Wave-shaping Patents (Class 333/20)
  • Patent number: 10634757
    Abstract: A harmonic phase standard includes an input connectable with a radio frequency (RF) signal source for receiving an RF signal, an output, a signal path extending between the input and the output for propagating the RF signal from the input to the output, and a logic gate, an amplifier and a nonlinear transmission line (NLTL) arranged along the signal path. The logic gate receives the RF signal and outputs a waveform having sharpened edges relative to the RF signal. The amplifier amplifies the waveform output by the logic gate. The NLTL receives the amplified waveform from the amplifier and is biased to shape the amplified waveform so as to add harmonic content to the amplified waveform.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: April 28, 2020
    Assignee: ANRITSU COMPANY
    Inventors: Jon Martens, Karam Noujeim
  • Patent number: 10320373
    Abstract: Some embodiments include a high voltage nonlinear transmission line comprising a high voltage input configured to receive electrical pulses having a first peak voltage that is greater than 10 kV; a plurality of circuit elements electrically coupled with ground, each of the plurality of circuit elements includes a nonlinear semiconductor junction capacitance device; a plurality of inductors, at least one of the plurality of inductors is electrically coupled between two circuit elements of the plurality of circuit elements; and a high voltage output providing a high voltage output signal that oscillates at a frequency greater than 100 MHz about a voltage greater than 10 kV.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: June 11, 2019
    Assignee: EAGLE HARBOR TECHNOLOGIES, INC.
    Inventors: James R. Prager, Timothy M. Ziemba, Kenneth E. Miller
  • Patent number: 10041883
    Abstract: A time-resolved fluorescence imaging (TRFI) system that images a target medium without lifetime fitting. Instead of extracting the lifetime precisely, the system images the fluorophore distribution to allow for a simple and accurate method to obtain the fluorescence image without lifetime-extraction for time-resolved fluorescence imaging. An illumination source circuit for TRFI is also disclosed that shapes the excitation pulse. In one embodiment, the illumination source comprises an LED and stub line configured for generating a linear decay profile.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 7, 2018
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Warren S. Grundfest, Oscar M. Stafsudd, Pei-Chi Jiang, Asael Papour, Zachary Deis Taylor, Maie St. John
  • Patent number: 9716440
    Abstract: Provided is a receiving circuit that operates in a power supply system different from a transmitting circuit outputting a transmission signal and receives the transmission signal through an AC coupling device where a primary coil through which the transmission signal flows and a secondary coil having a center tap to which a specified voltage is supplied from an external terminal are magnetically coupled, which includes a pulse width amplifier circuit that holds pulse signals appearing at both ends of the secondary coil for a specified period of time and outputs them as hold signals, respectively, and a differential amplifier that compares a voltage of the hold signal and a voltage of the hold signal and outputs a comparison result.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: July 25, 2017
    Assignee: RENASAS ELECTRONICS CORPORATION
    Inventors: Shunichi Kaeriyama, Kouichi Yamaguchi, Koichi Nose
  • Patent number: 9575683
    Abstract: Systems and methods of processing shaped data to include selectively performing a modification operation. The modification operation may be performed in response to determining that shaped data satisfies one or more shaping adjustment criteria. Shaping of data may be discontinued to at least a portion of a memory based on a health metric for the portion satisfying a threshold.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: February 21, 2017
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Stella Achtenberg, Eran Sharon
  • Patent number: 9554444
    Abstract: Method and device for adapting a series constant power system to operate constant voltage lighting.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 24, 2017
    Assignee: OV20 Systems
    Inventors: Phil Macbean, James Terry, James Sweet
  • Patent number: 9455753
