With Distributed Parameter Resonator Patents (Class 331/96)
  • Patent number: 9768787
    Abstract: Systems and methods are provided for detection and compensation of dielectric resonator oscillator frequency drift. DRO frequency drift detection and compensation may comprise, for a received input signal, detecting one or more channels in the input signal, determine frequency offset for each of the detected channels; determining determine dielectric resonator oscillator (DRO) frequency drift based on combining frequency offsets of the detected channels, and determining, based on the DRO frequency drift, one or more adjustments for compensating for the DRO frequency drift. The DRO frequency drift may be determined based on analysis of an intermediate signal generated during processing of the input signal.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: September 19, 2017
    Assignee: MAXLINEAR, INC.
    Inventors: Sridhar Ramesh, Subramanian Anantharaman, Harish Maller
  • Patent number: 9290378
    Abstract: A method for fabricating a MEMS device includes providing a substrate having a front surface and a back surface, and forming a protruding engagement member on the front surface of the substrate. The protruding engagement member has an inner periphery defining a groove and an outer periphery. The method also includes forming a first trench having a first depth along the outer periphery, forming a patterned mask layer on the protruding engagement member covering the groove and exposing a portion of the first trench. The method further includes etching the exposed portion of the first trench to form a second trench having a second depth, removing the patterned mask layer, bonding the substrate with a MEMS substrate to form the MEMS device, and thinning the back surface to within the second depth. The method prevents dust from being deposited on the MEMS substrate as in the case of cutting.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: March 22, 2016
    Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Lushan Jiang, Xiaojun Chen, Xuanjie Liu, Liangliang Guo, Junde Ma
  • Patent number: 9239942
    Abstract: A structure for extending the field area of a device equipped with an RF tag reader. The structure can include at least one reader coupling area for inductively coupling with an RF tag reader, and at least one tag coupling area for inductively coupling with an RF tag, wherein the tag coupling area is disposed outside the field area of the RF tag reader, and the reader coupling area is conductively coupled to the tag coupling area such that a signal induced in the reader coupling area by the RF reader creates a signal in the tag coupling area, thereby inducing a signal in the tag, and allowing the RF reader to communicate with the tag.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: January 19, 2016
    Assignee: Avery Dennison Corporation
    Inventor: Ian J. Forster
  • Patent number: 9219299
    Abstract: A resonator is connected to a first plane which is one of a power plane and a ground plane, wherein the power plane and the ground plane are apart from each other in an up-down direction. The resonator comprises a connecting portion and a body portion. The connecting portion is connected to the first plane. The connecting portion extends in the up-down direction beyond a second plane, which is a remaining one of the power plane and the ground plane, while not being in electrical contact with the second plane. The body portion is connected to the connecting portion while not being in contact with the second plane. The body portion is arranged so that the second plane is located between the body portion and the first plane in the up-down direction.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: December 22, 2015
    Assignees: NEC TOKIN CORPORATION, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Koichi Kondo, Naoharu Yamamoto, Yoshitaka Toyota, Kengo Iokibe, Farhan Zaheed Mahmood
  • Patent number: 9112251
    Abstract: A microwave resonant cavity includes a conductive shell with a screw hole having first threads and a screw having second threads configured to engage with the screw hole. The conductive shell defines a volume, the screw extends into the volume, the microwave resonant cavity has a resonant frequency, and the movement of the screw changes the resonant frequency. The first threads have a first pitch, and at least a portion of the second threads has a second pitch different from the first pitch.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: August 18, 2015
    Assignee: Microelectronics Technology, Inc.
