Delay Lines Including Elastic Surface Wave Propagation Means Patents (Class 333/150)
  • Patent number: 10353268
    Abstract: Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: July 16, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Seung-hoon Han, Won-taek Seo, Hae-kwan Oh, Hong-seok Lee, Eun-hyoung Cho, Kee-keun Lee
  • Patent number: 10181317
    Abstract: A high frequency ultrasound analog beamformer comprises a linear array of surface acoustic wave (SAW) devices formed on a single crystal piezoelectric substrate, such as a PMN-PT single crystal piezoelectric substrate. Each SAW device comprises ultrasound input and output electrode structures separated by a variable delay structure. The beamformer further comprises a delay controller operably connected to each variable delay structure to control the delay of each SAW device to dynamically focus signals received at each input electrode.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: January 15, 2019
    Assignee: DALHOUSIE UNIVERSITY
    Inventors: Jeremy Brown, Robert Bruce Alexander Adamson
  • Patent number: 10001460
    Abstract: A phasing adder and an ultrasound probe are disclosed. According to one implementation, the phasing adder includes a delay charge transferring unit and a delay adding unit. The delay charge transferring unit obtains signal charge in an amount obtained without amplifying according to charge generated in each of a plurality of piezoelectric elements. Each of the plurality of piezoelectric elements includes a piezoelectric body to generate charge according to sound pressure of input ultrasound. The delay charge transferring unit holds the signal charge for a predetermined amount of time. The delay adding unit executes phasing adding of an amount of the signal charge held for the predetermined amount of time in the delay charge transferring unit.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: June 19, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventor: Yuta Nakayama
  • Patent number: 9853622
    Abstract: A system that incorporates teachings of the present disclosure can include, for example, an apparatus having a matching network adapted to reduce a magnitude of a signal reflection at a port of the matching network. The matching network can have one or more controllable variable reactive elements. A controller can be adapted to determine reflection coefficient information from incident and reflected waves sampled at the port of the matching network, and follow at least one cycle of a coarse tune process for generating one or more control signals to tune one or more reactances of the one or more controllable variable reactive elements. Additional embodiments are disclosed.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 26, 2017
    Assignee: BlackBerry Limited
    Inventors: William E. McKinzie, III, Heinz Bachmann, Greg Mendolia
  • Patent number: 9764355
    Abstract: An underwater acoustic projector system that includes a linear array of acoustic projectors in close proximity such that the acoustic projectors interact with one another when they produce acoustic pressures, wherein each acoustic projector in the linear array is spaced apart from an adjacent acoustic projector by a respective distance, and wherein the respective distance between two acoustic projectors proximate the center of the linear array is greater than the respective distance between two acoustic projectors proximate the end of the linear array.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: September 19, 2017
    Assignee: Ultra Electronics Maritime Systems Inc.