    Abstract: A method and apparatus for frequency conversion. The apparatus includes a mixer configured to provide an output signal with a converted frequency, a local oscillator, and a non-linear transmission structure operably connected to the mixer and the local oscillator. The non-linear transmission structure is configured to cancel at least a portion of non-linearity of the mixer from the output signal and to modify a gain of the output signal. The local oscillator may provide a local oscillator signal to the non-linear transmission structure. The non-linear transmission structure may also be configured to modify the local oscillator signal to cancel at least the portion of the non-linearity of the mixer and to modify the gain of the output signal, and provide the modified local oscillator signal to the mixer.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: September 27, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tianzuo Xi, Daquan Huang
  • Patent number: 9412829
    Abstract: A method for fabricating a semiconductor device includes: forming a metal pattern including nickel on a semiconductor layer, the metal pattern having upper and side surfaces; forming a mask pattern having an opening in which upper and side surfaces of the metal pattern therein being exposed; forming a barrier layer on the metal pattern exposed in the opening by a plating method; and forming a conducting layer on the barrier layer exposed in the opening.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 9, 2016
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Shuichi Nishizawa
  • Patent number: 9231560
    Abstract: A phased-array RF pulse generator is disclosed which includes a video-pulse generator arranged to generate video pulses each having a leading edge. An array of nonlinear and dispersive transmission lines, are arranged to generate RF pulses from the video pulses. At least one sensor is arranged to detect the leading edge of the video pulses after they have passed along the transmission lines. A phase controller is arranged to set the velocity of the video pulses in each transmission line to put the detected leading edges, and hence the generated RF pulses, into a desired phase relationship.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: January 5, 2016
    Assignee: MBDA UK LIMITED
    Inventors: Nigel Seddon, Philip Leslie Mason, Mark Owen
  • Patent number: 9099271
    Abstract: A method of configuring an electron gun for generating and injecting an electron beam into a linac accelerating waveguide operating in magnetic fringe fields of an MRI scanner in the absence of a magnetic shield is provided using an appropriately programmed computer to determining an anode drift tube diameter at an injection point of a linac according to a magnetic field value from an MRI scanner and to a predetermined current density, where the magnetic field has an isocenter, determining a transverse diameter of a Type M cathode in an electron gun, according to the anode drift tube diameter and the current density, and minimizing an emittance value in an electron beam of the electron gun at an entry point of the anode drift tube by optimizing the distance between the cathode and the anode, where the electron beam is along an axis of symmetry of the magnetic field.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: August 4, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Dragos E. Constantin, Rebecca Fahrig, Paul J. Keall
  • Patent number: 9041612
    Abstract: Implementations for exciting two or more modes via modal decomposition of a pulse by a wave launcher are generally disclosed.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: May 26, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Edip Niver, Mohamed A. Salem, Aladin H. Kamel
  • Publication number: 20150035614
    Abstract: A phased-array RF pulse generator is disclosed which includes a video-pulse generator arranged to generate video pulses each having a leading edge. An array of nonlinear and dispersive transmission lines, are arranged to generate RF pulses from the video pulses. At least one sensor is arranged to detect the leading edge of the video pulses after they have passed along the transmission lines. A phase controller is arranged to set the velocity of the video pulses in each transmission line to put the detected leading edges, and hence the generated RF pulses, into a desired phase relationship.
