Patents Examined by Arnold M. Kinkead
  • Patent number: 11750203
    Abstract: Methods of using vapor cells may involve providing a vapor cell including a body defining a cavity within the body. At least a portion of at least one surface of the vapor cell within the cavity may include at least one pore having an average dimension of about 500 microns or less, as measured in a direction parallel to the at least one surface. A vapor pressure of a subject material within the cavity may be controlled utilizing the at least one pore by inducing an exposed surface of a subject material in a liquid state within the at least one pore to have a shape different than a shape the exposed surface of the subject material in a liquid state would have on a flat, nonporous surface.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: September 5, 2023
    Assignee: Microchip Technology Incorporated
    Inventor: Robert Lutwak
  • Patent number: 11742799
    Abstract: A voltage controlled oscillator (VCO) has a VCO core and a tuning bank. The tuning bank includes first and second tuning capacitors. A main switch is coupled between the first and second tuning capacitors. The tuning bank also includes control switches that receive a control signal to selectively activate the tuning bank. The main switch receives a level-shifted control signal to activate the tuning bank.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: August 29, 2023
    Assignee: STMicroelectronics International N.V.
    Inventor: Kapil Kumar Tyagi
  • Patent number: 11734596
    Abstract: A method for performing long-range multi-qubit measurements in a quantum circuit utilizes a graph that maps qubits of the quantum circuit to nodes that are connected to one another by edges. The method provides for identifying sets of the nodes on the graph corresponding to sets of qubits targeted by multi-qubit operations in a quantum algorithm and for defining a group of edge-disjoint paths connecting the nodes of each set. The group of edge-disjoint paths is defined such that no two of the paths in the group share an edge. The method further provides for performing a set of operations to entangle the qubits corresponding to the to the identified set of nodes that are included in each path in the group and for performing the set of multi-qubit operations on the entangled sets of the qubits.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: August 22, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Vadym Kliuchnikov, Eddie Schoute, Alexander Vaschillo, Dmitry Vasilevsky, Michael Beverland
  • Patent number: 11736063
    Abstract: Systems and methods are provided for compensating for mechanical acceleration at a reference oscillator. A reference oscillator provides an oscillator output signal and an accelerometer on a same platform as the reference oscillator, such that mechanical acceleration at the reference oscillator is detected at the accelerometer to produce a measured acceleration. A filter assembly, having an associated set of filter weights, receives the measured acceleration from the accelerometer and provides a tuning control signal responsive to the measured acceleration to a frequency reference associated with the system. An adaptive weighting component receives the oscillator output signal of the reference oscillator and an external signal that is provided from a source external to the platform and adjusts the set of filter weights for the filter assembly based on a comparison of the external signal and the oscillator output signal.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: August 22, 2023
    Assignee: VIASAT, INC.
    Inventors: Branislav A. Petrovic, Michail K. Tsatsanis
  • Patent number: 11728770
    Abstract: A semiconductor device including a first inverter circuit connected in parallel to a crystal vibrating element; a second inverter circuit connected to the first inverter circuit so as to share an input therewith, and outputting an oscillation signal; and a wave filter connected to the second inverter circuit and having a passband that is determined in advance and includes an oscillation frequency of the oscillation signal.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: August 15, 2023
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Koki Nakanishi
  • Patent number: 11716055
    Abstract: An oscillator includes a resonator, sustaining circuit and detector circuit. The sustaining circuit receives a sense signal indicative of mechanically resonant motion of the resonator generates an amplified output signal in response. The detector circuit asserts, at a predetermined phase of the amplified output signal, one or more control signals that enable an offset-reducing operation with respect to the sustaining amplifier circuit.
    Type: Grant
    Filed: April 2, 2022
    Date of Patent: August 1, 2023
    Assignee: SiTime Corporation
    Inventors: Aaron Partridge, Sassan Tabatabaei, Lijun Chen, Kamran Souri
  • Patent number: 11714126
    Abstract: A detection circuit for detecting a clock signal includes a multiplexer, a digital-to-analog converter, a comparator, and a counter. The multiplexer outputs either a first signal or a second signal as a selection signal. The digital-to-analog converter outputs a reference voltage according to the selection signal. The comparator compares the clock signal to the reference voltage to generate a comparison signal. The counter counts a reference clock signal to generate an overflow signal, and resets the overflow signal according to the comparison signal. The overflow signal indicates the amplitude of the clock signal.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: August 1, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Cheng-Chih Wang
  • Patent number: 11705861
    Abstract: A first three state driver injects a first clock signal into a crystal through an input node during a startup phase of a crystal oscillator and a second three state driver injects a second signal into the crystal through an output node during the startup phase. The first and second signals are anti-phase signals. The crystal oscillator circuit includes a first amplifier that is used during starting up and steady-state operation and includes a second amplifier. The injection through the input and output nodes is disabled after a fixed time. After injection ends, the second amplifier is turned on if voltage on the output node has reached a desired voltage and left off otherwise. If the second amplifier is turned on, the second amplifier is turned off when the voltage on the output node reaches the desired voltage.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: July 18, 2023
    Assignee: Silicon Laboratories Inc.
