compared and matched, the values may be passed to a Hi Voltage Application Specific Integrated Circuit (HV ASIC) to transfer and distribute compensatory voltages to the matching network elements.
摘要翻译： 本发明的实施例提供了一种装置，其包括输入端口和动态阻抗匹配网络，其能够通过使用至少一个匹配元件来确定输入端口处的失配并动态地改变RF匹配，该匹配元件包括至少一个电压可调电介质 电容器。 匹配网络可以是“Pi”，“T”或“梯形”型网络，并且该装置还可以包括至少一个定向耦合器，其能够通过对入射信号的一部分，反射信号或两者进行采样来进行信号采集 。 在本发明的一个实施例中，该装置还可以包括控制和功率控制与逻辑单元（PC LU），用于将输入的模拟信号转换成数字信号，并且使用算法给VSWR相位和幅度并处理数字信号 电压值，并且其中电压值可以与来自耦合器的值进行比较，并且一旦比较和匹配，则该值可以被传递到高电压专用集成电路（HV ASIC），以将补偿电压传输和分配给匹配网络 元素。
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公开(公告)号：US20060006962A1
公开(公告)日：2006-01-12
申请号：US11178099
申请日：2005-07-08
申请人： Cornelis du Toit , Louise Sengupta
发明人： Cornelis du Toit , Louise Sengupta
IPC分类号： H01P1/18
摘要： An embodiment of the present invention provides a hybrid phase shifter, comprising a first port wherein a microwave signal enters said hybrid phase shifter and splits and exits from two other ports into two reflector circuits, wherein said microwave signal reflects and re-enters said hybrid phase shifter and recombines and exits at an isolated port. The phase shifter may be operable at frequencies between 0.9 GHz and 5 GHz and operable at frequencies in the Ka-band. An embodiment of the present invention provides the hybrid phase shifter may further comprise meandering microstrip lines or using non-uniform lines such as alternating narrow and wide sections thereby enabling an overall size reduction a factor of 1.5 to 2. The meandering strip lines may be formed on a substrate and the phase shifter may be made tunable using voltage tunable dielectric material with said phase shifter.
摘要翻译： 本发明的实施例提供了一种混合移相器，包括第一端口，其中微波信号进入所述混合移相器并且从两个其它端口分离并离开到两个反射器电路中，其中所述微波信号反映并重新进入所述混合相位 移位并在隔离的港口重组和退出。 移相器可以在0.9GHz和5GHz之间的频率下操作，并且可以在Ka频带中的频率操作。 本发明的一个实施例提供了混合移相器还可以包括曲折的微带线或者使用不均匀的线，例如交替的窄和宽的部分，从而使总体尺寸减小1.5至2倍。可以形成蜿蜒带状线 可以使用具有所述移相器的电压可调电介质材料使移相器可调谐。
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公开(公告)号：US20050110641A1
公开(公告)日：2005-05-26
申请号：US10959633
申请日：2004-10-06
CPC分类号： G01S5/04 , G01S5/12 , G01S13/878 , G06K7/10079 , G06K7/10336 , G06K7/10346 , H01Q1/42 , H01Q3/36 , H01Q9/0407 , H01Q21/205 , H01Q25/00
摘要： An embodiment of the present invention provides an RFID tag reading system, comprising an antenna system associated with a portal through which said RFID tag may pass, said antenna system comprising: a plurality of non-uniformly spaced antenna elements arranged substantially linearly; a power divider for dividing transmit power thereby coupling signals to said plurality of antenna elements; and a beamforming network capable of phase shifting the signals between the power divider and the plurality of antenna elements such that radiated signals from each antenna element add coherently such that the radiated electromagnetic energy is focused at a focal point in the near field region or in the Fresnel region of said antenna system.
摘要翻译： 本发明的实施例提供一种RFID标签读取系统，其包括与所述RFID标签可以通过的门户相关联的天线系统，所述天线系统包括：基本上线性布置的多个非均匀间隔的天线元件; 功率分配器，用于分配发射功率，从而将信号耦合到所述多个天线元件; 以及能够相互移位功率分配器和多个天线元件之间的信号的波束成形网络，使得来自每个天线元件的辐射信号相干地添加，使得辐射的电磁能量聚焦在近场区域中的焦点处 所述天线系统的菲涅尔区域。
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公开(公告)号：US20050110595A1
公开(公告)日：2005-05-26
申请号：US10914424
申请日：2004-08-09
申请人： Cornelis du Toit
发明人： Cornelis du Toit
IPC分类号： H01P20060101 , H01P1/18
CPC分类号： H01P1/181
摘要： An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at least two conductors overlaying at least a portion of the tunable dielectric layer, the at least two conductors positioned so as to form a slot-line topology. In an embodiment of the present invention the slot-line may be between 2 μm and 5 μm wide and the tunable dielectric layer may be between 0.3 μm to 1.5 μm thick. Further, the slot-line topology may be a uniform slot-line topology throughout the length of the at least two conductors and the slot-line topology may have an edge ratio defined by r=Llow/(Llow+Lhigh). The edge ratio may be optimized for minimizing metal loss and minimizing dielectric loss for a given phase shifter length. In an embodiment of the present invention the value of r may be between 0.1 and 0.2.
