公开(公告)号：US06831517B1

公开(公告)日：2004-12-14

申请号：US10650337

申请日：2003-08-27

申请人： David J. Hedberg ,  James B. Turner

发明人： David J. Hedberg ,  James B. Turner

IPC分类号： H03G310

CPC分类号： H03F1/0261 ,  H03F1/0211 ,  H03F1/30 ,  H03F1/32 ,  H03F2200/102 ,  H03F2200/108 ,  H03F2200/181 ,  H03F2200/318 ,  H03F2200/411

摘要： A system (100) and method (200) for adaptively managing bias of an RF power amplifier (102) is provided. The system (100) incorporates a controller (116) configured to select a radio operating mode. A current-mirror circuit (114) is coupled to the controller (116) and configured to produce a reference current (IRef) as a function of the radio operating mode. A bias regulator (104) is coupled to the controller (116) and the current-mirror circuit (114) and configured to produce a driver-stage bias current (Ib1) and an output-stage bias current (Ib2) for the power amplifier (102) in response to the reference current (IRef). The system (100) also incorporates a DC-to-DC converter (118) coupled to the controller (116) and configured to provide a supply voltage (Vcc) for the power amplifier (102) in response to the radio operating mode. The system (100) also incorporates an envelope detector (120) configured to produce an envelope current (IEnv) in response to an RF input signal (126). The system (100) causes the reference current (IRef) to vary as a function of the envelope current (IEnv).

摘要翻译： 提供了一种用于自适应地管理RF功率放大器（102）的偏置的系统（100）和方法（200）。 系统（100）包括被配置为选择无线电操作模式的控制器（116）。 电流镜电路（114）耦合到控制器（116）并被配置为产生作为无线电操作模式的函数的参考电流（IRef）。 偏置调节器（104）耦合到控制器（116）和电流镜电路（114），并被配置为产生用于功率放大器的驱动级偏置电流（Ib1）和输出级偏置电流（Ib2） （102）响应于参考电流（IRef）。 系统（100）还包括耦合到控制器（116）并被配置为响应于无线电操作模式而为功率放大器（102）提供电源电压（Vcc）的DC-DC转换器（118）。 系统（100）还包括被配置为响应于RF输入信号（126）产生包络电流（IEnv）的包络检测器（120）。 系统（100）使得参考电流（IRef）作为包络电流（IEnv）的函数而变化。

公开(公告)号：US5014326A

公开(公告)日：1991-05-07

申请号：US318736

申请日：1989-03-03

申请人： James B. Turner ,  Roderick J. McInnis

发明人： James B. Turner ,  Roderick J. McInnis

IPC分类号： G09G3/02

CPC分类号： G09G3/02

摘要： An apparatus for correcting deviations in image linewidth in a image projection system having a laser and a liquid crystal cell wherein images are made on the liquid cyrstal cell by impinging the laser on said cell. The apparatus also has apparatus for creating a test image having a plurality of lines of specific width on a liquid crystal cell and calculating the difference between the linewidth of the plurality of lines of said test image as created and as expected. Furthermore, apparatus are provided for modifying the period of the laser light based on said difference in linewidth between the plurality of lines (as created and as expected) to correct deviations in image linewidth, whereby deviations in image linewidth are substantially eliminated.

摘要翻译： 一种用于校正具有激光和液晶单元的图像投影系统中的图像线宽偏差的装置，其中通过将激光照射在所述单元上而在液体晶状体单元上形成图像。 该装置还具有用于创建在液晶单元上具有多条特定宽度线的测试图像的装置，并且计算所创建的和所期望的所述测试图像的多条线的线宽之差。 此外，提供了用于根据所述多条线之间的线宽的差异（如所产生和预期的）来修改激光周期的装置，以校正图像线宽中的偏差，由此基本上消除了图像线宽的偏差。

公开(公告)号：US20080003963A1

公开(公告)日：2008-01-03

申请号：US11479026

申请日：2006-06-30

申请人： James B. Turner

发明人： James B. Turner

IPC分类号： H04B1/18

CPC分类号： G06K19/07749 ,  H01L2224/48137 ,  H01L2924/01019 ,  H01L2924/10253 ,  H01L2924/1461 ,  H01L2924/00

摘要： A self-powered radio integrated circuit (IC) includes a radio IC node and an embedded antenna within a single IC package that is configurable for the transmission, receipt, and storage of data. The data is transmitted and received across a radio frequency band. A power source is mounted adjacent to the integrated circuit. The integrated circuit and the power source are included on the same chip carrier for inclusion in other systems.

