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    • 1. 发明授权
    • UWB multi-burst transmit driver for averaging receivers
    • 用于平均接收机的UWB多突发发射驱动器
    • US08315290B2
    • 2012-11-20
    • US12637551
    • 2009-12-14
    • Gregory E. Dallum
    • Gregory E. Dallum
    • H04B1/69H04B1/707H04B1/713
    • H04B1/71635
    • A multi-burst transmitter for ultra-wideband (UWB) communication systems generates a sequence of precisely spaced RF bursts from a single trigger event. There are two oscillators in the transmitter circuit, a gated burst rate oscillator and a gated RF burst or RF power output oscillator. The burst rate oscillator produces a relatively low frequency, i.e., MHz, square wave output for a selected transmit cycle, and drives the RF burst oscillator, which produces RF bursts of much higher frequency, i.e., GHz, during the transmit cycle. The frequency of the burst rate oscillator sets the spacing of the RF burst packets. The first oscillator output passes through a bias driver to the second oscillator. The bias driver conditions, e.g., level shifts, the signal from the first oscillator for input into the second oscillator, and also controls the length of each RF burst. A trigger pulse actuates a timing circuit, formed of a flip-flop and associated reset time delay circuit, that controls the operation of the first oscillator, i.e., how long it oscillates (which defines the transmit cycle).
    • 用于超宽带(UWB)通信系统的多突发发射机从单个触发事件产生精确间隔的RF突发序列。 发射机电路中有两个振荡器,门控突发速率振荡器和门控射频突发或射频功率输出振荡器。 突发速率振荡器产生用于所选发射周期的相对低频,即MHz的方波输出,并且驱动RF脉冲串振荡器,其在发射周期期间产生高得多的频率即GHz的RF脉冲串。 突发速率振荡器的频率设置RF突发分组的间隔。 第一个振荡器输出通过偏置驱动器到第二个振荡器。 偏置驱动器条件例如电平偏移,来自用于输入到第二振荡器的第一振荡器的信号,并且还控制每个RF突发的长度。 触发脉冲启动由触发器和相关联的复位时间延迟电路形成的定时电路,其控制第一振荡器的操作,即其振荡多长时间(定义发射周期)。
    • 3. 发明申请
    • UWB DELAY AND MULTIPLY RECEIVER
    • UWB延迟和多路接收器
    • US20100232472A1
    • 2010-09-16
    • US12637793
    • 2009-12-15
    • Gregory E. DallumGarth C. PrattPeter C. HaugenCarlos E. Romero
    • Gregory E. DallumGarth C. PrattPeter C. HaugenCarlos E. Romero
    • H04B1/69H04L27/08
    • H04B1/71637
    • An ultra-wideband (UWB) delay and multiply receiver is formed of a receive antenna; a variable gain attenuator connected to the receive antenna; a signal splitter connected to the variable gain attenuator; a multiplier having one input connected to an undelayed signal from the signal splitter and another input connected to a delayed signal from the signal splitter, the delay between the splitter signals being equal to the spacing between pulses from a transmitter whose pulses are being received by the receive antenna; a peak detection circuit connected to the output of the multiplier and connected to the variable gain attenuator to control the variable gain attenuator to maintain a constant amplitude output from the multiplier; and a digital output circuit connected to the output of the multiplier.
    • 超宽带(UWB)延迟和乘法接收机由接收天线形成; 连接到所述接收天线的可变增益衰减器; 连接到可变增益衰减器的信号分离器; 一个乘法器,其一个输入连接到来自信号分离器的未延迟信号,另一个输入连接到来自信号分离器的延迟信号,分离器信号之间的延迟等于来自其脉冲正在接收的脉冲的脉冲之间的间隔 接收天线; 连接到乘法器的输出并连接到可变增益衰减器的峰值检测电路,以控制可变增益衰减器以保持来自乘法器的恒定振幅输出; 以及与乘法器的输出连接的数字输出电路。
    • 5. 发明授权
    • High voltage electrical amplifier having a short rise time
    • 高电压放大器具有短的上升时间
    • US5049836A
    • 1991-09-17
    • US447454
    • 1989-12-07
    • David J. ChristieGregory E. Dallum
    • David J. ChristieGregory E. Dallum
    • H03F3/21H03F3/217H03F3/50
    • H03F3/2178H03F3/211H03F3/2171H03F3/50H03F2200/387H03F2200/541
    • A circuit, comprising an amplifier and a transformer is disclosed that produces a high power pulse having a fast response time, and that responds to a digital control signal applied through a digital-to-analog converter. The present invention is suitable for driving a component such as an electro-optic modulator with a voltage in the kilovolt range. The circuit is stable at high frequencies and during pulse transients, and its impedance matching circuit matches the load impedance with the output impedance. The preferred embodiment comprises an input stage compatible with high-speed semiconductor components for amplifying the voltage of the input control signal, a buffer for isolating the input stage from the output stage; and a plurality of current amplifiers connected to the buffer. Each current amplifier is connected to a field effect transistor (FET), which switches a high voltage power supply to a transformer which then provides an output terminal for driving a load. The transformer comprises a plurality of transmission lines connected to the FETs and the load. The transformer changes the impedance and voltage of the output. The preferred embodiment also comprises a low voltage power supply for biasing the FETs at or near an operational voltage.