    Inventor: Wen Chi Fu
  • Patent number: 9107300
    Abstract: A resonant via structure is provided with a multilayer substrate, a signal via conductor and ground vias. The multilayer substrate includes conductor layers and a dielectric. The dielectric isolates each of the conductor layers. The signal via conductor is disposed through the multilayer substrate. The ground vias are disposed through the multilayer substrate and around the signal via conductor. The dielectric comprises two sections disposed between the signal via and ground vias, in the plane of conductor layers. The first section is disposed between the first layer and other layer of the conductor layers. The second section is disposed between the other layer and the last layer of the conductor layers.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: August 11, 2015
    Assignee: NEC CORPORATION
    Inventor: Taras Kushta
  • Patent number: 9035707
    Abstract: The switching element is provided in a state of being electromagnetically coupled to the cavity resonator of the high frequency oscillator; the bias voltage applying terminal is connected to one electrode of the switching element; another electrode of the switching element is electrically connected to the cavity resonator (the anode shell in FIG. 1); the metal plate having a size enough for reflecting an electric wave to be transmitted before and after the switching element in a high-frequency manner is provided at any one end of the switching element; and by applying a bias voltage to the switching element and varying that, a reactance of the switching element is changed and a resonance frequency of the cavity resonator is varied. By this method, an oscillation frequency can be varied greatly relative to a small change in a bias voltage.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: May 19, 2015
    Assignee: NEW JAPAN RADIO LTD
    Inventor: Hideyuki Obata
  • Patent number: 9013241
    Abstract: The present disclosure relates to nanoresonator oscillators or NEMS (nanoelectromechanical system) oscillators. A circuit for measuring the oscillation frequency of a resonator is provided, comprising a first phase-locked feedback loop locking the frequency of a controlled oscillator at the resonant frequency of the resonator, this first loop comprising a first phase comparator. Furthermore, a second feedback loop is provided which searches for and stores the loop phase shift introduced by the resonator and its amplification circuit when they are locked at resonance by the first loop. The first and the second loops operate during a calibration phase. A third self-oscillation loop is set up during an operation phase. It directly links the output of the controllable phase shifter to the input of the resonator. The phase shifter receives the phase-shift control stored by the second loop.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: April 21, 2015
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Patrick Villard
  • Patent number: 9000853
    Abstract: Integrated circuit devices include a packaged MEMS-based oscillator circuit, which is configured to support bidirectional frequency margining of a periodic output signal. This bidirectional frequency margining is achieved using a first signal to synchronize changes in a frequency of the periodic output signal and a second signal to control whether the changes in the frequency of the periodic output signal are incremental or decremental. In particular, the oscillator circuit may be configured so that each change in the frequency of the periodic output signal is synchronized to a corresponding first voltage transition of the first signal and a voltage level of the second signal may be used to control whether the changes in the frequency of the periodic output signal are incremental or decremental.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: April 7, 2015
    Assignee: Integrated Device Technology, Inc.
    Inventors: Nelson Arata, Harmeet Bhugra
  • Patent number: 9000851
    Abstract: A cavity resonator integrated on a monolithic microwave integrated circuit (MMIC) is provided. The cavity resonator includes a cavity defined by an upper metal surface and a lower metal surface embedded in a low conductivity semiconductor, and a plurality of discrete metal connections coupled between the upper and lower metal surfaces, and at least one port for coupling to the cavity electromagnetically.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: April 7, 2015
    Assignee: Hittite Microwave Corporation
    Inventors: Ekrem Oran, Ahmed Ibrahim, Michael Koechlin
  • Patent number: 8994463
    Abstract: A push-push oscillator circuit with a first oscillation branch with a first active device and a first tank adapted to provide a signal having a fundamental frequency f0, a second oscillation branch with a second active device and a second tank symmetrical to the first oscillation branch and adapted to provide a signal having the fundamental frequency f0. Output branches are coupled to the first oscillation branch and the second oscillation branch to provide signals having the second harmonic frequency 2f0 of the fundamental signal based on the signals having the fundamental frequency f0 and/or to provide signals having the fundamental frequency f0; The push-push oscillator circuit further comprises at least one terminal branch with a terminal adapted to provide a component of a differential signal having the second harmonic frequency 2f0 or the fundamental frequency f0. The at least one terminal branch comprises a RF stub.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: March 31, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Yin Yi, Hao Li, Saverio Trotta
  • Publication number: 20150048893
    Abstract: A method for exciting a resonator having a resonance frequency, the resonator is excited in a first period with a first frequency that differs from the resonance frequency by a first frequency difference is provided. During a second period, the resonator is excited with a second frequency that differs from the resonance frequency by a second frequency difference. The first frequency difference and the second frequency difference have different signs. Additionally, the amounts of the first frequency difference and of the second frequency difference differ from one another by less than 10% of the greater amount.