    Type: Application
    Filed: May 14, 2013
    Publication date: February 5, 2015
    Applicant: MBDA UK Limited
    Inventors: Nigel Seddon, Philip Leslie Mason, Mark Owen
  • Patent number: 8941447
    Abstract: A microwave pulse power switching system includes a waveguide switching section having stacked reduced height waveguides, wherein microwave pulse power introduced into a first port of the waveguide switching section is divided between and propagates through the stacked reduced height waveguides. At least one and preferably both of the stacked reduced height waveguides of said waveguide switching section are loaded with a non-reciprocal ferrite material. A magnetic field switching circuit, which can include electromagnets and a bifurcating web plate of the waveguide switching section, produces a switchable static magnetic field in the ferrite loaded reduced height waveguides. Actuation of the magnetic field switching circuit will cause pulse power that emerges from the second port of the waveguide switching section to be changed or “switched” relative to the pulse power introduced into the first port of the waveguide switching section.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: January 27, 2015
    Inventor: Ray M. Johnson
  • Patent number: 8866508
    Abstract: A system and method is disclosed for adaptively adjusting a driving strength of a signal between a first and second chip in a 3D architecture/stack. This may be used to adaptively calibrate a chip in a 3D architecture/stack. The system may include a transmission circuit on one chip and a receiver circuit on another chip. Alternatively, the system may include a transmission and receiver circuit on just one chip.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 21, 2014
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ying-Yu Hsu, Ruey-Bin Sheen, Chih-Hsien Chang
  • Patent number: 8754678
    Abstract: Apparatus and methods for quadrature clock signal generation are provided. In certain implementations, an apparatus includes an invertible sine shaping filter configured to receive an in-phase clock signal, a quadrature-phase clock signal, and an inversion control signal. The invertible sine-shaping filter is further configured to filter the in-phase and quadrature-phase clock signals to generate sinusoidal in-phase and quadrature-phase clock signals. The invertible sine-shaping filter is further configured to selectively invert one or both of the in-phase and quadrature-phase clock signals based on an inversion control signal. The apparatus further includes a phase interpolator configured to generate an interpolated clock signal based on a weighted sum of the selectively inverted sinusoidal in-phase clock signal and the quadrature-phase sinusoidal clock signal. The in-phase clock signal and the quadrature-phase clock signal have a quadrature-phase relationship.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 17, 2014
    Assignee: Analog Devices, Inc.
    Inventor: Robert Schell
  • Patent number: 8749100
    Abstract: In some embodiments, a method is disclosed that includes measuring a waveform of a power source side voltage of a circuit breaker; measuring a waveform of a transmission line side voltage of the circuit breaker; calculating a waveform of a voltage between contacts of the circuit breaker that is a difference between the waveform of the power source side voltage and the waveform of the transmission line side voltage; calculating a waveform of an absolute value of the waveform of the voltage between contacts; extracting a waveform of a component in a frequency band which is lower than a frequency of the power source and higher than a frequency of a DC component from the waveform of the absolute value; detecting a cycle of the extracted waveform; and closing the circuit breaker based on the cycle.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: June 10, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Koshizuka, Minoru Saito, Hiroyuki Maehara, Yoshimasa Sato
  • Patent number: 8674784
    Abstract: A microwave pulse compressor has an elongated, cross-sectionally oversized waveguide resonator for decreasing the attenuation of the resonator, thereby increasing the resonator's QO The increased Q of the resonator guide results in more stored energy and greater output pulse power. The pulse compressor is symmetrically constructed to suppress high order modes that can be generated in oversized waveguides.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: March 18, 2014
    Inventor: Ray M. Johnson
  • Publication number: 20140043107
    Abstract: Implementations for exciting two or more modes via modal decomposition of a pulse by a wave launcher are generally disclosed.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Applicant: New Jersey Institute of Technology
    Inventors: Edip Niver, Mohamed A. Salem, Aladin H. Kamel
  • Publication number: 20140035695
    Abstract: A Multi-Cycle Digital High Power Microwave (MCD-HPM) source includes a microwave transmission line (MTL) to which a plurality electrically charged thin film transmission lines (TFTL's) are connected by switches. The switches are activated in sequence to generate a square wave at a microwave output frequency. The activation signal is controlled by a free space time delay, which can vary the timing and/or routing of the activation signal by modifying at least one free space element, thereby adjusting the switch activation timing and varying the output frequency. In embodiments, the switches are photo-conducting switches, the activation signal is a laser beam, and the switch timing is varied by reorienting and/or repositioning mirrors and/or other elements in the free space time delay. The elements can be manually adjusted, or mounted on motorized stages and automatically controlled. Optical amplifiers can be included to compensate for losses in the time delay elements.