    Inventors: Mohamed M. Elkholy, Francesco Barale, Tiago Pinto Guia Marques, Steffen Skaug, Håkon Børli
  • Patent number: 11705895
    Abstract: An apparatus comprises a first circuit, a second circuit, a first transistor, a second transistor, a third transistor, a first programmable resistance, and a second programmable resistance. The first circuit may be configured to generate a reference signal and a bias signal in response to a supply voltage and a first input signal. The first circuit generally provides supply noise rejection to variations in the supply voltage. The second circuit may be connected to the first circuit and a ring oscillator. The first transistor may be connected to the first circuit and configured to set a first reference current of the first circuit based on the first input signal and the first programmable resistance. The second transistor may be connected in parallel with the first transistor. The second transistor is generally diode-connected.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: July 18, 2023
    Assignee: Ambarella International LP
    Inventor: Yueh Chun Cheng
  • Patent number: 11704277
    Abstract: Systems and methods for efficiently routing qubits in a quantum computing system include selecting bubble nodes and routing qubits to the bubble nodes. The systems and methods further include dividing a system of nodes into regions and selecting a bubble node for each region. The systems and methods further include using super bubble nodes with reliable links connected to other super bubble nodes and bubble nodes to improve cross-region operations.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 18, 2023
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Majed Valad Beigi, Yasuko Eckert, Dongping Zhang
  • Patent number: 11699974
    Abstract: A frequency synthesizer on an integrated circuit provides a local oscillator (LO) signal for RF operations and also functions as an injection clock signal source during crystal oscillator startup. The integrated circuit goes into a sleep mode in which the crystal oscillator is off and responsive to a wakeup event the crystal oscillator starts up again using the injection clock signal sourced from the frequency synthesizer. Parameters that cause the injection clock signal to match the crystal oscillator frequency are stored. The frequency synthesizer includes a phase-locked loop having an LC oscillator. A digital to analog converter controls the LC oscillator during injection. During an initial power up of the integrated circuit, a PLL in the frequency synthesizer locks to the crystal oscillator frequency to determine the parameters to store for injection.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: July 11, 2023
    Assignee: Silicon Laboratories Inc.
    Inventors: Mohamed M. Elkholy, Mustafa Koroglu, Wenhuan Yu
  • Patent number: 11683042
    Abstract: Described herein is an apparatus and a method for a low noise infinite radio frequency (RF) delayed-locked loop (DLL). The apparatus comprises a phase detector having a first input configured to receive a first RF signal, a second input, and an output; an infinite phase shifter having a first input configured to receive a second RF signal, an input bus, and an output connected to the second input of the phase detector; and a controller having a first input connected to the output of the phase detector and an output bus connected to the input bus of the infinite phase detector, wherein the output of the infinite phase shifter comprises a low noise signal in phase alignment with the first RF signal.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: June 20, 2023
    Assignee: Raytheon Company
    Inventors: James Dervay, Gary Ian Moore
  • Patent number: 11677406
    Abstract: In a described example, an apparatus includes a package substrate having a device side surface and a board side surface opposite the device side surface, a physics cell mounted on the device side surface having a first end and a second end, a first opening extending through the package substrate and lined with a conductor, aligned with the first end, a second opening extending through the package substrate and lined with the conductor, aligned with the second end, a millimeter wave transmitter module on the board side, having a millimeter wave transfer structure including a transmission line coupled to an antenna aligned with the first opening, and a millimeter wave receiver module mounted on the board side surface of the package substrate and having a millimeter wave transfer structure including a transmission line coupled to an antenna for receiving millimeter wave signals, aligned with the second opening.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: June 13, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Juan Alejandro Herbsommer, Nikita Mahjabeen, Hassan Omar Ali, Meysam Moallem
  • Patent number: 11671056
    Abstract: A crystal oscillator and a phase noise reduction method thereof are provided. The crystal oscillator may include a crystal oscillator core circuit, a first bias circuit and a phase noise reduction circuit, the first bias circuit is coupled to an output terminal of the crystal oscillator core circuit, and the phase noise reduction circuit is coupled to the output terminal of the crystal oscillator core circuit. In operations of the crystal oscillator, the crystal oscillator core circuit is configured to generate a sinusoidal wave. The first bias circuit is configured to provide a first voltage level to be a bias voltage of the sinusoidal wave. The phase noise reduction circuit is configured to reset the bias voltage of the sinusoidal wave in response to a voltage level of the sinusoidal wave exceeding a specific voltage range. For example, the specific voltage range is determined according to a second voltage level.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: June 6, 2023
    Assignee: MEDIATEK INC.