    Type: Application
    Filed: March 21, 2012
    Publication date: February 19, 2015
    Inventors: Oliver Heid, Timothy Hughes, Jennifer Sirtl
  • Patent number: 8922285
    Abstract: The invention relates to a radiofrequency oscillator which incorporates: a spin-polarized electric current magnetoresistive device (6), a terminal (18) for controlling the frequency or amplitude of the oscillating signal, a servo loop (34) connected between the output terminal and the control terminal for applying a control signal to the control terminal in order to slave a characteristic of the oscillating signal to a reference value, the servo loop (34) comprising: a sensor (36) of the amplitude of the oscillating signal oscillations, and a comparator (38) capable of generating the control signal according to the measured amplitude and the reference value.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: December 30, 2014
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, Centre National de la Recherche Scientifique
    Inventors: Dimitri Houssameddine, Bertrand Delaet, Marie-Claire Cyrille, Ursula Ebels, Michael Quinsat
  • Patent number: 8907731
    Abstract: A digitally-controlled oscillator circuit receives a digital value and generates a driving signal for driving an oscillator at a frequency according to the received digital value. A time-to-digital converter circuit receives a detection signal of oscillation of the oscillator, receives the driving signal, and detects a phase difference between the detection signal and the driving signal. A control circuit receives the detected phase difference and controls the frequency of the driving signal generated by the digitally-controlled oscillator circuit, such that the detected phase difference coincides with a predetermined resonant phase difference to resonate the oscillator.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: December 9, 2014
    Assignee: Denso Corporation
    Inventors: Shigenori Yamauchi, Takamoto Watanabe, Tomohito Terazawa
  • Patent number: 8896389
    Abstract: The present disclosure relates to an oscillation circuit including a differential negative resistance element, a resonance circuit connected to the differential negative resistance element, and a stabilization circuit connected in parallel with the negative resistance element to suppress parasitic oscillation. The stabilization circuit includes a variable shunt resistor and an adjusting device for adjusting the shunt resistor.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: November 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasushi Koyama, Ryota Sekiguchi
  • Patent number: 8884710
    Abstract: A system and method in accordance with the present invention provides a gyroscope incorporating an improved PLL technique. The improved PLL auto-corrects its own reference low-frequency noise, thereby eliminating this source of noise, improving the noise performance of the gyroscope and allowing a compact implementation. The net result is a gyroscope with improved bias stability that can meet noise requirements with a smaller footprint.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 11, 2014
    Assignee: Invensense, Inc.
    Inventors: Derek Shaeffer, Ahingsa Soukhaphanith
  • Patent number: 8847693
    Abstract: A system and method is disclosed that provides a technique for generating an accurate time base for MEMS sensors and actuators which has a vibrating MEMS structure. The accurate clock is generated from the MEMS oscillations and converted to the usable range by means of a frequency translation circuit.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 30, 2014
    Assignee: Invensense, Inc.
    Inventors: Joseph Seeger, Goksen G. Yaralioglu, Baris Cagdaser
  • Publication number: 20140266477
    Abstract: An oscillation device comprises a substrate and a plurality of resonance structures arranged on the substrate to resonate electromagnetic waves. Each of the plurality of resonance structures has a negative differential resistance device for generating electromagnetic waves, a first conductor arranged electrically in contact with the negative differential resistance device and a second conductor arranged electrically in contact with the negative differential resistance device and disposed on the opposite side to the first conductor with respect to the negative differential resistance device. Adjacently located resonance structures of the plurality of resonance structures are interconnected by means of a metal part adapted for capacitive coupling with the first conductors thereof. The plurality of resonance structures are arranged so as to be separated from each other at least by a distance not greater than a wavelength of electromagnetic waves to be oscillated by them.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryota Sekiguchi, Yasushi Koyama
  • Patent number: 8836438