    Inventors: Olivier Beslin, James Crawford, Matthew Gerard Mallay
  • Patent number: 9742555
    Abstract: A sender and a receiver includes first and second arrays of coupled oscillators, respectively, that are substantially identically constructed so as to exhibit substantially the same dynamical response to excitation. A chaotic waveform generated at the sender is transmitted to the receiver, which generates a second chaotic waveform, and compares the received waveform with the generated second waveform. If the first and second waveforms match the sender is an authorized sender. An integrated circuit includes an array of coupled oscillators that in combination generate a waveform in response to at least one excitation signal. The array of coupled oscillators represents, in response to application of the excitation signals, a multi-dimensional security key that is shared between the sender of the waveform and the receiver of the waveform.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: August 22, 2017
    Assignee: Nokia Technologies Oy
    Inventors: Nikolai Nefedov, Mikko A. Uusitalo, Markku A. Oksanen, Valtteri Niemi
  • Patent number: 9581708
    Abstract: An apparatus for estimating a property of a subsurface material includes a carrier configured to convey an acoustic wave guide though a borehole. The acoustic wave guide includes an acoustic plate configured to guide an acoustic wave along a path of the plate and an acoustic reservoir coupled to the acoustic plate and at least partially surrounding the acoustic plate. The acoustic reservoir has a mass greater than the mass of the acoustic plate and is configured to absorb acoustic wave leakage from the acoustic plate. A first acoustic transducer is coupled to the acoustic plate and configured to transmit an acoustic wave along the path. A second acoustic transducer is coupled to the acoustic plate and configured to receive the acoustic wave that travels along the path. A controller is configured to operate the first acoustic transducer and the second acoustic transducer in order to estimate the property.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 28, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Ehsan Khajeh, Roger R. Steinsiek, Ryan D. Green
  • Patent number: 9316790
    Abstract: A waveguide having a substrate, a first germanium sidewall and a second germanium sidewall. The waveguide is formed by growing the first germanium sidewall and second germanium sidewall on the substrate.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: April 19, 2016
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Robert L. Kamocsai, Vu A. Vu
  • Patent number: 9166548
    Abstract: A SAW filter is fabricated with input and output transducers on a piezoelectric substrate and an epoxy based photo-definable acoustic absorber on the substrate for suppressing unwanted acoustic waves. The photo-definable acoustic absorber has a viscosity in a range from about 50 centistokes to 12000 centistokes and a thickness from about 10 microns to 120 microns. One acoustic absorber includes an SU-8 family member epoxy.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: October 20, 2015
    Assignee: TriQuint Semiconductor, Inc.
    Inventors: George Grama, Suzanne Combe, Rodolfo Chang
  • Patent number: 9160299
    Abstract: An acoustic wave element includes a piezoelectric body, an input IDT electrode, an output IDT electrode, a propagation path provided between the input IDT electrode and the output IDT electrode, a first dielectric layer provided on the piezoelectric body so as to cover the input IDT electrode and the output IDT electrode, and a reactive portion provided on the propagation path and configured to react to a substance to be detected or a binding substance configured to bind with the substance to be detected. The main acoustic wave becomes, in the input IDT electrode and the output IDT electrode, a boundary acoustic wave that propagates between the piezoelectric body and the first dielectric layer, and becomes, in the propagation path, a surface acoustic wave that propagates on an upper surface of the propagation path.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: October 13, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Rei Goto, Hidekazu Nakanishi, Hiroyuki Nakamura
  • Patent number: 9116290
    Abstract: A waveguide having a substrate, a first germanium sidewall and a second germanium sidewall. The waveguide is formed by growing the first germanium sidewall and second germanium sidewall on the substrate.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 25, 2015
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Robert L. Kamocsai, Vu A. Vu
  • Patent number: 9044192
    Abstract: A system and method for assessing tissue health based on the viscoelastic properties of the tissue. Surface waves are induced in the tissue and their propagation characteristics are then measured. The tissue viscoelastic properties are then determined from the surface wave measurements using a surface model.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: June 2, 2015
    Assignee: MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
    Inventors: James F. Greenleaf, Mark R. Pittelkow, Randall R. Kinnick, Xiaoming Zhang
  • Patent number: 8991022
    Abstract: A method for manufacturing piezoelectric resonator devices according to the present invention includes the following steps: a wafer forming step of preparing a thick-walled wafer 30 integrally formed with multiple lower lid members 3; a bonding step of bonding crystal resonator plates 2 to one main surface 31 of the wafer 30 via a bonding material 5 and bonding upper lid members 4 on the crystal resonator plates via a bonding material 5; a thinning step of thinning the wafer 30 from the other main surface 37 of the wafer; an external terminal forming step of forming external terminals on the other main surface of the thinned wafer; and a dividing step of cutting the wafer between each adjacent pair of crystal resonators so that multiple crystal resonators are obtained.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: March 31, 2015
    Assignee: Daishinku Corporation
    Inventors: Syunsuke Satoh, Naoki Kohda
  • Patent number: 8881370
    Abstract: Inertial sensor having a body with first and second cavities on opposite sides thereof, a sensing element in the first cavity, electronic circuitry in the second cavity, electrical conductors interconnecting the sensing element and the circuitry, and leads connected electrically to the circuitry and extending from the body for mounting the sensor and making connections with the circuitry.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: November 11, 2014
    Assignee: Custom Sensors & Technologies, Inc.