    Inventors: Sen-You Liu, Chien-Wei Chen, Keng-Meng Chang, Yao-Chi Wang
  • Patent number: 11671105
    Abstract: An accurate replica oscillator-based frequency tracking loop (FTL) is provided. The replica oscillator used in the FTL can be at a lower frequency and therefore can consume much lower power compared to a main oscillator, such as an injection locked oscillator (ILO). The proposed FTL accurately sets the free running frequency of an ILO across process, voltage and temperature (PVT). Techniques are also provided to compensate the gain and offset error between the replica oscillator and the ILO.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: June 6, 2023
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Abhishek Bhat, Romesh Kumar Nandwana, Kadaba Lakshmikumar, Pavan Kumar Hanumolu
  • Patent number: 11664787
    Abstract: A ring oscillator includes a first set of at least three laddered inverter quantizer (LIQAF) circuits connected in stages that are in series, including a first LIQAF circuit and a last LIQAF circuit, and a feedback circuit from the last LIQAF circuit to the first LIQAF circuit having a logical NOT output compared to the first LIQAF circuit. A voltage input creates a pair of phase shifted waveforms in the first of the at least three LIQAF circuits that propagate sequentially through the stages of the at least three LIQAF circuits. Each stage has a pair of outputs to the next stage that are then phase shifted from the previous stage in the next stage.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: May 30, 2023
    Assignee: Wayne State University
    Inventors: Mohammad Alhawari, Melvin D. Edwards, II
  • Patent number: 11646697
    Abstract: The invention relates to a resonator circuit, the resonator circuit comprising a transformer comprising a primary winding and a secondary winding, wherein the primary winding is inductively coupled with the secondary winding, a primary capacitor being connected to the primary winding, the primary capacitor and the primary winding forming a primary circuit, and a secondary capacitor being connected to the secondary winding, the secondary capacitor and the secondary winding forming a secondary circuit, wherein the resonator circuit has a common mode resonance frequency at an excitation of the primary circuit in a common mode, wherein the resonator circuit has a differential mode resonance frequency at an excitation of the primary circuit in a differential mode, and wherein the common mode resonance frequency is different from the differential mode resonance frequency.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: May 9, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Mina Shahmohammadi, Masoud Babaie, Robert Bogdan Staszewski
  • Patent number: 11641194
    Abstract: A circuit can include a first sub-circuit, a second sub-circuit, and a third sub-circuit. The first sub-circuit can store a reset state or a set state, and can include a first Josephson junction (JJ), a second JJ, and a third JJ coupled in parallel using superconducting inductors. The first JJ, the second JJ, and the third JJ can be biased using a JJ-based current source. The second sub-circuit can switch the first sub-circuit to the set state in response to receiving a pulse. The third sub-circuit can switch the first sub-circuit to the reset state in response to receiving one or more pulses.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: May 2, 2023
    Assignee: Synopsys, Inc.
    Inventor: Stephen Robert Whiteley
  • Patent number: 11639916
    Abstract: A composite part (sandwich or monolithic), including a rigid outer surface, to which is integrated an electronic instrumentation circuit, the electronic instrumentation circuit including a piezoelectric transducer, connected to a coil, an electronic control circuit, connected to a coil positioned facing the coil. The coil is printed on an insulating layer, printed directly on the rigid outer surface, the coil is printed on an insulating layer, covering the coil and the transducer, conducting tracks are printed on an insulating layer printed on at least one portion of the coil to be connected to it, the electronic control circuit being attached to the rigid outer surface and being connected to the tracks.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 2, 2023
    Assignee: SAFRAN
    Inventors: Sabri Janfaoui, Rafik Hadjria
  • Patent number: 11637530
    Abstract: An oscillating element includes a substrate, negative resistance elements which are electrically connected to the substrate, antennas which are electrically connected one-to-one to each negative resistance element and which transmit or receive an electromagnetic wave, a pad electrically connected to a power supply source for supplying power to the antennas, and a conductor which electrically connects the pad and the antennas to each other. The conductor is constituted of a common wiring that is common to the antennas and individual wirings from the common wiring to each antenna. The individual wirings differ from each other with respect to a sectional area, resistivity, and a length in accordance with a position on the substrate of an antenna connected to each wiring to reduce a difference in wiring resistances caused based on a distance between the antenna connected to each wiring and the pad.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: April 25, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kokichi Fujimoto, Yoshinori Tateishi