    Abstract: An oscillator element according to one embodiment of the present invention includes a magnetoresistive element having a magnetization free layer, magnetization fixed layer, and a tunnel barrier layer. Provided on the magnetization free layer are a protection layer and an electrode having a point contact section where the electrode is partially in electrical contact with the protection layers. An interlayer insulating film is provided between the electrode and the protection layer. The area of the interface between the magnetization free layer and the tunnel barrier layer is larger than the surface area of the point contact section. Moreover, a portion of the protection layer in contact with the interlayer insulating film has a smaller thickness in a surface normal direction than the portion of the protection layer in contact with the electrode.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 16, 2014
    Assignee: Canon Anelva Corporation
    Inventor: Hiroki Maehara
  • Patent number: 8823460
    Abstract: The invention relates to a radiofrequency oscillator which incorporates: a spin-polarized electric current magnetoresistive device (6) for generating an oscillating signal at an oscillation frequency on an output terminal (10), and a terminal (18) for controlling the frequency or amplitude of the oscillating signal, and a feedback loop (44) comprising an amplifier (46) provided with: an input connected to the output terminal (10) of the magnetoresistive device (6) so as to amplify the portion of an oscillating signal detected at the output terminal, and an output connected to the control terminal (18) so as to inject onto said control terminal the amplified portion of the oscillating signal which is phase-related to the oscillating signal generated at the output terminal.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: September 2, 2014
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Dimitri Houssameddine, Bertrand Delaet, Marie-Claire Cyrille, Ursula Ebels, Michael Quinsat
  • Patent number: 8816785
    Abstract: An oscillator which oscillates electromagnetic waves includes a negative differential resistance element, a resonator configured to prescribe oscillation frequencies of the electromagnetic waves, a voltage modulation unit configured to modulate the negative differential resistance element, a stabilizing circuit configured to suppress parasitic oscillation, and a bias circuit, including a power supply and a line, used to control an operating point voltage of the negative differential resistance element. The voltage modulation unit is connected to the bias circuit through the stabilizing circuit.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryota Sekiguchi
  • Patent number: 8797107
    Abstract: A voltage controlled oscillator includes a split ring resonator (SRR) configured to have meta-material characteristics fabricated on a board, and an energy compensation circuit configured to cause resonant oscillation of the SRR. The energy compensation circuit is fabricated in the form of an integrated circuit.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: August 5, 2014
    Assignees: Electronics and Telecommunications Research Institute, Soongsil University-Industry Cooperation Foundation
    Inventors: Dong-Uk Sim, Young Jun Chong, Yong Moon, Hyeon Seok Jang
  • Patent number: 8791765
    Abstract: A Force-Mode Distributed Wave Oscillator (FMDWO) that provides accurate multiple phases of an oscillation, a Force Mode Distributed Wave Antenna as a radiating element, a Force-Mode Distributed Oscillator Amplifier (FMDOA) and an array of amplifiers capable of operating as a beam forming phased-array antenna driver. Two distinct force mode mechanisms, one delay-based and the other geometry-based, utilizing inverter amplifiers, inject an oscillation on independent conductor loops or rings via transmission lines forming a differential transmission medium for the oscillation wave. Once the oscillation wave is initiated through the forcing mechanisms, the oscillations continue uninterrupted independent of any external triggering.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: July 29, 2014
    Assignee: Waveworks, Inc.
    Inventors: Ahmed Emira, Ahmet Tekin, Damir Ismailov, Suat Utku Ay
  • Patent number: 8779864
    Abstract: An oscillator has a negative resistance element and a resonator along with a capacitor electrically connected in parallel with the negative resistance element relative to a power bias circuit, a capacitance of the capacitor being so selected as to suppress any parasitic oscillation due to the power bias circuit and allow oscillation at a resonance frequency due to the negative resistance element and the resonator.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiko Ouchi, Ryota Sekiguchi
  • Patent number: 8766733
    Abstract: A radiofrequency oscillator comprises: a free layer (4), a current injector (6) for injecting spin-polarized current into the free layer, this injector having a spin-polarized current injection face (16) directly in contact with the free layer, a magnetoresistive contact (8) having a measurement face (26) directly in contact with the free layer, in order to form, in combination with the free layer, a tunnel junction for measuring the precession of the magnetization of the free layer, a conducting pad (30) directly in contact with the free layer in order to make an electrical current flow through the injector without passing through the magnetoresistive contact. At least part of the measurement face (26) and part of the injection face (16) are placed facing each other on each side of the free layer (4).