摘要翻译： 自供电无线电集成电路（IC）包括可配置用于传输，接收和存储数据的单个IC封装内的无线电IC节点和嵌入式天线。 在无线电频带上发送和接收数据。 电源安装在集成电路附近。 集成电路和电源包含在同一芯片载体上，以便包含在其他系统中。

公开(公告)号：US07463205B2

公开(公告)日：2008-12-09

申请号：US11315543

申请日：2005-12-22

申请人： James B. Turner ,  Sean R. Mercer

发明人： James B. Turner ,  Sean R. Mercer

IPC分类号： H01Q1/27 ,  H01Q1/12

CPC分类号： H01Q1/273 ,  H01Q1/40 ,  H01Q9/16

摘要： An electronic device such as watch adapted for wireless communication, the electronic device using a dipole antenna, the dipole antenna having two component parts, each of which being disposed in respective parts of a two-part connecting band, such as a watchband of the electronic device.

摘要翻译： 诸如适用于无线通信的手表的电子装置，使用偶极天线的电子装置，具有两个部件的偶极天线，每个部件设置在两部分连接带的相应部分中，例如电子表 设备。

公开(公告)号：US07574186B2

公开(公告)日：2009-08-11

申请号：US11322598

申请日：2005-12-30

申请人： James B. Turner

发明人： James B. Turner

IPC分类号： H04B1/06

CPC分类号： G06K19/0723 ,  G06K7/10059

摘要： A radio frequency circuit is generated as an integrated circuit that is arranged to provide transmission, receipt, and storage of data. The data is transmitted and received across a radio frequency band. An antenna is included within the integrated circuit, wherein the antenna is manufactured at the time the integrated circuit is manufactured. A power source is mounted adjacent to the integrated circuit. The integrated circuit and the power source are encapsulated within the same integrated circuit package.

摘要翻译： 生成射频电路作为被配置为提供数据的发送，接收和存储的集成电路。 在无线电频带上发送和接收数据。 在集成电路内包括天线，其中天线在制造集成电路时制造。 电源安装在集成电路附近。 集成电路和电源封装在相同的集成电路封装内。

公开(公告)号：US5006973A

公开(公告)日：1991-04-09

申请号：US500745

申请日：1990-03-28

申请人： James B. Turner

发明人： James B. Turner

IPC分类号： H02M5/458

CPC分类号： H02M5/458 ,  Y02B70/145

摘要： A resonant, quasi-square wave, pulse width modulated (PWM) power source (33) for a connectorless power system is disclosed. The power source (33) supplies constant amplitude, fixed-frequency current to a supply loop (31) that is inductively coupled to a plurality of pickup loops (35), each of which supplies power to a remote unit, such as the seat regulator that supplies power to a group of commercial airplane seats (37). Precise, fixed-frequency control is provided by triggering a PWM with fixed-frequency sync pulses. Current control is provided by sensing the current applied to the supply loop, converting the magnitude of the sensed current to a voltage and using the voltage to control the width of the pulses produced by the PWM. The PWM pulses, in turn, control the width of the power pulses applied by the power source (33) to the supply loop (31). Stability and efficiency are improved by maintaining the output of the power source nearly resonant, i.e., maintaining the phase angle between the output voltage and current low. This is accomplished by determining the phase angle between the output voltage and current and using the result to control the magnitude of capacitance connected in series with the supply loop.

