Traveling Wave Type Patents (Class 330/4.6)
  • Patent number: 10026723
    Abstract: Methods, systems, and apparatus, including a photonic integrated circuit package, including a photonic integrated circuit chip, including a lumped active optical element; an electrode configured to receive an electrical signal, where at least one characteristics of the lumped active optical element is changed based on the electrical signal received by the electrode; a ground electrode; and a bond contact electrically coupled to the electrode; and an interposer bonded to at least a portion of the photonic integrated circuit chip, the interposer including a conductive trace formed on a surface of the interposer, the conductive trace electrically coupled to a source of the electrical signal; a ground trace; and a conductive via bonded with the bond contact of the photonic integrated circuit chip, the conductive via electrically coupled to the conductive trace to provide the electrical signal to the electrode of the photonic integrated circuit chip.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: July 17, 2018
    Assignee: Infinera Corporation
    Inventors: Peter W. Evans, John W. Osenbach, Fred A. Kish, Jiaming Zhang, Miguel Iglesias Olmedo, Maria Anagnosti
  • Patent number: 10008982
    Abstract: A radio frequency (RF) wave generator includes a nonlinear transmission line and a pulse generator. The nonlinear transmission line has in order an input section, a magnetic section, and an output section. The magnetic section includes a nonlinear magnetic material. The pulse generator is configured to provide an input pulse to the input section which is converted to an RF wave by the nonlinear transmission line. A waveform of the input pulse is such that the generated RF wave is parametrically amplified.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 26, 2018
    Assignee: ROCKWELL COLLINS, INC.
    Inventor: Alexander B. Kozyrev
  • Patent number: 9551686
    Abstract: A method and apparatus for non-invasive, real time analysis of physical and chemical properties of a medium employs electromagnetic waves induced by an excitation transducer within longitudinally magnetized strips of ferromagnetic film serving as a waveguide. A physical medium juxtaposed to the wave guide induces a charge center encountered by the pulsed electromagnetic waves. The characteristics of changes induced by the physical medium within the pulsed electromagnetic wave, such as permittivity and permeability effects, boundary oscillations and phase changes are read by detection transducers and transmitted to software for analysis of the characteristics of the physical medium.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: January 24, 2017
    Inventor: William F. Griffith
  • Patent number: 9293628
    Abstract: A semiconductor detector device comprising: a detector element comprising at least one active detector layer of piezoelectric semiconductor material; a stress inducing element arranged to act in use on the detector element to generate therein a predetermined pattern of stress, and consequently a predetermined electrical field via the piezoelectric effect. A method of fabrication and of operation of a semiconductor detector device embodying these principles are also described.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: March 22, 2016
    Assignee: Kromek Limited
    Inventors: Mohamed Ayoub, Ian Radley
  • Patent number: 9170440
    Abstract: Various optical isolators are disclosed. One embodiment provides an optical isolator comprising a waveguide that includes polymer magneto-optical media. In a particular embodiment, the waveguide is dimensioned for single mode operation in the selected isolation range. A cross-section of the waveguide is inhomogeneous in terms of magneto-optical materials. Polymer magneto-optical material is a part of the optical waveguide structure. The inhomogeneity induces the propagation constant shift, which is propagation-direction-dependent. An embodiment is characterized by a cutoff frequency for forward propagating waves that is different than the cutoff frequency for reverse waves; the dimensions and direction of magnetization of the waveguide can be tailored so that, in a particular embodiment, the cutoff frequency for forward propagating waves is lower than the cutoff frequency for reverse waves.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 27, 2015
    Assignee: Duke University
    Inventor: Tomoyuki Yoshie
  • Patent number: 8878626
    Abstract: A traveling wave kinetic inductance parametric amplifier comprises a superconducting transmission line and a dispersion control element. The transmission line can include periodic variations of its dimension along its length. The superconducting material can include a high normal state resistivity material. In some instances the high normal state resistivity material includes nitrogen and a metal selected from the group consisting of titanium, niobium and vanadium. The traveling wave kinetic inductance parametric amplifier is expected to exhibit a noise temperature below 100 mK/GHz.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: November 4, 2014
    Assignee: California Institute of Technology
    Inventors: Jonas Zmuidzinas, Peter K. Day
  • Patent number: 8742840
    Abstract: A travelling wave tube amplifier includes: a travelling wave tube comprising a cathode, a helix, an RF input, an RF output, and a plurality of collectors, and an electronic power conditioner providing power supply and electrode polarization to said travelling wave tube, wherein said electronic power conditioner comprises flexibility control means allowing to adjust, via control commands sent through a databus, the helix to cathode voltage and the collector voltages.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: June 3, 2014
    Assignee: Thales
    Inventors: Etienne Cuignet, Philippe Fayt, Emile Tonello
  • Patent number: 8525588
    Abstract: Various apparatuses and methods for a vacuum electronic device are disclosed herein. In one embodiment, a vacuum electronic device includes a vacuum housing, an array of slow wave structures inside the vacuum housing sharing a common electron beam tunnel, an electron beam input port at a first end of the common electron beam tunnel, and an electron beam output port at a second end of the common electron beam tunnel.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: September 3, 2013
    Assignee: InnoSys, Inc.
