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1. 发明授权

US08750810B2 Power amplifier with switched output matching for multi-mode operation 有权
标题翻译：功率放大器，具有开关输出匹配多模式操作
公开(公告)号：US08750810B2
公开(公告)日：2014-06-10
申请号：US12623248
申请日：2009-11-20
申请人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
发明人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H04B1/0458 , H03F1/56 , H03F3/245 , H04B1/406
摘要： Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.
摘要翻译：示例性实施例涉及具有功率放大器和实现用于多个操作模式的多个输出路径的切换输出匹配电路的发射机。功率放大器接收输入RF信号并提供放大的RF信号。输出匹配网络执行从功率放大器输出端的低阻抗到匹配网络输出端的较高阻抗的阻抗变换。多个输出路径耦合到输出匹配网络。当选择该输出路径时，每个输出路径为功率放大器提供不同的目标输出阻抗，并将放大的RF信号从功率放大器路由到天线。每个输出路径可以包括与开关串联耦合的匹配网络。当选择输出路径时，匹配网络为功率放大器提供目标输出阻抗。开关将输出路径耦合到/从功率放大器解耦。

2. 发明申请

US20110018632A1 POWER AMPLIFIER WITH SWITCHED OUTPUT MATCHING FOR MULTI-MODE OPERATION 有权
标题翻译：具有多模操作的开关量输出匹配功率放大器
公开(公告)号：US20110018632A1
公开(公告)日：2011-01-27
申请号：US12623248
申请日：2009-11-20
申请人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
发明人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
IPC分类号： H03F1/56
CPC分类号： H04B1/0458 , H03F1/56 , H03F3/245 , H04B1/406
摘要： Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.
摘要翻译：示例性实施例涉及具有功率放大器和实现用于多个操作模式的多个输出路径的切换输出匹配电路的发射机。功率放大器接收输入RF信号并提供放大的RF信号。输出匹配网络执行从功率放大器输出端的低阻抗到匹配网络输出端的较高阻抗的阻抗变换。多个输出路径耦合到输出匹配网络。当选择该输出路径时，每个输出路径为功率放大器提供不同的目标输出阻抗，并将放大的RF信号从功率放大器路由到天线。每个输出路径可以包括与开关串联耦合的匹配网络。当选择输出路径时，匹配网络为功率放大器提供目标输出阻抗。开关将输出路径耦合到/从功率放大器解耦。

3. 发明申请

US20100291888A1 MULTI-MODE MULTI-BAND POWER AMPLIFIER MODULE 有权
标题翻译：多模多功率放大器模块
公开(公告)号：US20100291888A1
公开(公告)日：2010-11-18
申请号：US12575414
申请日：2009-10-07
申请人： Aristotele Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman Frederick, JR. , Gurkanwal Singh Sahota , Marco Cassia , Nathan Pletcher , Yu Zhao , Thomas Myers
发明人： Aristotele Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman Frederick, JR. , Gurkanwal Singh Sahota , Marco Cassia , Nathan Pletcher , Yu Zhao , Thomas Myers
IPC分类号： H04B1/04
CPC分类号： H04B1/0458 , H03F1/0277 , H03F3/24 , H03F3/72 , H03F2203/7236 , H04B1/0483
摘要： A multi-mode multi-band power amplifier (PA) module is described. In an exemplary design, the PA module includes multiple power amplifiers, multiple matching circuits, and a set of switches. Each power amplifier provides power amplification for its input signal when selected. Each matching circuit provides impedance matching and filtering for its power amplifier and provides a respective output signal. The switches configure the power amplifiers to support multiple modes, with each mode being for a particular radio technology. Each power amplifier supports at least two modes. The PA module may further include a driver amplifier and an additional matching circuit. The driver amplifier amplifies an input signal and provides an amplified signal to the power amplifiers. The additional matching circuit combines the outputs of other matching circuits and provides an output signal with higher output power. The driver amplifier and the power amplifiers can support multiple output power levels.
摘要翻译：描述了多模式多频带功率放大器（PA）模块。在示例性设计中，PA模块包括多个功率放大器，多个匹配电路和一组开关。每个功率放大器在选择时为其输入信号提供功率放大。每个匹配电路为其功率放大器提供阻抗匹配和滤波，并提供相应的输出信号。这些开关配置功率放大器以支持多种模式，每种模式都适用于特定的无线电技术。每个功率放大器至少支持两种模式。 PA模块还可以包括驱动器放大器和附加匹配电路。驱动器放大器放大输入信号并向功率放大器提供放大的信号。附加匹配电路组合其他匹配电路的输出，并提供具有较高输出功率的输出信号。驱动器放大器和功率放大器可以支持多个输出功率电平。