    Type: Application
    Filed: April 20, 2012
    Publication date: February 6, 2014
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Yannick C. Morel, John E. McGeehan, Clint J. Novotny, Simon Y. London
  • Patent number: 8546979
    Abstract: Pulse-generator circuits that permit independent control of pulse widths and the delays between successive pulses. In several embodiments, a pulse-generator subcircuit includes a transmission-line segment comprising first and second conductors, configured such that the first conductor is coupled to a first DC potential. The pulse-generator subcircuit further includes a terminating resistor coupled to a first end of the second conductor of the first transmission-line segment; this terminating resistor is matched to the characteristic impedance of the transmission-line segment. The pulse-generator subcircuit further includes first and second switches, controlled by first and second timing signals, respectively, and configured to selectively and independently connect respective first and second ends of the first conductor to a second DC potential.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 1, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Tammo Heeren, Fred Mercado
  • Patent number: 8509928
    Abstract: Method for producing a stationary wave field of arbitrary shape comprising the steps of defining at least one volume being limited in the direction of the axis of propagation of a beam, of the type 0?z?L; defining an intensity pattern within the said region 0?z?L by a function F(z), describing the said localized and stationary intensity pattern, which is approximated by means of a Fourier expansion or by a similar expansion in terms of (trigonometric) orthogonal functions; providing a generic superposition of Bessel or other beams highly transversally confined; calculating the maximum number of superimposed Bessel beams the amplitudes, the phase velocities and the relative phases of each Bessel beam of the superposition, and the transverse and longitudinal wavenumbers of each Bessel beam of the superposition.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: August 13, 2013
    Assignee: Bracco Imaging S.P.A.
    Inventors: Valerio Abate, Cesar Augusto Dartora, Hugo Enrique Hernàndez Figueroa, Marco Mattiuzzi, Kleber Zuza Nobrega, Michel Zamboni Rached, Erasmo Recami
  • Patent number: 8410859
    Abstract: A microwave generator and/or methods thereof. A microwave generator may include a plurality of connected sequential sections in cascade. A microwave generator may include a first section and an output section. Each section may include an intermediate conductor, an upper conductor and a lower conductor. A first isolating material having a first thickness may be connected between an intermediate conductor and an upper conductor. A second isolating material having a second thickness may be connected between an intermediate conductor and a lower conductor. A switch may be connected between an intermediate conductor and an upper conductor and/or a lower conductor, forming a switched thickness and an unswitched thickness. The unswitched thickness of an output section is larger than the unswitched thickness of the first section and the increase in unswitched thickness from the first section to the output section includes a monotonic increase.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: April 2, 2013
    Inventor: Oved S.F. Zucker
  • Patent number: 8373518
    Abstract: Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: February 12, 2013
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Publication number: 20120161895
    Abstract: A microwave pulse power switching system 11 includes a waveguide switching section 13 having stacked reduced height waveguides 27, 29, wherein microwave pulse power introduced into a first port of the waveguide switching section is divided between and propagates through the stacked reduced height waveguides. At least one and preferably both of the stacked reduced height waveguides of said waveguide switching section are loaded with a non-reciprocal ferrite material 31, 33. A magnetic field switching circuit, which can include electromagnets 41, 43 and a bifurcating web plate 25 of the waveguide switching section, produces a switchable static magnetic field in the ferrite loaded reduced height waveguides. Actuation of the magnetic field switching circuit will cause pulse power that emerges from the second port of the waveguide switching section to be changed or “switched” relative to the pulse power introduced into the first port of the waveguide switching section.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Inventor: Ray M. Johnson
  • Patent number: 8207634
    Abstract: A compact multi-cycle high power microwave generator and a method of using the generator to generate microwave signals is disclosed and claimed. The apparatus includes one or more charged transmission line sections. Each transmission line section includes a first conductor that is section-specific and a second conductor that is common to all of the sections. A switch is associated with each section, each switch being operatively connected to a respective one of the first conductors. The apparatus includes third, common conductor that is not charged and that is operatively connected to each of the first conductors through its respective switch. The apparatus further includes a load, with the second conductor, the third conductor, and the load being operatively connected. Thus, the number of section-specific conductors, the number of charged transmission line sections, and the number of switches are all equal. Engagement of the switches generates a multi-cycle microwave pulse.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: June 26, 2012
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 8183716
    Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: May 22, 2012
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 8093761
    Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 10, 2012