摘要翻译： 本发明的实施例提供了一种移相器，包括：基极电介质层; 覆盖所述基极介质层的至少一部分的可调电介质层; 以及至少两个导体，其覆盖所述可调电介质层的至少一部分，所述至少两个导体定位成形成槽线拓扑。 在本发明的一个实施例中，槽线可以在2μm和5μm之间，并且可调电介质层可以在0.3μm至1.5μm厚之间。 此外，时隙线拓扑可以是在至少两个导体的整个长度上的均匀的时隙线拓扑，并且时隙线拓扑结构可以具有由r = L 低低+ L高高）。 可以优化边缘比率以最小化金属损耗并且使给定移相器长度的介电损耗最小化。 在本发明的一个实施方案中，r的值可以在0.1和0.2之间。
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公开(公告)号：US20050113138A1
公开(公告)日：2005-05-26
申请号：US10858016
申请日：2004-06-01
申请人： Greg Mendolia , Om Gupta , Cornelis du Toit
发明人： Greg Mendolia , Om Gupta , Cornelis du Toit
IPC分类号： G06K7/08 , G06K7/10 , H01Q1/42 , H01Q3/36 , H01Q9/04 , H01Q21/20 , H01Q25/00 , H04M1/00 , G08B13/14 , H04B1/38
CPC分类号： G01S5/04 , G01S5/12 , G01S13/878 , G06K7/10079 , G06K7/10336 , G06K7/10346 , H01Q1/42 , H01Q3/36 , H01Q9/0407 , H01Q21/205 , H01Q25/00
摘要： An RF ID card reader, comprising, RF ID circuitry to generate an RF ID signal, a transceiver in communication with the RF ID circuitry, and an antenna associated with the transceiver for scanning an area for at least one tag and establishing communication with the at least one tag, the antenna capable of creating a plurality of field focuses. Further, the RF ID card reader of the present invention may provide that the plurality of field focuses may be a near field focus and a far field focuse. Also, the field focuses may be created by a scanning antenna array. An embodiment of the present invention may also include at least one conducting curtain associated with the card reader, wherein the at least one conducting curtain may be capable of enhancing reception of the RF signals by reflecting RF signals in the area. An embodiment may also provide for at least one element and at least one phase shifter in the scanning antenna array be capable of being used as a multiple input and multiple output (MIMO) system to maximize information extracted from the RF signals.
摘要翻译： 一种RF ID读卡器，包括用于产生RF ID信号的RF ID电路，与RF ID电路通信的收发器，以及与收发器相关联的天线，用于扫描至少一个标签的区域并建立与该位置的通信 至少一个标签，能够创建多个场焦点的天线。 此外，本发明的RF ID读卡器可以提供多个场聚焦可以是近场聚焦和远场聚焦。 此外，场聚焦可以由扫描天线阵列产生。 本发明的实施例还可以包括与读卡器相关联的至少一个导电帘幕，其中所述至少一个导电帘幕可以通过在该区域中反射RF信号来增强对RF信号的接收。 实施例还可以提供至少一个元件，并且扫描天线阵列中的至少一个移相器能够被用作多输入和多输出（MIMO）系统以最大化从RF信号提取的信息。
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公开(公告)号：US20050110593A1
公开(公告)日：2005-05-26
申请号：US10938898
申请日：2004-09-10
申请人： Cornelis du Toit , Deirdre Ryan
发明人： Cornelis du Toit , Deirdre Ryan
IPC分类号： H01P5/04
摘要： An impedance matching circuit includes a conductor line having an input port and an output port, a ground conductor, a tunable dielectric material positioned between a first section of the conductor line and the ground conductor, a non-tunable dielectric material positioned between a second section of the conductor line and the ground conductor, and means for applying a DC voltage between the conductor line and the ground conductor. The impedance matching circuit may alternatively include a first planar ground conductor, a second planar ground conductor, a strip conductor having an input port and an output port, and positioned between the first and second planar ground conductors to define first and second gaps, the first gap being positioned between the strip conductor and the first planar ground conductor and the second gap being positioned between the strip conductor and the second planar ground conductor. A non-tunable dielectric material supports the first and second planar ground conductors and the strip conductor in the same plane. A connection is provided for applying a DC voltage between the strip conductor and the first and second planar ground conductors. A plurality of tunable dielectric layer sections are positioned between the strip conductor and the first and second planar ground conductors so as to bridge the gaps between the said first and second planar ground conductors and the strip conductor at a plurality of locations, leaving non-bridged sections in between, defining a plurality of alternating bridged and non-bridged co-planar waveguide sections.
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