    Inventors: William Paul Berger, Mark Andrew Collins, Michael Thomas Frazee, Thad W. (Marc) Smith, Robert Albert Anderson, Stuart John Knowles, Victor Dragotti
  • Patent number: 8872595
    Abstract: A binary bi-phase shift modulator having an input piezoelectric transducer and an output piezoelectric transducer connected in series between a radio frequency input and a radio frequency output. A fixed DC pole voltage having a first polarity is connected to one of the transducers. A DC switched pole voltage is connected to the other transducer which switches between the pole voltage of the first polarity and a pole voltage of the opposite polarity in accordance with a binary data signal. The polarity of the radio frequency input relative to the radio frequency output varies as a function of the polarity of the DC switched pole voltage.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 28, 2014
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Roger D. Kaul, Jeffrey S. Pulskamp, Ronald G. Polcawich, Sarah Bedair
  • Publication number: 20140125428
    Abstract: A switching device includes: a switch that selects and connects one of input-output terminals to a common terminal; and a delay line that is connected in parallel to the switch between two terminals of the input-output terminals and delays a signal by using an acoustic wave.
    Type: Application
    Filed: October 16, 2013
    Publication date: May 8, 2014
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Masafumi IWAKI
  • Patent number: 8699544
    Abstract: System and method for enabling the cohabitation of licensed and unlicensed communications devices. A method comprises at a receiver, receiving transmitted data, demodulating the transmitted data to produce spread symbols, despreading the spread symbols to produce received data, wherein the despreading comprises using an orthogonal sequence selected from a list of orthogonal sequences for use by all transmissions in the wireless network, and processing the received data.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: April 15, 2014
    Assignee: FutureWei Technologies, Inc.
    Inventor: Soo-Young Chang
  • Patent number: 8677604
    Abstract: A method of manufacturing a boundary acoustic wave device includes the steps of forming an electrode on a first medium layer, forming a second medium layer so as to cover the electrode on the first medium layer, and forming a sound absorbing layer on an external surface of the second medium layer. The sound absorbing layer has an acoustic velocity of transverse waves that is lower than an acoustic velocity of transverse waves of the second medium layer.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: March 25, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hajime Kando
  • Patent number: 8674790
    Abstract: A surface acoustic wave device includes: a sapphire substrate having a C-plane main surface; comb-like electrodes which excite surface acoustic waves formed on the main surface of the sapphire substrate; an aluminum nitride film which covers the comb-like electrodes and the main surface; and a silicon dioxide film which is formed on the surface of the aluminum nitride film.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 18, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Shuichi Kawano, Masashi Fujioka
  • Patent number: 8567041
    Abstract: A heated resonator includes a base substrate, a piezoelectric piece having a thickness and a top side and a bottom side, a first electrode on the top side, a second electrode opposite the first electrode on the bottom side, an anchor connected between the piezoelectric piece and the base substrate, and a heater on the piezoelectric material. A thermal resistor region in the piezoelectric piece is between the heater and the anchor.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: October 29, 2013
    Assignee: HRL Laboratories, LLC
    Inventor: Christopher S. Roper
  • Patent number: 8463185
    Abstract: A system is for encoding information on a passive surface acoustic wave (SAW) device. The system includes a requesting unit configured to wirelessly transmit an impulse signal. The impulse signal is a signal that includes only a single pulse. A SAW device has an interdigital transducer (IDT) configured to physically store coded data. The SAW device is configured to receive the impulse signal. In response to receiving the impulse signal, the SAW device excites the IDT to generate a coded signal that includes the stored coded data and frequency components at a fundamental frequency.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 11, 2013
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Patent number: 8421559
    Abstract: The present invention relates to the field of acoustic wave devices, and particularly to that of transducers capable of operating at very high frequencies, from a few hundred MHz to several gigahertz, and its subject is more particularly an interface acoustic wave device including at least two substrates and a layer of ferroelectric material, the latter being contained between a first electrode and a second electrode and having first positive-polarization domains and second negative-polarization domains, the first and second domains being alternated, wherein the assembly constituted by the first electrode, the layer of ferroelectric material, and the second electrode is contained between a first substrate and a second substrate.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: April 16, 2013