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: July 1, 2014
    Assignees: Commissariat a l'energie atomique et aux energies alternatives, Centre National de la Recherche Scientifique
    Inventors: Marie Claire Cyrille, Bertrand Delaet, Ursula Ebels, Dimitri Houssameddine
  • Patent number: 8754717
    Abstract: An oscillator and a method of operating the same are provided, the oscillator may include a free layer, a pinned layer on a first surface of the free layer, and a reference layer on a second surface of the free layer. The free layer may have a variable magnetization direction. The pinned layer may have a pinned magnetization direction. The reference layer may have a magnetization direction non-parallel to the magnetization direction of the pinned layer.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-chul Lee, Sun-ae Seo, Un-hwan Pi, Kee-won Kim, Kwang-seok Kim
  • Patent number: 8742857
    Abstract: A plurality of inductance enhanced interweaved rotary traveling wave oscillators (RTWO) is disclosed. Portions of the transmission line conductors are increased in length and run in parallel. Because the currents in these portions travel in the same direction, the inductance of these inductors is increased. By controlling the length of the transmission line conductors in these areas compared to the lengths where the currents in the oscillators travel in opposite directions, the overall impedance of the oscillators can be increased. Increased impedance leads to lower power and lower phase noise for the oscillators. Additionally, the interweaved oscillators are phase-locked to each other.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: June 3, 2014
    Assignee: Analog Devices, Inc.
    Inventors: Andrey Martchovsky, Stephen Beccue, Anh Pham
  • Patent number: 8723611
    Abstract: The object of the invention is to provide an improved structure for a microelectromechanical (MEMS) resonator. According to a first aspect of the invention, the resonator structure in accordance with the invention has a characteristic frequency of oscillation in combination with a given mechanical amplitude, whereby to set said mechanical amplitude, in the resonator structure, by way anchoring at an anchor point located at a given point of the resonator structure substrate, a first element is adapted oscillatory and a second element is adapted oscillatory in such a manner that at least one of said first element and of said second element are arranged to oscillate synchronously with regard to said anchor point, whereby the location of said anchor point is selected to be substantially within the joint projection defined by the dimensions of said first and said second element.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Murata Electronics Oy
    Inventor: Ville Kaajakari
  • Patent number: 8698570
    Abstract: A passive frequency divider in a CMOS process. More specifically, an electrical distributed parametric oscillator to realize a passive CMOS frequency divider with low phase noise. Instead of using active devices, which are the main sources of noise and power consumption, an oscillation at half of the input frequency is sustained by the parametric process based on nonlinear interaction with the input signal. For example, one embodiment is a 20 GHz frequency divider utilizing a CMOS varactor and made in a 0.13 ?m CMOS process. In this embodiment: (i) without any dc power consumption, 600 mV differential output amplitude can be achieved for an input amplitude of 600 mV; and (ii) the input frequency ranged from 18.5 GHz to 23.5 GHz with varactor tuning. In this embodiment, the output phase noise is almost 6 dB lower than that of the input signal for all offset frequencies up to 1 MHz. Also, a resonant parametric amplifier with a low noise figure (NF) by exploiting the noise squeezing effect.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: April 15, 2014
    Assignee: Cornell University
    Inventors: Ehsan Afshari, Wooram Lee
  • Patent number: 8692624
    Abstract: A method is provided for tuning a microelectromechanical systems (MEMS) oscillator comprising an acoustic resonator and a tuning and amplification circuit arranged in a loop. The method comprises determining an initial oscillation frequency of the oscillator, modifying a capacitance of the tuning and amplification circuit according to the initial oscillation frequency, and adjusting a power level of the oscillator according to the modified capacitance.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: April 8, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: Michael Frank
  • Publication number: 20140077889
    Abstract: A wideband small-scale cavity oscillator includes a single resonating chamber, a negative resistance diode, at least one capacitive waveguide obstacle, and a tap. The single resonating chamber includes a length, width, and height. The length is greater than the width and height. The negative resistance diode is centrally disposed in the single resonating chamber, and the at least one capacitive waveguide obstacle is disposed in the single resonating chamber. The tap is disposed along the length of the single resonating chamber. A method of manufacturing a wideband small-scale cavity oscillator is provided, which includes providing a single resonating chamber including a length, width, and height, disposing a negative resistance diode centrally in the single resonating chamber, disposing at least one capacitive waveguide obstacle in the single resonating chamber, and disposing a tap along the length of the single resonating chamber.