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 8093760
    Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 10, 2012
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 8010825
    Abstract: A jitter reduction circuit includes a signal line transmitting a first signal and having a plurality of sections, and a plurality of delay lines transmitting a second signal and provided in one-to-one correspondence to the sections of the signal line, wherein the plurality of delay lines is configured such that a delay of the second signal on a given one of the delay lines is set to a first delay in response to a first level of the first signal in a corresponding one of the sections, and is set to a second delay in response to a second level of the first signal in the corresponding one of the sections.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: August 30, 2011
    Assignee: Fujitsu Limited
    Inventor: Hirotaka Tamura
  • Patent number: 7986060
    Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: July 26, 2011
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 7986196
    Abstract: Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: July 26, 2011
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Simon Y. London, Oved Zucker
  • Patent number: 7935835
    Abstract: A compound of formula (I) Wherein X, Y, ring A, ring B, l, m, R1, R2, R4 and R5 are as defined herein, to supress intracellular signal transduction or cell activation induced by endotoxin and to suppress cell responses due to the intracellular signal transduction and cell activation such as an excess generation of inflammatory mediators such as TNF-?, pharmacologically acceptable salts therefor, a preparation method therefor, and a medicament containing the aforementioned substituted cycloalkene derivative as an active ingredient which is superior in prophylaxis and/or treatment of diseases such as sepsis (septic shock, disseminated intravascular coagulation, multiple organ failure and the like), that are associated with intracellular signal transduction or cell activation induced by endotoxin and to cell responses to the intracellular signal transduction and cell activation.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: May 3, 2011
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Tomio Kimura, Nobuyuki Ohkawa, Takayoshi Nagasaki, Atsuhiro Sugidachi, Osamu Ando
  • Publication number: 20110063043
    Abstract: A waveform shaping circuit enhances a rise of a waveform of a voltage applied to a load and includes an input unit to which the voltage is input; a supply unit configured to apply the voltage input from the input unit to the load; a first resistor connected in series between the input unit and the supply unit; a second resistor branch-connected to a portion between the input unit and the supply unit; and a stub connected to the first resistor or the second resistor and including a transmission path of a given length configured to shuttle the voltage by transmitting and reflecting the voltage as a voltage wave.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 17, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Setsuo YOSHIDA
  • Publication number: 20110018650
    Abstract: Implementations for exciting two or more modes via modal decomposition of a pulse by a wave launcher are generally disclosed.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Inventors: Edip Niver, Mohamed A. Salem, Aladin Hassan Kamel
  • Patent number: 7848222
    Abstract: A method for transmitting signals along an interconnect in a VLSI system comprising receivers is disclosed. The VLSI based systems operate in the high Giga hertz range. The signals are transmitted along the interconnect as a localized wave packet i.e. as a pulse. The interconnect may be either electrically linear or nonlinear in nature.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: December 7, 2010
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Pingshan Wang, Edwin C. Kan
  • Publication number: 20100188128
    Abstract: An initial pulse signal is split into a first pulse signal and a second pulse signal. The first pulse signal is delayed through a first impedance to generate a first delayed pulse signal. The first impedance attenuates the first delayed pulse signal to generate an attenuated pulse signal. The second pulse signal is delayed through a second impedance to generate a second delayed pulse signal. The first delayed pulse signal and the attenuated pulse signal are combined to generate the two-pulse response signal.
    Type: Application
    Filed: March 19, 2010
    Publication date: July 29, 2010
    Inventors: Haw-Jyh Liaw, Shwetabh Yerma
  • Patent number: 7764141
    Abstract: A non-linear waveguide comprises a transmission line including a first conductive line and a second conductive line; a first bias voltage supply connected with the transmission line; and one or more pairs of diodes connected between the first conductive line and the second conductive line, the one or more pairs of diodes including: a first diode having an anode connected with the first conductive line and a cathode connected with the second conductive line; a second diode having a cathode connected with the first conductive line and an anode connected with the second conductive line; and a second bias voltage supply connected between the anode of the second diode and the second conductive line.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: July 27, 2010
    Assignee: Anritsu Company
    Inventor: Karam Michael Noujeim
  • Publication number: 20100156558
    Abstract: A microwave pulse compressor has an elongated, cross-sectionally oversized waveguide resonator for decreasing the attenuation of the resonator, thereby increasing the resonator's QO The increased Q of the resonator guide results in more stored energy and greater output pulse power. The pulse compressor is symmetrically constructed to suppress high order modes that can be generated in oversized waveguides.