    Assignees: Etat Francais Represente par le Delegue General pour l'Armement, Centre Nationale de Recherche Scientifique, Université de Franche Comte
    Inventors: Roger Petit, Sylvain Ballandras, Emilie Courjon, Dorian Gachon
  • Patent number: 8397360
    Abstract: A method of adjustment on manufacturing of a monolithic oscillator including circuit elements and a BAW resonator, this method including the steps of: a) forming the circuit elements and the resonator and electrically connecting them; b) covering the resonator with a frequency adjustment layer; c) measuring the output frequency of the oscillator; d) modifying the thickness of the frequency adjustment layer to modify the output frequency of the oscillator.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: March 19, 2013
    Assignee: STMicroelectronics SA
    Inventors: Pierre Bar, Sylvain Joblot, Jean-Francois Carpentier
  • Patent number: 8381386
    Abstract: A method of manufacturing a boundary acoustic wave device includes the steps of forming an electrode on a first medium layer, forming a second medium layer so as to cover the electrode on the first medium layer, and forming a sound absorbing layer on an external surface of the second medium layer. The sound absorbing layer has an acoustic velocity of transverse waves that is lower than an acoustic velocity of transverse waves of the second medium layer.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: February 26, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hajime Kando
  • Patent number: 8356399
    Abstract: A method of protecting a resonating sensor is described. The protected resonating sensor may include at least one passive ultrasonically excitable resonating sensor unit. Each sensor unit has one or more vibratable members having a resonating frequency that varies as a function of a physical variable in a measurement environment. The sensor is protected by forming one or more protective chambers defined between a compliant member and the vibratable member(s). A substantially non-compressible medium is disposed within the protective chamber(s). The compliant member has a first side that may be exposed to a measurement environment and a second side that may be exposed to the substantially non-compressible medium. The substantially non-compressible medium may be a liquid or gel and is in contact with the vibratable member(s). When the medium is a liquid, the chamber is sealed. When the medium is a gel, the chamber may be sealed or non-sealed.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: January 22, 2013
    Assignee: Microtech Medical Technologies Ltd.
    Inventor: Shay Kaplan
  • Patent number: 8339219
    Abstract: The integration of surface acoustic wave (SAW) filters, microfabricated transmission lines, and sensors onto polymer substrates in order to enable a passive wireless sensor platform is described herein. Incident microwave pulses on an integrated antenna are converted to an acoustic wave via a SAW filter and transmitted to an impedance based sensor, which for this work is a photodiode. Changes in the sensor state induce a corresponding change in the impedance of the sensor resulting in a reflectance profile. Data collected at a calibrated receiver is used to infer the state of the sensor. Based on this principal, light levels were passively and wirelessly demonstrated to be sensed at distances of up to about 12 feet.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: December 25, 2012
    Assignee: Sandia Corporation
    Inventors: Jack L. Skinner, Eric Y Chu, Harvey Ho
  • Patent number: 8260204
    Abstract: A system is for encoding information on a passive surface acoustic wave (SAW) device. The system includes a requesting unit configured to wirelessly transmit an impulse signal. The impulse signal is a signal that includes only a single pulse. A SAW device has an interdigital transducer (IDT) configured to physically store coded data. The SAW device is configured to receive the impulse signal. In response to receiving the impulse signal, the SAW device excites the IDT to generate a coded signal that includes the stored coded data and frequency components at a fundamental frequency.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: September 4, 2012
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Patent number: 8176617
    Abstract: A method of making a resonating beam accelerometer (RBA). In an example process, a proof mass device and resonators are created from a quartz material. A direct bond is formed between the proof mass and the resonators by applying a predefined amount of pressure at a predefined temperature for a predefined amount of time. One or more damping plates are created from a quartz material. A direct bond is formed between the damping plates and the proof mass device. The proof mass device is created by applying a predefined amount of pressure at pressure at temperature to two bases, two proof mass portions, and a flexure. The proof mass bases are on opposite sides of the flexure. The proof mass portions are on opposite sides of the flexure. A gap is present between the proof mass bases and the proof mass portions.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: May 15, 2012
    Assignee: Honeywell International Inc.