    Type: Application
    Filed: September 19, 2012
    Publication date: March 20, 2014
    Applicant: ELECTROMAGNETIC TECHNOLOGIES INDUSTRIES, INC.
    Inventors: John Howard, Jennifer Howard
  • Patent number: 8638178
    Abstract: Methods of testing packaged thin-film piezoelectric-on-semiconductor (TPoS) microelectromechanical resonators having hermetic seals include measuring a quality factor (Q) of resonance of the packaged resonator at at least two unequal temperatures to determine whether a ?Q/?T is significantly different (e.g, by at least 50%) over a temperature range (?T) spanning a smallest and largest of the at least two temperatures. These measurements are performed for a packaged resonator having a QAIR<QTED, where QAIR is the quality factor of resonance of the packaged resonator due to air damping and QTED is the quality factor of resonance of the packaged resonator due to thermoelastic damping.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: January 28, 2014
    Assignee: Integrated Device Technology inc.
    Inventor: Ye Wang
  • Patent number: 8633774
    Abstract: Improvements in and relating to electronic pulse generation or oscillation circuitry based on a signal path exhibiting endless electromagnetic continuity and affording signal phase inversion in setting pulse duration or half-cycles of oscillation within time of signal traverse of said signal path, and having active switching means associated with said signal path to set rise and fall times of each said pulse or said half-cycle of oscillation, including for frequency adjustment by selective inductance and power saving without stopping pulse generation or oscillation.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: January 21, 2014
    Assignee: Analog Devices, Inc.
    Inventor: John Wood
  • Patent number: 8610512
    Abstract: A synthesizer includes a second frequency-synthesizing stage comprising a radiofrequency oscillator configured to oscillate at a frequency ?fo when it is synchronized with a signal s0(t), where ? is a rational number different from one such that ?f0=ft. The radiofrequency oscillator has a magnetoresistive device within which there flows a spin-polarized electrical current to generate a signal st(t) oscillating at the frequency ft on an output electrode connected to the rendering terminal. This device is formed by a stack of magnetic and non-magnetic layers, a synchronization terminal for synchronizing the frequency of the oscillating signal st(t) with the frequency of the signal received at the synchronization terminal. The synchronization terminal being connected to the output terminal of the first stage to receive the signal s0(t).
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: December 17, 2013
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Jean-Philippe Michel, Michaël Quinsat
  • Patent number: 8606376
    Abstract: A method of actuating a system comprising a movable component and an actuator configured to move the movable component comprises providing a control signal representative of a desired motion of the movable component. The control signal is supplied to one or more resonators. Each of the one or more resonators has a mode of oscillation representative of at least one elastic mode of oscillation of the system. The control signal is modified by subtracting from the control signal a signal representative of a response of the one or more resonators to the control signal. The actuator is operated in accordance with the modified control signal. Thus, undesirable elastic oscillations of the system which might occur if the system were operated with the original control system can be reduced.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: December 10, 2013
    Assignees: Mitutoyo Corporation, Bundesrepublik Deutschland, Endvertreten Durch den Präsidenten der Physikalisch-Technischen Bundesanstalt
    Inventors: Hartmut Illers, Kazuhiko Hidaka, Akinori Saito, Hans-Ulrich Danzebrink
  • Patent number: 8598813
    Abstract: Circuitry is presented for use in the pulse-forming lines of compact linear accelerators of charged particles. This presents devices that can provide high-voltage radio-frequency pulses in the range of from a few volts to megavolts for charged particle accelerators. The devices can use as input an external charge voltage and an optical pulse to create output RF pulses with a peak voltage that is increased over the input voltage. The exemplary embodiment presents a circuit of pulse forming lines for compact linear accelerator that includes an opto-switch and RF transmission lines that form a pulse shaper and a ladder-like pulse multiplier unit, with or without an output shaper.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: December 3, 2013
    Assignee: Compact Particle Acceleration Corporation
    Inventors: Vladimir Andreevich Joshkin, Antonios Zografos
  • Patent number: 8598957
    Abstract: Oscillators and methods of manufacturing and operating an oscillator are provided, the oscillators include a base free layer having a variable magnetization direction, and at least one oscillation unit on the base free layer. The oscillation unit may include a free layer element contacting the base free layer and having a width less than a width of the base free layer, a pinned layer element separated from the free layer element, and a separation layer element between the free layer element and the pinned layer element. A plurality of oscillation units may be arranged on the base free layer.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-chul Lee, Ung-hwan Pi, Kee-won Kim, Kwang-seok Kim
  • Patent number: 8581668
    Abstract: A negative resistance device for a multiphase oscillator is disclosed. The negative resistance device is coupled to taps of the multiphase oscillator so that it injects no energy into the oscillator when the oscillator is most sensitive to noise, thereby decreasing the phase noise of the oscillator. The negative resistance device also guarantees the direction of movement of a traveling wave past the taps of the multiphase oscillator.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 12, 2013
    Assignee: Analog Devices, Inc.