摘要翻译： 公开了一种用于无连接器电力系统的谐振，准方波，脉宽调制（PWM）电源（33）。 电源（33）将恒定幅度的固定频率电流提供给电感耦合到多个拾音器环（35）的供电回路（31），每个拾音器环（35）向远程单元（例如座椅调节器 为一组商用飞机座椅提供电力（37）。 通过触发具有固定频率同步脉冲的PWM来提供精确的固定频率控制。 通过感测施加到电源回路的电流，将检测到的电流的大小转换成电压并使用电压来控制由PWM产生的脉冲的宽度来提供电流控制。 PWM脉冲进而控制由电源（33）施加到电源回路（31）的功率脉冲的宽度。 通过保持电源的输出几乎共振来提高稳定性和效率，即保持输出电压和电流之间的相位角低。 这是通过确定输出电压和电流之间的相位角，并使用结果来控制与电源回路串联连接的电容的大小来实现的。

公开(公告)号：US4914539A

公开(公告)日：1990-04-03

申请号：US324205

申请日：1989-03-15

申请人： James B. Turner ,  Gary W. Roth

发明人： James B. Turner ,  Gary W. Roth

IPC分类号： H02M1/44 ,  H02M7/217

CPC分类号： H02M1/44 ,  H02M7/217 ,  Y02B70/1441

摘要： A regulator circuit for use with a connectorless power supply system in which power is inductively supplied to a plurality of remote loads. A sinusoidal current, at a frequency of 38 kHz, is provided by a power distribution system (10), and circulates through a supply loop (68), which is disposed under the floor of an aircraft cabin. Three parallel connected capacitors (78, 80, and 82) and a multi-turn coil (70) that is inductively coupled to the supply loop comprise a resonant tank circuit in which current circulates. The voltage developed across the tank circuit is half wave rectified, filtered, and supplied to a load connected circuit. An op-amp (134) compares the potential across the load to a regulated voltage. The output of the op-amp is used to control the period of time during which an N channel FET (96) shunts current to regulate the output voltage. Because the N channel FET is only permitted to shunt current to control the output voltage when the potential of the AC current flowing in the tank circuit passes through zero with a negative slope, the regulator circuit produces minimal EMI. The regulator circuit controls the output voltage with respect to variations in the inductive coupling between the supply loop and the pickup coil, and with respect to variations in the connected load.

摘要翻译： 一种与无连接器电源系统一起使用的调节器电路，其中电力被感应地提供给多个远程负载。 频率为38kHz的正弦电流由配电系统（10）提供，并且通过布置在飞行器机舱的地板下面的供应回路（68）循环。 三个并联的电容器（78,80和82）和感应耦合到电源回路的多匝线圈（70）包括电流循环的谐振回路。 在电路两端产生的电压进行半波整流，滤波并提供给负载连接电路。 运算放大器（134）将负载电位与调节电压进行比较。 运算放大器的输出用于控制N沟道FET（96）分流电流以调节输出电压的时间段。 因为当沟槽中流过的交流电流的电位以负斜率通过零点时，N沟道FET只允许分流电流来控制输出电压，所以调节器电路产生最小的EMI。 调节器电路相对于电源回路和拾取线圈之间的电感耦合的变化以及相对于连接负载的变化来控制输出电压。

公开(公告)号：US07599670B2

公开(公告)日：2009-10-06

申请号：US11186085

申请日：2005-07-21

申请人： James B. Turner

发明人： James B. Turner

IPC分类号： H01Q11/12

CPC分类号： H04B1/109 ,  H04B1/1027

摘要： DC power savings in a mobile communication device can be achieved by dynamically adjusting the biasing for a receiver based on the communication link quality. The output signal levels of at least one low noise amplifier (LNA) are monitored to identify the DC operating conditions for the LNA. Closed loop control of the DC biasing is adjusted based on a comparison between the monitored DC operating conditions and a reference signal. The output of the LNA is also coupled to a radio receiver section that is configured (e.g., SW or HW) to evaluate the link quality based on various criteria such as inter-modulation distortion, noise, interference, fading, etc. The reference signal that is used to control the DC biasing of the LNA is adjusted (periodically, continuously, or on demand) in response to the evaluated link quality. The dynamic biasing yields acceptable signal reception with low DC power consumption.