    Inventor: John S. Starzynski
  • Patent number: 8099853
    Abstract: A method for manufacturing a boundary acoustic wave device prevents formation of discontinuous portions in a dielectric film without a significant decrease in the thickness of an IDT when the dielectric film is formed by deposition and without deterioration of electrical characteristics. The method includes the steps of forming an IDT on a piezoelectric substrate, forming a lower dielectric film so as to cover the IDT, conducting a planarizing step so as to smooth the rough surface of the lower dielectric film, and forming an upper dielectric film so as to cover the lower dielectric film of which the rough surface is smoothed.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: January 24, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hajime Kando, Naohiro Nodake, Masahiko Saeki, Toshiyuki Fuyutsume
  • Patent number: 8099048
    Abstract: A system is for encoding information on a passive surface acoustic wave (SAW) device. The system includes a requesting unit configured to wirelessly transmit an impulse signal. The impulse signal is a signal that includes only a single pulse. A SAW device has an interdigital transducer (IDT) configured to physically store coded data. The SAW device is configured to receive the impulse signal. In response to receiving the impulse signal, the SAW device excites the IDT to generate a coded signal that includes the stored coded data and frequency components at a fundamental frequency.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: January 17, 2012
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Patent number: 8074341
    Abstract: A method for manufacturing a boundary acoustic wave device includes the steps of preparing a laminated structure in which an IDT electrode is disposed at an interface between first and second solid media and reforming the first medium and/or the second medium by externally providing the laminated structure with energy capable of reaching the inside of the first medium and/or the second medium and thus adjusting a frequency of the boundary acoustic wave device. The above provides a boundary acoustic wave device manufacturing method that enables frequency adjustment to be readily performed with high accuracy.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: December 13, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hajime Kando, Masakazu Mimura
  • Patent number: 8009722
    Abstract: In a parametric G-Rake receiver, a method an apparatus computes initial estimates of one or more scaling parameters and initial combining weights for the parametric G-Rake receiver; estimates the SINR of a received signal based on a mean pilot symbol estimate and the initial combining weights; computes revised estimates for one or more scaling parameters based on the estimated SINR and the initial combining weights; and computes revised combining weights based on one or more revised scaling parameter estimates.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: August 30, 2011
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Tracy L. Fulghum
  • Patent number: 7925235
    Abstract: A communication system includes: a transmitter including a transmission circuit unit generating an RF signal for transmitting data and an electrical-field coupling antenna transmitting the RF signal as an electrostatic field or an induction field; a receiver including an electrical-field coupling antenna and a reception circuit unit subjecting an RF signal received by the electrical-field coupling antenna to reception processing; and a surface-wave propagation device including a plurality of linear surface-wave transmission lines for propagating a surface wave radiated from the electrical-field coupling antenna of the transmitter.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: April 12, 2011
    Assignee: Sony Corporation
    Inventors: Satoshi Konya, Takanori Washiro
  • Patent number: 7849582
    Abstract: An acoustic cavity of a surface acoustic wave (SAW) architecture is defined on a piezoelectric substrate by two acoustic reflectors are formed on a piezoelectric substrate. The surface acoustic wave architecture may include at least one alpha interdigitated transducer (IDT) at least three beta IDTs which are placed in acoustic series within the acoustic cavity. The alpha IDT is electrically coupled to a first interface. The beta IDTs are coupled in electrical and acoustic series and are associated with a second interface. At least three beta IDTs are adjacent one another. An additional reflector or an alpha IDT may be placed between two of the beta IDTs.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: December 14, 2010
    Assignee: RF Micro Devices, Inc.