4. 发明申请

US20100295629A1 OUTPUT CIRCUIT WITH INTEGRATED IMPEDANCE MATCHING, POWER COMBINING AND FILTERING FOR POWER AMPLIFIERS AND OTHER CIRCUITS 有权
标题翻译：具有集成阻抗匹配的输出电路，功率放大器和其他电路的功率组合和滤波
公开(公告)号：US20100295629A1
公开(公告)日：2010-11-25
申请号：US12541831
申请日：2009-08-14
申请人： Guy Klemens , Nathan Pletcher , Babak Nejati , Norman Frederick , Thomas Myers
发明人： Guy Klemens , Nathan Pletcher , Babak Nejati , Norman Frederick , Thomas Myers
IPC分类号： H03H7/38
CPC分类号： H03H7/38 , H03F1/56 , H03F3/195 , H03F3/245 , H03F3/604 , H03F2200/108 , H03F2200/171 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/414 , H03F2200/451 , H03H7/48 , H04B1/0483
摘要： An output circuit with integrated impedance matching, power combining, and filtering and suitable for use with power amplifiers and other circuits is described. In an exemplary design, an apparatus may include first and second circuits (e.g., power amplifiers) and an output circuit. The first circuit may provide a first single-ended signal and may have a first output impedance. The second circuit may provide a second single-ended signal and may have a second output impedance. The output circuit may include (i) first and second matching circuits that perform output impedance matching and filtering for the first and second circuits, (ii) a combiner (e.g., a summing node) that combines the first and second single-ended signals to obtain a combined single-ended signal, (iii) a third matching circuit that performs impedance matching and filtering for the combined single-ended signal, and (iv) switches to route the single-ended signals to different outputs.
摘要翻译：描述了具有集成阻抗匹配，功率组合和滤波并适用于功率放大器和其他电路的输出电路。在示例性设计中，装置可以包括第一和第二电路（例如，功率放大器）和输出电路。第一电路可以提供第一单端信号并且可以具有第一输出阻抗。第二电路可以提供第二单端信号并且可以具有第二输出阻抗。输出电路可以包括（i）对第一和第二电路执行输出阻抗匹配和滤波的第一和第二匹配电路，（ii）将第一和第二单端信号组合到的组合器（例如，求和节点）获得组合的单端信号，（iii）对组合的单端信号执行阻抗匹配和滤波的第三匹配电路，以及（iv）将单端信号路由到不同输出的开关。

5. 发明授权

US09398868B1 Cancellation of a baseline current signal via current subtraction within a linear relaxation oscillator-based current-to-frequency converter circuit 有权
标题翻译：在基于线性弛豫振荡器的电流 - 频率转换器电路中通过电流减法取消基线电流信号
公开(公告)号：US09398868B1
公开(公告)日：2016-07-26
申请号：US13610788
申请日：2012-09-11
申请人： Brian Otis , Nathan Pletcher
发明人： Brian Otis , Nathan Pletcher
IPC分类号： A61B5/00 , A61B5/145 , G02C7/04
CPC分类号： A61B5/1477 , A61B5/0004 , A61B5/002 , A61B5/0022 , A61B5/14507 , A61B5/14532 , A61B5/6821 , A61B5/7225 , A61B5/742 , G02C7/04 , H03K3/0377 , H03K4/502 , H04B1/40
摘要： This disclosure relates to systems and/or methods for subtracting in the current domain an output current primary signal from a primary sensor from an output current reference signal from a reference sensor to produce a frequency output signal indicative of the difference between the output current primary signal and the output current reference signal.
摘要翻译：本公开涉及用于在当前域中从来自参考传感器的输出电流参考信号中减去来自主传感器的输出电流初级信号的系统和/或方法，以产生表示输出电流主信号之间的差的频率输出信号和输出电流参考信号。