    • 公开了一种包括放大器和变压器的电路,其产生具有快速响应时间的高功率脉冲,并响应通过数模转换器施加的数字控制信号。 本发明适用于驱动具有千伏范围内电压的电光调制器等元件。 该电路在高频和脉冲瞬变期间是稳定的,其阻抗匹配电路与负载阻抗与输出阻抗匹配。 优选实施例包括与用于放大输入控制信号的电压的高速半导体部件兼容的输入级,用于将输入级与输出级隔离的缓冲器; 以及连接到缓冲器的多个电流放大器。 每个电流放大器连接到场效应晶体管(FET),其将高压电源切换到变压器,变压器然后提供用于驱动负载的输出端子。 变压器包括连接到FET和负载的多个传输线。 变压器改变输出的阻抗和电压。 优选实施例还包括用于在操作电压处或其附近偏置FET的低电压电源。
    • 7. 发明申请
    • Ultra-wideband radios for time-of-flight-ranging and network position estimation
    • 用于飞行时间范围和网络位置估计的超宽带无线电
    • US20100225541A1
    • 2010-09-09
    • US11637388
    • 2006-12-11
    • Claudia A. HertzogFarid U. DowlaGregory E. DallumCarlos E. Romero
    • Claudia A. HertzogFarid U. DowlaGregory E. DallumCarlos E. Romero
    • G01S1/24
    • G01S5/0221G01S13/878
    • This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.
    • 本发明提供了一种新颖的高精度室内测距装置,其使用具有低功率和低成本电子器件的超宽带(UWB)RF脉冲。 本发明的独特之处在于其在时间和空间上利用多次测量以进行非常精确的测距。 本文使用的宽带无线电信号特别适合于在恶劣的RF环境中进行测距,因为尽管存在多径传播失真,但是它们允许信号重构。 此外,本文讨论的测距和定位技术直接涉及UWB定位中遇到的关于同步和采样的许多已知技术挑战。 在开发的方法中,可以通过在通道上重复距离测量来恢复噪声,损坏的信号,并且距离测量结合来自目标周围的许多位置,以使与间接飞行路径和通过壁传播相关联的范围偏差最小化 延误
    • 9. 发明授权
    • Ultra-wideband radios for time-of-flight-ranging and network position estimation
    • 用于飞行时间范围和网络位置估计的超宽带无线电
    • US07962150B2
    • 2011-06-14
    • US11637388
    • 2006-12-11
    • Claudia A. HertzogFarid U. DowlaGregory E. DallumCarlos E. Romero
    • Claudia A. HertzogFarid U. DowlaGregory E. DallumCarlos E. Romero
    • H04Q7/20
    • G01S5/0221G01S13/878
    • This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.
    • 本发明提供了一种新颖的高精度室内测距装置,其使用具有低功率和低成本电子器件的超宽带(UWB)RF脉冲。 本发明的独特之处在于其在时间和空间上利用多次测量以进行非常精确的测距。 本文使用的宽带无线电信号特别适合于在恶劣的RF环境中进行测距,因为尽管存在多径传播失真,但是它们允许信号重构。 此外,本文讨论的测距和定位技术直接涉及UWB定位中遇到的关于同步和采样的许多已知技术挑战。 在开发的方法中,可以通过在通道上重复距离测量来恢复噪声,损坏的信号,并且距离测量结合来自目标周围的许多位置,以使与间接飞行路径和通过壁传播相关联的范围偏差最小化 延误
    • 10. 发明授权
    • UWB delay and multiply receiver
    • UWB延迟和乘法接收
    • US08532235B2
    • 2013-09-10
    • US12637793
    • 2009-12-15
    • Gregory E. DallumGarth C. PrattPeter C. HaugenCarlos E. Romero
    • Gregory E. DallumGarth C. PrattPeter C. HaugenCarlos E. Romero
    • H04L27/08
    • H04B1/71637
    • An ultra-wideband (UWB) delay and multiply receiver is formed of a receive antenna; a variable gain attenuator connected to the receive antenna; a signal splitter connected to the variable gain attenuator; a multiplier having one input connected to an undelayed signal from the signal splitter and another input connected to a delayed signal from the signal splitter, the delay between the splitter signals being equal to the spacing between pulses from a transmitter whose pulses are being received by the receive antenna; a peak detection circuit connected to the output of the multiplier and connected to the variable gain attenuator to control the variable gain attenuator to maintain a constant amplitude output from the multiplier; and a digital output circuit connected to the output of the multiplier.
    • 超宽带(UWB)延迟和乘法接收机由接收天线形成; 连接到所述接收天线的可变增益衰减器; 连接到可变增益衰减器的信号分离器; 一个乘法器,其一个输入连接到来自信号分离器的未延迟信号,另一个输入连接到来自信号分离器的延迟信号,分离器信号之间的延迟等于来自其脉冲正在接收的脉冲的脉冲之间的间隔 接收天线; 连接到乘法器的输出并连接到可变增益衰减器的峰值检测电路,以控制可变增益衰减器以保持来自乘法器的恒定振幅输出; 以及与乘法器的输出连接的数字输出电路。