    Inventors: Aleh Loseu, Jayanti Jaganatha Rao
  • Patent number: 7841064
    Abstract: A method of manufacturing an acoustic wave device includes forming a first sealing portion on a substrate having an acoustic wave element thereon so that a functional region, in which an acoustic wave oscillates, of the acoustic wave element acts as a first non-covered portion and a cutting region for individuating acts as a second non-covered portion, forming a second sealing portion on the first sealing portion so as to cover the first non-covered portion and the second non-covered portion, and cutting off the substrate and the second sealing portion so that the second non-covered portion is divided.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: November 30, 2010
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Shunichi Aikawa, Takumi Kooriike, Jyouji Kimura, Keiji Tsuda, Masayuki Kitajima, Kazunori Inoue, Takashi Matsuda
  • Patent number: 7755489
    Abstract: An intelligent packaging system utilizing acoustic wave devices includes an electronic module, a SAW ID, various passive SAW sensors and a printed antenna. The passive SAW sensors include a SAW pressure sensor, a SAW temperature sensor and one or more SAW chemical sensors for monitoring physical parameters of a package content. The electronic module generally includes a printed large area distributed electrical circuit, an impedance transformer and a SAW transponder for realizing passive wireless monitoring of the structural integrity of the package. A separate power harvesting antenna and/or a separate dual band antenna can generate radio frequency (RF) power for biasing components associated with the electronic module.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: July 13, 2010
    Assignee: Honeywell International Inc.
    Inventors: Ion Georgescu, Cornel Cobianu, Viorel-Georgel Dumitru
  • Patent number: 7750752
    Abstract: Programmable SAW filter module are provided to overcome undesirable drawbacks, limitations and shortcomings associated with “in-line” SAW filters, such as insertion loss, propagation loss and strong signal capture effects. The programmable SAW filter modules remove the SAW structure from the primary signal path, adding signal gain to drive the splitter and using the SAW portion of the circuit as a programmable impedance element. The programmable SAW filter module includes an amplifier, an impedance, a surface acoustic wave propagation element, a splitter, input and output IDT electrodes, input and output interdigitated transducers, means for gain control and a combiner to combine or sum the signals received from the output IDT electrodes and form an output signal. The input and output IDT's are fully integrated circuits comprising the power splitter and power combiner functions, the phase shift, and gain functions.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: July 6, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: John A. Kosinski
  • Patent number: 7747220
    Abstract: An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 29, 2010
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Patent number: 7721411
    Abstract: A method of manufacturing an acoustic wave device includes: forming a conductive pattern on a wafer made of a piezoelectric substrate having an acoustic wave element, the conductive pattern including a first conductive pattern being continuously formed on a cutting region for individuating the wafer, a second conductive pattern being formed on an electrode region where a plated electrode is to be formed and being connected to the acoustic wave element and a third conductive pattern connecting the first conductive pattern and the second pattern; forming an insulating layer on the wafer so as to have an opening on the second conductive pattern; forming the plated electrode on the second conductive pattern by providing an electrical current to the second conductive pattern via the first conductive pattern and the third conductive pattern; and cutting off and individuating the wafer along the cutting region.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: May 25, 2010
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Shunichi Aikawa, Jyouji Kimura, Keiji Tsuda, Kazunori Inoue, Takashi Matsuda
  • Patent number: 7606294
    Abstract: Channel quality can be detected accurately in a wireless transmission system such as an HSDPA method. In the case of estimating a channel quality of a signal transmitted by a Code Division Multiple Access method and of estimating the channel quality in a system having a synchronization channel not orthogonal to a channel receiving data, a noise component of a desired channel is estimated; degree of a noise component caused by the synchronization channel is estimated with respect to the estimated noise; and a channel quality of a receiving channel is detected based on the estimated degree of the noise component.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: October 20, 2009
    Assignee: Sony Ericsson Mobile Communications Japan, Inc.