    Inventor: Andrey Martchovsky
  • Patent number: 8570112
    Abstract: A MEMS oscillator having a feedback-type oscillation circuit including a MEMS resonator and an amplifier, a voltage control unit operable to control a bias voltage applied to an oscillating member of the MEMS resonator, and an auto gain control unit which receives an output from the amplifier and, based on a level of the output, to output an amplitude control signal for controlling a gain of the amplifier to the amplifier such that the level of the output from the amplifier comes to be a predetermined level, wherein the voltage control unit controls the bias voltage applied to the oscillating member based on an operating temperature of the MEMS resonator such that a peak gain of the MEMS resonator comes to have a predetermined value regardless of the operating temperature, and the voltage control unit derives the operating temperature of the MEMS resonator by monitoring the amplitude control signal.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: October 29, 2013
    Assignee: Panasonic Corporation
    Inventors: Takehiko Yamakawa, Tomohiro Iwasaki, Kunihiko Nakamura, Keiji Onishi
  • Patent number: 8547181
    Abstract: An oscillator with adjustable oscillation frequency includes an active device showing a negative input resistance at a terminal, an oscillator circuit coupled to the terminal of the active device showing the negative input resistance, and an element with adjustable ohmic resistance by which the oscillation frequency of the oscillator is adjustable.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: October 1, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Rainer Weber, Ingmar Kallfass
  • Patent number: 8514027
    Abstract: A method of multi-stage substrate etching and a terahertz oscillator manufactured by using the method are provided. The method comprises the steps of forming a first mask pattern on any one surface of a first substrate, forming a hole by etching the first substrate using the first mask pattern as an etching mask, bonding, to the first substrate, a second substrate having the same thickness as a depth to be etched, forming a second mask pattern on the second substrate bonded, forming a hole by etching the second substrate using the second mask pattern as an etching mask, and removing an oxide layer having the etching selectivity between the first substrate and the second substrate.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chan Wook Baik, Jong Seok Kim, Seong Chan Jun, Sun Il Kim, Jong Min Kim, Chan Bong Jun, Sang Hun Lee
  • Publication number: 20130187721
    Abstract: An oscillation element includes an antenna for oscillation configured to oscillate electromagnetic waves, and multiple negative resistance elements electrically connected to the antenna in parallel, and the multiple negative resistance elements are disposed in only a place where the phases of electromagnetic waves oscillated therefrom are the common phase or opposite phase.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 25, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: CANON KABUSHIKI KAISHA
  • Patent number: 8482357
    Abstract: A transverse acoustic wave resonator includes a base, a resonator component, a number of driving electrodes fixed to the base and a number of fixing portions connecting the base and the resonator component. The resonator component is suspended above a top surface of the base and is perpendicular to the base. The driving electrodes are coupling to side surfaces of the resonator component. The resonator component is formed in a shape of an essential regular polygon. The driving electrodes and the resonator component jointly form an electromechanical coupling system for converting capacitance into electrostatic force. Besides, a capacitive-type transverse extension acoustic wave silicon oscillator includes the transverse acoustic wave resonator and a method of fabricating the transverse acoustic wave resonator are also disclosed.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: July 9, 2013
    Assignee: Memsensing Microsystems Technology Co., Ltd
    Inventors: Bin Xiao, Ping Lv, Wei Hu, Jia-Xin Mei, Gang Li
  • Publication number: 20130141175
    Abstract: A push-push oscillator circuit with a first oscillation branch with a first active device and a first tank adapted to provide a signal having a fundamental frequency f0, a second oscillation branch with a second active device and a second tank symmetrical to the first oscillation branch and adapted to provide a signal having the fundamental frequency f0. Output branches are coupled to the first oscillation branch and the second oscillation branch to provide signals having the second harmonic frequency 2f0 of the fundamental signal based on the signals having the fundamental frequency f0 and/or to provide signals having the fundamental frequency f0; The push-push oscillator circuit further comprises at least one terminal branch with a terminal adapted to provide a component of a differential signal having the second harmonic frequency 2f0 or the fundamental frequency f0. The at least one terminal branch comprises a RF stub.