    Type: Application
    Filed: June 23, 2009
    Publication date: June 24, 2010
    Inventor: Ray M. Johnson
  • Patent number: 7733194
    Abstract: A modulator is provided that comprises a nonlinear transmission line (NLTL) that is bias modulated by a baseband signal. A given logic state of the baseband signal determines a delay amount of a first carrier signal through the NLTL. The modulator further comprises an impulse forming network (IFN) that includes a first NLTL that receives the first carrier signal delayed by the determined delay amount and a second NLTL that receives a second carrier signal having a fixed delay amount. The first NLTL and second NLTL within the IFN have opposite diode polarity configurations. The modulator further comprises a power combiner that converts a delta delay of the first carrier signal relative to the second carrier signal to a sharp impulse that represents the given logic state of the baseband signal.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: June 8, 2010
    Assignee: Northrop Grumman Space and Mission Systems Corporation
    Inventors: Xing Lan, Mark Kintis, Flavia S. Fong
  • Patent number: 7734271
    Abstract: Frequency converters include waveguides configured for a local oscillator (LO) signal, an intermediate frequency (IF) signal, and an RF signal. A multimode IF waveguide can be used for selectively coupling of an IF signal and to reduce signal contributions produced by the LO signal. Typically, the multimode waveguide is situated to that the IF signal and the LO signal propagate in different waveguide modes, and a selected one of these signals can be selectively attenuated. In some examples, a periodically stepped waveguide is used to enhance propagation of a selected waveguide mode or a lossy conductor is used to attenuate a selected waveguide mode.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: June 8, 2010
    Assignee: Picosecond Pulse Labs
    Inventors: Steven H. Pepper, John Ebner, Robert Norton
  • Patent number: 7696835
    Abstract: A communication system includes a transmitting device configured to transmit data and a receiving device configured to receive the data. The transmitting device includes first and second transmission lines and a differential signal outputter configured to generate differential signals from the microwave signal corresponding to the data, and to output one of the differential signals to the first transmission line and the other differential signal to the second transmission line. The receiving device includes third and fourth transmission lines and a converter. The differential signals are transmitted to the third and fourth transmission lines from the first and second transmission lines via line-to-line couplings. The converter then converts the differential signals into the microwave signal corresponding to the data, and outputs the converted microwave signal.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: April 13, 2010
    Assignee: Sony Corporation
    Inventors: Jun Sawai, Yujiro Ito, Nobuyuki Ishikawa
  • Patent number: 7692509
    Abstract: Conductor segments are positioned within a transmission line structure in order to generate microwave pulses. The conductor segments are switchably coupled to one or the other of the transmission lines or to each other, in parallel with the transmission line structure. Microwave pulses will be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments or successive groups of segments into the transmission lines. The induced waves travel uninterrupted along the transmission lines in a desired direction.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: April 6, 2010
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London
  • Patent number: 7679469
    Abstract: The impulse generator comprises a nonlinear transmission line capable of obtaining an impulse with a small half value width and a large amplitude, in which a plurality of transmission line units having a unit line unit and a diode are connected in series, a pulse generator connected to the transmission terminal of the nonlinear transmission line, and a bias-dependent element connected to the reception terminal of the nonlinear line, wherein the anode of the diode of the transmission line unit is connected to the transmission line and the cathode is connected to the ground, and one end of the bias-dependent element is connected to the reception terminal of the transmission line and the other end is biased to a negative potential.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: March 16, 2010
    Assignee: Fujitsu Limited
    Inventor: Yasuhiro Nakasha
  • Patent number: 7679475
