Patents by Inventor Gregory E. Dallum
Gregory E. Dallum has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9146311Abstract: A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.Type: GrantFiled: November 18, 2013Date of Patent: September 29, 2015Assignee: Lawrence Livermore National Security, LLCInventors: Peter C Haugen, Gregory E Dallum, Patrick A Welsh, Carlos E Romero
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Publication number: 20140292555Abstract: A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.Type: ApplicationFiled: November 18, 2013Publication date: October 2, 2014Inventors: Peter C Haugen, Gregory E. Dallum, Patrick A. Welsh, Carlos E. Romero
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Patent number: 8587472Abstract: A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.Type: GrantFiled: March 30, 2011Date of Patent: November 19, 2013Assignee: Lawrence Livermore National Security, LLC.Inventors: Peter C. Haugen, Gregory E. Dallum, Patrick A. Welsh, Carlos E. Romero
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Patent number: 8532235Abstract: 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.Type: GrantFiled: December 15, 2009Date of Patent: September 10, 2013Assignee: Lawrence Livermore National Security, LLC.Inventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, Carlos E. Romero
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Patent number: 8355453Abstract: An ultra-wideband (UWB) dual impulse transmitter is made up of a trigger edge selection circuit actuated by a single trigger input pulse; a first step recovery diode (SRD) based pulser connected to the trigger edge selection circuit to generate a first impulse output; and a second step recovery diode (SRD) based pulser connected to the trigger edge selection circuit in parallel to the first pulser to generate a second impulse output having a selected delay from the first impulse output.Type: GrantFiled: December 14, 2009Date of Patent: January 15, 2013Assignee: Lawrence Livermore National Security, LLCInventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, Carlos E. Romero
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Patent number: 8315290Abstract: 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.Type: GrantFiled: December 14, 2009Date of Patent: November 20, 2012Assignee: Lawrence Livermore National Security, LLCInventor: Gregory E. Dallum
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Publication number: 20120189034Abstract: 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.Type: ApplicationFiled: December 14, 2009Publication date: July 26, 2012Inventor: Gregory E. Dallum
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Patent number: 8188841Abstract: A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.Type: GrantFiled: August 31, 2007Date of Patent: May 29, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Farid U. Dowla, Faranak Nekoogar, David M. Benzel, Gregory E. Dallum, Alex Spiridon
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Patent number: 8160118Abstract: A dual burst transmitter for ultra-wideband (UWB) communication systems generates a pair of precisely spaced RF bursts from a single trigger event. An input trigger pulse produces two oscillator trigger pulses, an initial pulse and a delayed pulse, in a dual trigger generator. The two oscillator trigger pulses drive a gated RF burst (power output) oscillator. A bias driver circuit gates the RF output oscillator on and off and sets the RF burst packet width. The bias driver also level shifts the drive signal to the level that is required for the RF output device.Type: GrantFiled: December 18, 2009Date of Patent: April 17, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, James M. Zumstein, Mark L. Vigars, Carlos E. Romero
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Patent number: 7962150Abstract: 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.Type: GrantFiled: December 11, 2006Date of Patent: June 14, 2011Assignee: Lawrence Livermore National Security, LLCInventors: Claudia A. Hertzog, Farid U. Dowla, Gregory E. Dallum, Carlos E. Romero
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Publication number: 20110013673Abstract: An ultra-wideband (UWB) dual impulse transmitter is made up of a trigger edge selection circuit actuated by a single trigger input pulse; a first step recovery diode (SRD) based pulser connected to the trigger edge selection circuit to generate a first impulse output; and a second step recovery diode (SRD) based pulser connected to the trigger edge selection circuit in parallel to the first pulser to generate a second impulse output having a selected delay from the first impulse output.Type: ApplicationFiled: December 14, 2009Publication date: January 20, 2011Inventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, Carlos E. Romero
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Publication number: 20100232472Abstract: 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.Type: ApplicationFiled: December 15, 2009Publication date: September 16, 2010Inventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, Carlos E. Romero
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Publication number: 20100225541Abstract: 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.Type: ApplicationFiled: December 11, 2006Publication date: September 9, 2010Inventors: Claudia A. Hertzog, Farid U. Dowla, Gregory E. Dallum, Carlos E. Romero
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Publication number: 20100166104Abstract: A dual burst transmitter for ultra-wideband (UWB) communication systems generates a pair of precisely spaced RF bursts from a single trigger event. An input trigger pulse produces two oscillator trigger pulses, an initial pulse and a delayed pulse, in a dual trigger generator. The two oscillator trigger pulses drive a gated RF burst (power output) oscillator. A bias driver circuit gates the RF output oscillator on and off and sets the RF burst packet width. The bias driver also level shifts the drive signal to the level that is required for the RF output device.Type: ApplicationFiled: December 18, 2009Publication date: July 1, 2010Inventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, James M. Zumstein, Mark L. Vigars, Carlos E. Romero
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Publication number: 20080252422Abstract: A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.Type: ApplicationFiled: August 31, 2007Publication date: October 16, 2008Inventors: Farid U. Dowla, Faranak Nekoogar, David M. Benzel, Gregory E. Dallum, Alex Spiridon
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Patent number: 5804921Abstract: An impulse forming circuit is disclosed which produces a clean impulse from a nonlinear transmission line compressed step function without customary soliton ringing by means of a localized pulse shaping and differentiating network which shunts the nonlinear transmission line output to ground.Type: GrantFiled: March 12, 1996Date of Patent: September 8, 1998Assignee: The Regents of the University of CaliforniaInventors: Thomas E. McEwan, Gregory E. Dallum
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Patent number: 5049836Abstract: 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.Type: GrantFiled: December 7, 1989Date of Patent: September 17, 1991Assignee: The United States of America as represented by the United States Department of EnergyInventors: David J. Christie, Gregory E. Dallum