    Inventors: Ruey-Jen Hwu, Laurence P. Sadwick, Jishi Ren
  • Patent number: 8242696
    Abstract: Various apparatuses and methods for a vacuum electronic device are disclosed herein. In one embodiment, a vacuum electronic device includes a vacuum housing, an array of slow wave structures inside the vacuum housing sharing a common electron beam tunnel, an electron beam input port at a first end of the common electron beam tunnel, and an electron beam output port at a second end of the common electron beam tunnel.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: August 14, 2012
    Inventors: Ruey-Jen Hwu, Laurence P. Sadwick, Jishi Ren
  • Publication number: 20120098594
    Abstract: A traveling wave kinetic inductance parametric amplifier comprises a superconducting transmission line and a dispersion control element. The transmission line can include periodic variations of its dimension along its length. The superconducting material can include a high normal state resistivity material. In some instances the high normal state resistivity material includes nitrogen and a metal selected from the group consisting of titanium, niobium and vanadium. The traveling wave kinetic inductance parametric amplifier is expected to exhibit a noise temperature below 100 mK/GHz.
    Type: Application
    Filed: October 20, 2011
    Publication date: April 26, 2012
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Jonas ZMUIDZINAS, Peter K. DAY
  • Patent number: 7352506
    Abstract: A system for sensing characteristics of the environment is disclosed. Sensors utilize exponential growth of a signal initiated by interaction of a sensor element with characteristics of the environment. Specific substances in the environment can be detected. The sensor element may be intrinsically sensitive to the specific substance or can be coated with a material that is sensitive to the specific substance. The sensor component is designed such that it can be made to cause exponential growth of a system signal. The exponential growth of the sensor signal is produced by parametric amplification.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: April 1, 2008
    Inventor: Grover C. Wetsel
  • Patent number: 6281746
    Abstract: A microwave parametric amplifier uses a circulator to receive an input signal which is provided through a transfer port to an input signal resonant cavity. A pump signal, which is preferably a harmonic of the input signal, is received into a pump signal cavity which is defined by a barrier that is reflective to the pump signal and transmissive to the input signal. A non-linear medium is positioned within the pump signal cavity to produce carriers due to the energy of the pump signal. The input signal interacts with the carriers to produce an amplified input signal which is conveyed from the input signal cavity through the circulator to an output port of the circulator.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: August 28, 2001
    Assignee: Lockheed Martin Corporation
    Inventor: James Richard Wood
  • Patent number: 6265934
    Abstract: A Q-switched parametric cavity microwave amplifier has input and output ports for receiving an input signal and producing a switched amplified output signal. A pump signal, preferably at a harmonic of the input signal, is received through a pump signal port and provided to a pump signal cavity within a housing. The pump signal interacts with a non-linear medium to produce carriers. A frequency selective layer reflects the pump signal but permits the input signal to pass therethrough. The input signal interacts with the carriers produced in the non-linear medium to enhance the signal present within the resonant cavity for the input signal. This transfers energy from the pump signal to the lower frequency input signal. A Q-switch is positioned in series with the output waveguide to cause energy to be stored within the input signal cavity. When the Q-switch is opened, a pulse is produced representing an amplified version of the input signal.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: July 24, 2001
    Assignee: Lockheed Martin Corporation
    Inventor: James Richard Wood