摘要翻译： 可以通过基于通信链路质量动态地调整接收机的偏置来实现移动通信设备中的直流功率节省。 监视至少一个低噪声放大器（LNA）的输出信号电平，以识别LNA的直流工作条件。 基于所监视的直流工作条件与参考信号之间的比较来调节直流偏置的闭环控制。 LNA的输出还耦合到被配置为（例如，SW或HW）的无线电接收器部分，以基于诸​​如互调失真，噪声，干扰，衰落等的各种标准来评估链路质量。参考信号 用于控制LNA的DC偏置的响应于所评估的链路质量而被调整（周期性，连续地或者按需）。 动态偏置产生可接受的信号接收，具有低直流功耗。

公开(公告)号：US20080208008A1

公开(公告)日：2008-08-28

申请号：US11712766

申请日：2007-02-28

申请人： James B. Turner

发明人： James B. Turner

IPC分类号： A61B5/04

CPC分类号： A61B5/0476 ,  A61B5/0006 ,  A61B5/02055 ,  A61B5/021 ,  A61B5/024 ,  A61B5/0402

摘要： A wireless body sensor device includes a number of small probes that are arranged about a wireless electronics system. The wireless electronics system can process bio-potential signals from the probes and communicate bio-potential data to another device such as a wireless telephone, wrist watch, personal data assistant (PDA), laptop computer or any other appropriate device. By forming the probes within a confined short range of the wireless electronics system, interference and noise is greatly reduced. The wireless electronics system includes signal amplifiers that increase the signal levels associated with the bio-potential probes so that the signals can be converted to bio-potential data through an analog-to-digital conversion (ADC) process. Once the bio-potential data is in digital form, the data can be processed by a digital signal processor (DSP), encoded into a signal transmission, and communicated to another device with a radio system and its corresponding antenna.

摘要翻译： 无线身体传感器装置包括围绕无线电子系统布置的许多小探针。 无线电子系统可以处理来自探针的生物潜能信号，并将生物潜能数据传送到另一设备，例如无线电话，手表，个人数据助理（PDA），膝上型计算机或任何其它合适的设备。 通过在无线电子系统的狭窄范围内形成探头，大大降低了干扰和噪声。 无线电子系统包括信号放大器，其增加与生物电位探针相关联的信号电平，使得信号可以通过模数转换（ADC）过程转换成生物电位数据。 一旦生物电位数据是数字形式，数据可以由数字信号处理器（DSP）处理，编码成信号传输，并且通过无线电系统及其对应的天线传送到另一个设备。

公开(公告)号：US5111513A

公开(公告)日：1992-05-05

申请号：US680297

申请日：1991-04-04

申请人： James B. Turner ,  Roderick J. McInnis

发明人： James B. Turner ,  Roderick J. McInnis

IPC分类号： G09G3/02

CPC分类号： G09G3/02

摘要： An apparatus for correcting deviations in image linewidth in a image projection system having a laser and a liquid crystal cell wherein images are made on the liquid crystal cell by impinging the laser on said cell. The apparatus also has apparatus for creating a test image having a plurality of lines of specific width on a liquid crystal cell and calculating the difference between the linewidth of the plurality of lines of said test image as created and as expected. Furthermore, apparatus are provided for modifying the period of the laser light based on said differences in linewidth between the plurality of lines (as created and as expected) to correct deviations in image linewidth, whereby deviations in image linewidth are substantially eliminated.

摘要翻译： 一种用于校正具有激光和液晶单元的图像投影系统中的图像线宽偏差的装置，其中通过将激光照射在所述单元上而在液晶单元上形成图像。 该装置还具有用于创建在液晶单元上具有多条特定宽度线的测试图像的装置，并且计算所创建的和所期望的所述测试图像的多条线的线宽之差。 此外，提供了用于基于所述多条线之间的线宽的差异（如所产生和预期的）来修改激光周期的装置，以校正图像线宽中的偏差，由此基本上消除了图像线宽的偏差。