    Type: Application
    Filed: August 26, 2010
    Publication date: June 6, 2013
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Yi Yin, Hao Li, Saverio Trotta
  • Patent number: 8451069
    Abstract: An oscillator having a negative resistance device and a resonator includes: a transmission line connected to the negative resistance device, a three-terminal device including a first terminal connected to the signal line side of the transmission line at a terminal part, a second terminal connected to the grounding line side of the transmission line and a third terminal receiving a control signal applied thereto; a first regulation unit for regulating the control signal to be applied to the third terminal; and a second regulation unit for regulating the voltage to be applied to the second terminal, the first and the second regulation unit being adapted to regulate respectively the control signal and the voltage so as to make the characteristic impedance of the transmission line and the impedance between the first and the second terminal show an impedance matching. The power consumption rate of the stabilizing circuit can be reduced.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Sekiguchi, Takeaki Itsuji
  • Patent number: 8441193
    Abstract: A highly-reliable electronic frequency tuning magnetron comprises an anode for forming a resonant cavity which is segmented into a plurality of spaces in an inner periphery side of a cylindrical anode shell, a cathode provided at the center of the anode shell along its cylindrical axial direction and an exhausted structure having a coaxial central conductor which is connected to the inside of the cavity of the anode shell and is coupled thereto in a high-frequency manner, wherein the coaxial central conductor is externally led through a wall of the exhausted structure via a through-hole and the through-hole is covered by a dielectric portion placed between an external conductor for constituting the coaxial central conductor and the central conductor, wherein a portion of the led coaxial central conductor is conductively connected to a switching element.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: May 14, 2013
    Assignee: New Japan Radio Co., Ltd.
    Inventors: Hideyuki Obata, Kunihiko Takahashi
  • Patent number: 8427247
    Abstract: An oscillator includes: a plurality of free layers and a non-magnetic layer disposed between the plurality of free layers. Each of the plurality of free layers has perpendicular magnetic anisotropy or in-plane magnetic anisotropy. Magnetization directions of the free layers are periodically switched such that a signal within a given frequency band oscillates.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 23, 2013
    Assignee: Samsung Electronics Co, Ltd.
    Inventors: Sung-chul Lee, Sun-ae Seo, Young-jin Cho, Ung-hwan Pi, Kwang-seok Kim, Ji-young Bae
  • Patent number: 8421545
    Abstract: Oscillators and methods of operating the same, the oscillators include a pinned layer having a fixed magnetization direction, a first free layer over the pinned layer, and a second free layer over the first free layer. The oscillators are configured to generate a signal using precession of a magnetic moment of at least one of the first and second free layers.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-seok Kim, Sung-chul Lee, Kee-won Kim, Sun-ae Seo, Ung-hwan Pi
  • Patent number: 8410858
    Abstract: Electronic circuitry comprising operational circuits of active switching type requiring timing signals, and conductive means for distributing said timing signals to the operational circuits, wherein the timing signal distribution means includes a signal path that has different phases of a drive signal are supplied via active means at different positions about the signal path where that path exhibits endless electro-magnetic continuity without signal phase inversion or has interconnections with another signal path having different substantially unidirectional signal flow where there is no endless electromagnetic continuity between those signal paths and generally has non-linear associated circuit means where the signal path is of a transmission line nature.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 2, 2013
    Assignee: Analog Devices, Inc.
    Inventor: John Wood
  • 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