6. 发明授权

US09111473B1 Input system 有权
标题翻译：输入系统
公开(公告)号：US09111473B1
公开(公告)日：2015-08-18
申请号：US13594291
申请日：2012-08-24
申请人： Harvey Ho , Xiaoyu Miao , Nathan Pletcher
发明人： Harvey Ho , Xiaoyu Miao , Nathan Pletcher
IPC分类号： G09G5/00 , A61B3/113
CPC分类号： G09G5/00 , A61B3/113 , G02B1/043 , G06F3/013 , G06F3/0304 , G06F3/0425 , G09G2320/0261
摘要： Apparatus, systems and methods that facilitate eye tracking using a contact lens are provided. In some aspects, the contact lens includes: a substrate; an antenna, disposed on or within the substrate, that harvests radio frequency energy; an integrated circuit, disposed on or within the substrate, that receives power from the antenna; and electrical components, disposed on or within the substrate, that determine motion of an eye over which the contact lens is placed, and perform tracking of the eye based, at least, on the motion. For example, the motion of the eye can be determined based on telemetry components fabricated on or within a substrate of the contact lens. In some aspects, the contact lens can include light emitters that radiate light in a direction of the gaze of the wearer of the contact lens. A heads-up device can perform eye tracking based on the direction of the light beams.
摘要翻译：提供了使用隐形眼镜便于眼睛跟踪的装置，系统和方法。在一些方面，隐形眼镜包括：基底; 设置在基板上或内部的天线，其收集射频能量; 设置在所述基板上或内部的集成电路，其从所述天线接收功率; 以及设置在所述基板上或内部的电气部件，其确定放置所述隐形眼镜的眼睛的运动，以及至少基于所述运动来执行所述眼睛的跟踪。例如，可以基于在隐形眼镜的衬底上或内部制造的遥测部件来确定眼睛的运动。在一些方面，隐形眼镜可以包括沿隐形眼镜佩戴者的凝视方向辐射光的发光体。平视装置可以基于光束的方向执行眼睛跟踪。

7. 发明授权

US08857981B2 Facilitation of contact lenses with capacitive sensors 有权
公开(公告)号：US08857981B2
公开(公告)日：2014-10-14
申请号：US13559384
申请日：2012-07-26
申请人： Nathan Pletcher , Brian Otis
发明人： Nathan Pletcher , Brian Otis
IPC分类号： G02C1/00 , G02C11/00 , G02C7/04
CPC分类号： G02C11/10 , G02C7/04 , G02C7/049
摘要： Apparatus, systems and methods employing contact lens with capacitive sensors are provided. In some aspects, a contact lens includes: a substrate; a capacitive sensor, disposed on or within the substrate, that senses a capacitance on the contact lens; and a circuit disposed on or within the substrate. In some aspects, the circuit can include a capacitance analysis component that determines a condition of an eyelid associated with the eye over which the contact lens is disposed and/or a parameter associated with the eye over which the contact lens is disposed. In some aspects, the condition can be a blink of an eyelid. In some aspects, the parameter can be at least one of a pressure of an object in proximity to the contact lens, a thickness or type of a layer of material disposed on or within the contact lens or a composition of material on the contact lens.

8. 发明申请

US20140192311A1 CONTACT LENSES WITH HYBRID POWER SOURCES 有权
标题翻译：带有混合电源的接触镜
公开(公告)号：US20140192311A1
公开(公告)日：2014-07-10
申请号：US13559261
申请日：2012-07-26
申请人： Nathan Pletcher , Brian Otis
发明人： Nathan Pletcher , Brian Otis
IPC分类号： G02C11/00 , A61B3/00
CPC分类号： G02C7/04 , A61B5/14507 , A61B5/14532 , A61B5/6821 , G02C11/10 , H01L31/0445
摘要： Apparatus, systems and methods of contact lenses with power sources are provided. In some aspects, a contact lens can include a substrate; and a circuit. The circuit can include: one or more sensors disposed on or within the substrate; circuitry disposed on at least a portion of the substrate; one or more photovoltaic cells disposed on at least a portion of the substrate; and a hybrid power component that supplies at least one of two or more different types of power to the circuitry, wherein at least one of the two or more different types of power is radio frequency/inductive power. In various aspects, other types of power can be solar and/or microelectromechanical system power. Additionally, in various aspects, photovoltaic cells can be arrayed in different configurations and/or over a significant portion of a viewing surface of the contact lens. In some aspects, the photovoltaic cells can be transparent.
摘要翻译：提供了具有电源的隐形眼镜的装置，系统和方法。在一些方面，隐形眼镜可以包括基底; 和电路。电路可以包括：设置在基板上或内部的一个或多个传感器; 设置在所述基板的至少一部分上的电路; 设置在所述基板的至少一部分上的一个或多个光伏电池; 以及混合功率部件，其向所述电路提供两种或多种不同类型的功率中的至少一种，其中所述两种或更多种不同类型的功率中的至少一种是射频/感应功率。在各个方面，其他类型的功率可以是太阳能和/或微机电系统功率。此外，在各个方面，光伏电池可以以不同的配置和/或在隐形眼镜的观察表面的重要部分上排列。在一些方面，光伏电池可以是透明的。