    Abstract: A bandpass filter having a bandpass width appropriate for UWB, a high frequency module including the bandpass filter, and radio communication device including both is provided. The bandpass filter including a laminate composed of a plurality of dielectric layers 11; first and second ground electrodes arranged on the bottom and top surfaces, respectively, of the laminate; resonance electrodes 30a, 30b, and 30c arranged in an inter-digital structure on a first inter-layer surface of the laminate, one end of each of the resonance electrodes being grounded; an input coupling electrode 40a arranged on an inter-layer surface different from the first inter-layer surface of the laminate facing the resonance electrode 30a of the input stage in the inter-digital type; and an output coupling electrode 40b arranged on an inter-layer surface different from the first inter-layer surface of the laminate to face the resonance electrode 30b of the output stage.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: March 16, 2010
    Assignee: Kyocera Corporation
    Inventor: Hiromichi Yoshikawa
  • Patent number: 7653127
    Abstract: Bit-Edge Zero Forcing Equalizer. A novel solution is presented by which a BE-ZFE (Bit-Edge Zero Forcing Equalizer) is employed to drive an error term within a data signal to an essentially zero value. This new BE-ZFE looks at values of data that occur at the bit edges of a data signal and drives the associated error term to zero. The new BE-ZFE is appropriately implemented within communication systems that are phase (or jitter) noise limited. Some examples of such communication systems include high-speed serial links one type of which serviced using a SERDES (Serializer/De-serializer) where data that is originally in a parallel format is serialized into a serial data stream and then subsequently de-serialized back into a parallel data stream.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: January 26, 2010
    Assignee: XILINX, Inc.
    Inventors: Brian T. Brunn, Stephen D. Anderson
  • Publication number: 20100001807
    Abstract: Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 7, 2010
    Inventors: Simon Y. London, Oved Zucker
  • Patent number: 7633182
    Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: December 15, 2009
    Assignee: BAE Systems Advanced Technologies, Inc.
    Inventor: Simon Y. London
  • Patent number: 7612628
    Abstract: An ultrafast sampler includes a series of Schottky diodes configured with a coplanar waveguide to form a nonlinear transmission line (NLTL) that compresses a local oscillator input to form a series of strobe pulses. Strobe pulses of opposite polarity are capacitively coupled to sampling diodes to obtain samples of a signal applied to a signal input. The samples are directed along an intermediate frequency waveguide to, for example, a signal processor such as an oscilloscope, for storage and analysis. The intermediate frequency waveguide is configured so that conductors of the intermediate frequency waveguide receive signal samples of a common polarity and strobe samples of opposite polarities so that portions of strobe pulses delivered to a signal processor are distinguished from signal samples.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: November 3, 2009
    Assignee: Picosecond Pulse Labs
    Inventors: Agoston Agoston, John Ebner, Steven Pepper, Robert Norton
  • Patent number: 7612629
    Abstract: Comb generators include a nonlinear transmission line (NLTL) having one or more NLTL sections. Each NLTL section includes one or more nonlinear elements and transmission line portions that provide transmission line dispersion. Typically, the nonlinear elements are Schottky diodes, and a pulse forming bias network is configured to establish Schottky diode bias conditions using a periodic signal that is input to the comb generator. For input periodic signals at frequencies between about 500 MHz and 1 GHz, output signals are produced having substantial power in frequency components at frequencies up to at least about 50 GHz.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: November 3, 2009
    Assignee: Picosecond Pulse Labs
    Inventor: Steven H. Pepper
  • Patent number: 7583159
    Abstract: A bipolar pulse generator circuit generates bipolar pulses and provides an impedance transformation. The circuit is amenable for implementation in a variety of configurations depending on the size and pulse width requirements for the design. It also maximizes energy transfer and may be implemented in a straight forward, easy manner. The generator may be implemented with one or two switches in a three, five or more transmission line implementation and may include inductive stub, which is inherent element of transmission line transformers. The generator may also be implemented in a multi-layer folded configuration, with or without the addition of a ground potential conductor. The generator may also be implemented in stacked or/and balanced configurations.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: September 1, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. London