    Inventor: Takeshi Kokubo
  • Patent number: 7555824
    Abstract: Methods for integrating quartz-based resonators with electronics on a large area wafer through direct pick-and-place and flip-chip bonding or wafer-to-wafer boding using handle wafers are described. The resulting combination of quartz-based resonators and large area electronics wafer solves the problem of the quartz-electronics substrate diameter mismatch and enables the integration of arrays of quartz devices of different frequencies with the same electronics.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: July 7, 2009
    Assignee: HRL Laboratories, LLC
    Inventors: David T. Chang, Randall L. Kubena
  • Patent number: 7469017
    Abstract: The present invention discloses a double TRU (Transceiver Unit) (45). The output signals from the power amplifiers (64, 84) are combined to one common output signal provided to an antenna arrangement (91). A DSP (Digital Signal Processor) (52, 72) of each TRU (50, 70) comprises means for a constant-envelope modulation scheme (54, 74) and a non-constant envelope scheme (53, 73). The DSP:s (52, 72) select the modulation scheme according to modulation information (49, 69). In such a way, a switching between different modulation schemes can be performed even on a time-slot basis. For non-constant-envelope modulation, the modulated signal is separated into two component signals. Each TRU (50, 70) takes care of the amplification of one component. A phase compensation of at least one of the TRU:s (50, 70) is performed in order to correct for different paths of phases of the power amplifiers (64, 84). The non-constant envelope modulated signal can also be a multi-carrier signal, e.g.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: December 23, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anders Granström, Gunnar Johansson
  • Patent number: 7463672
    Abstract: A radio communication method and system for transmitting multiple-user digital data information in a Code Division Multiple Access (CDMA) format over multipath and mutual-interfering channels to a receiving terminal with diversity antennas and equalization signal processing. At the receiving terminal, diversity antenna signals are grouped into time blocks and replicas are generated of the user-unique CDMA sequence signals for a set of K mutually interfering users. Within each time block the multiuser channel is estimated, equalization parameters are calculated, and decision-feedback equalization is used to produce multiuser estimates associated with a subset ? of the K users. These estimates are deinterleaved and error-correction decoded to recover transmitted digital data information for the subset of ? users.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: December 9, 2008
    Inventor: Peter Monsen
  • Patent number: 7369014
    Abstract: A surface acoustic wave device is provides and comprises a flexible substrate having a first side and a piezoelectric film attached to at least a portion of the first side of the flexible substrate. The piezoelectric film can have a first side and a second side. A surface acoustic wave circuit can adjoin at least a portion of the first side of the piezoelectric film. These devices can comprise thin and flexible substrates, such as polyimide to make the devices flexible. If adhesive is applied to the back of devices constructed in accordance with the invention, such devices can be adhered to almost any surface, even a curved surface. The devices of the present invention can be easily integrated with other devices.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: May 6, 2008
    Inventors: Joseph C. Fehsenfeld, Greg N. Miller, Jeffrey C. Andle
  • Patent number: 7352800
    Abstract: A method of Partial Parallel Interference Cancellation (PPIC) is provided for recursively eliminating the Multiple Access Interference from a received signal. Such method is to use a recursion way to eliminate all the Multiple Access Interference (MAI) one by one from the received signal. Moreover, the present invention is to take the output of the pre-stage as the input of the present stage with the recursion method so that we can use only one operating circuit to obtain the function the MAI eliminating.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: April 1, 2008
    Assignee: BenQ Corporation
    Inventors: Yih-Min Chen, Hsu-Ching Wang, Chun-Cheng Chen, Fu-Yen Kuo
  • Patent number: 7274729