9. 发明授权

US09298020B1 Input system 有权
标题翻译：输入系统
公开(公告)号：US09298020B1
公开(公告)日：2016-03-29
申请号：US13559288
申请日：2012-07-26
申请人： James Etzkorn , Nathan Pletcher , Babak Amirparviz
发明人： James Etzkorn , Nathan Pletcher , Babak Amirparviz
IPC分类号： G02C1/00 , G02C7/04 , G02C11/00
CPC分类号： G02C7/04 , A61B3/10 , A61B3/113 , A61B5/168 , A61B5/18 , A61B5/6821 , A61B2503/22 , G02C11/10
摘要： Apparatus, systems and methods facilitating contact lenses that detect fatigue or emotional state of a wearer of the contact lenses are provided. In some aspects, a contact lens includes: a substrate; one or more sensors disposed on or within the substrate, wherein the one or more sensors senses fatigue and/or an emotional state of a wearer of the contact lens; and an antenna disposed on or within the substrate, that communicates information sensed by the one or more sensors. In various aspects, systems can include the contact lens, a reader that can process the information sensed and an alarm generation component that can generate an alarm based on the determined fatigue and/or emotional state of the wearer of the contact lens.
摘要翻译：提供了便于隐形眼镜检测隐形眼镜佩戴者的疲劳或情感状态的装置，系统和方法。在一些方面，隐形眼镜包括：基底; 一个或多个传感器设置在基底上或内部，其中所述一个或多个传感器感测隐形眼镜的佩戴者的疲劳和/或情感状态; 以及设置在所述基板上或所述基板内的天线，其传送由所述一个或多个传感器感测的信息。在各个方面，系统可以包括隐形眼镜，可以处理所感测的信息的读取器以及可以基于所确定的隐形眼镜佩戴者的疲劳和/或情感状态而产生报警的报警产生部件。

10. 发明授权

US08870370B1 Contact lens that facilitates antenna communication via sensor impedance modulation 有权
标题翻译：通过传感器阻抗调制方便天线通讯的隐形眼镜
公开(公告)号：US08870370B1
公开(公告)日：2014-10-28
申请号：US13625835
申请日：2012-09-24
申请人： Brian Otis , Nathan Pletcher
发明人： Brian Otis , Nathan Pletcher
IPC分类号： G02C7/00 , A61B3/00 , G02C7/04
CPC分类号： G02C7/04 , A61B5/0002 , A61B5/01 , A61B5/14532 , A61B5/14546 , A61B5/6821
摘要： Systems, contact lenses and methods that facilitate antenna communication via sensor impedance modulation are provided. In one aspect, a system can include a contact lens and a radio frequency (RF) reader. The contact lens can include a substrate; an RF antenna, disposed on or within the substrate; and a sensing component, disposed on or within the substrate, and directly coupled to the RF antenna, wherein the RF antenna is configured to change impedance value as a sensed value of the sensing component changes. The RF reader is external to the contact lens, and configured to interrogate the RF antenna with an RF signal. The RF reader can receive a reflected RF signal from the RF antenna in response to the interrogation. The magnitude, phase and/or a frequency of the reflected RF signal can be based on the impedance value of the RF antenna.
摘要翻译：提供了通过传感器阻抗调制促进天线通信的系统，隐形眼镜和方法。在一个方面，系统可以包括隐形眼镜和射频（RF）读取器。隐形眼镜可以包括基底; 设置在基板上或内部的RF天线; 以及感测部件，其设置在所述基板上或所述基板内并且直接耦合到所述RF天线，其中所述RF天线被配置为随着所述感测部件的感测值改变而改变阻抗值。 RF读取器在隐形眼镜的外部，并被配置为用RF信号询问RF天线。 RF读取器可以响应于询问而从RF天线接收反射的RF信号。反射RF信号的幅度，相位和/或频率可以基于RF天线的阻抗值。

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