    Abstract: A structure of a spectrum spreading communication device which solves the problem with the conventional spectrum spreading communication using Barker codes, etc., and limits the rise of the side-lobe of a correctional signal independently of the order of information codes by use of a code sequence having a code length of at least 14. The spectrum spreading communication device uses a pseudo-noise code having code length of at least 14 and a self-correlation side-lobe of not greater than 3 as a pseudo-noise code of a direct spreading communication device which uses the pseudo-noise codes whose polarities are inverted so as to deal with also digital information. Thus, even when the pseudo-noise code length is 14 or more, the side-lobe of the correction coefficient can be restricted. Accordingly, the error rate of the spectrum spreading communication device is reduced and the processing gain is improved.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: September 25, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Shiba, Akitsuna Yuhara, Yoshihiro Yamada, Yasuhiro Ohta
  • Patent number: 7262676
    Abstract: An electroacoustic component including a layer system disposed between two substrates and electroacoustic structures for exciting a guided bulk acoustic wave, the electroacoustic structures being devoid of cavities. The layer system includes a piezo-electric layer, at least one metal layer, and a planarizing layer, which includes a planar interface provided with a substrate disposed directly thereabove. Such a component can be produced at a low cost by direct wafer bonding of two wafers. The electroacoustic component structures are electrically connected to the external contacts through perpendicular electrical connections.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: August 28, 2007
    Assignee: EPCOS AG
    Inventors: Werner Ruile, Ulrike Rösler
  • Patent number: 7253706
    Abstract: A method for manufacturing a surface acoustic wave element including: forming a conductive film on a surface of a piezoelectric substrate; forming a photoresist film on the conductive film; printing a pattern by exposing and developing the pattern, which is originally provided on a photomask, onto the photoresist film by reduced projection; forming an electrode of a surface acoustic wave element by etching the conductive film using the patterned photoresist film as a mask; measuring a resonant frequency of the surface acoustic wave element formed on the piezoelectric substrate; calculating an anodic oxidation voltage based on an amount of anodic oxidation of the electrode that is calculated in advance from the measured resonant frequency and a preset target resonant frequency; and performing anodic oxidation based on the anodic oxidation voltage calculated in the voltage calculation step and finishing anodic oxidation after detecting an end-point of oxidation reaction of the electrode.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: August 7, 2007
    Assignee: Seiko Epson Corporation
    Inventor: Yuji Mitsui
  • Patent number: 7197086
    Abstract: A CDMA base station transmitter employing the Kahn envelope-elimination-and-restoration technique includes a switching amplifier adapted to linearly amplify the low-level baseband signal derived from the digital amplitude information portion of the digital CDMA signal to be transmitted downlink. In order to achieve the wide bandwidth and high dynamic range needed to linearly amplify the low-level baseband signal derived from the digital amplitude portion of the CDMA signal, a truncating circuit truncates a predetermined number of the least significant bits of each word of the digital amplitude portion before the amplitude portion is converted to a low-level baseband signal and is amplified by the switching amplifier. High resolution is restored to the amplified output by a power-dissipating post regulator at the output of the switching amplifier.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: March 27, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Michael John Rauh, Robert T. Whitacre
  • Patent number: 7194793
    Abstract: A method for adjusting a frequency characteristic of an edge reflection type surface acoustic wave device includes the step of obtaining a frequency characteristic of an edge reflection type surface acoustic wave device having a piezoelectric substrate. The edge reflection type surface acoustic wave device has a pair of edges of the piezoelectric substrate which define a predetermined distance therebetween. The piezoelectric substrate is cut at a position which defines a distance that is shorter than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be higher than the obtained frequency characteristic. The piezoelectric substrate is cut at a position which defines a distance that is longer than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be lower than the obtained frequency characteristic.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: March 27, 2007
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Michio Kadota, Yasunori Takakuwa, Seigo Hayashi, Junya Ago, Hideya Horiuchi, Mamoru Ikeura