Patents by Inventor Alberto Valdes

Alberto Valdes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180069309
    Abstract: A method and system of a configurable phased array transceiver are provided. A first beamforming unit is configured to provide a first beam. A second beamforming unit is configured to provide a second beam. A first bi-directional power controller is configured to combine or to split the first beam and the second beam. Each beamforming unit comprises a plurality of radio frequency (RF) front-ends, each front-end being configured to transmit and receive RF signals. Each beam is independently configurable to operate in a transmit (TX) or a receive (RX) mode.
    Type: Application
    Filed: May 16, 2017
    Publication date: March 8, 2018
    Inventors: Daniel J. Friedman, Joakim Hallin, Yahya Mesgarpour Tousi, Örjan Renström, Leonard Rexberg, Scott K. Reynolds, Bodhisatwa Sadhu, Stefan Sahl, Jan-Erik Thillberg, Alberto Valdes Garcia
  • Patent number: 9912061
    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 6, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20180061853
    Abstract: An amplifier circuit including a substrate layer and a plurality of lateral bipolar junction transistors positioned entirely above the substrate. The lateral bipolar junction transistors include a plurality of monolithic emitter-collector regions coplanar to each other. Each of the emitter-collector regions is both an emitter region of a first bipolar junction transistor a collector region of a second bipolar junction transistor from the lateral bipolar junction transistors. Accordingly, the lateral bipolar junction transistors are electrically coupled in series circuit at the emitter-collector regions.
    Type: Application
    Filed: August 28, 2016
    Publication date: March 1, 2018
    Inventors: Alberto Valdes Garcia, Tak H. Ning, Jean-Olivier Plouchart, Ghavam G. Shahidi, Jeng-Bang Yau
  • Publication number: 20180048264
    Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 15, 2018
    Inventors: Alberto Valdes Garcia, Bodhisatwa Sadhu, Jahnavi Sharma
  • Patent number: 9893212
    Abstract: A plate varactor includes a dielectric substrate and a first electrode embedded in a surface of the substrate. A capacitor dielectric layer is disposed over the first electrode, and a layer of graphene is formed over the dielectric layer to contribute a quantum capacitance component to the dielectric layer. An upper electrode is formed on the layer of graphene. Other embodiments and methods for fabrication are also included.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: February 13, 2018
    Assignee: International Business Machines Corporation
    Inventors: Zhihong Chen, Shu-Jen Han, Siyuranga O. Koswatta, Alberto Valdes Garcia
  • Publication number: 20180006855
    Abstract: A commutating circuit includes a single-ended mixer and a passive network. The single-ended mixer includes a differential local oscillator terminal. The passive network includes a plurality of inductors and a capacitor. The plurality of inductors can be coupled to the differential local oscillator terminal. The plurality of inductors can provide an impedance in accordance with a common mode or a differential mode. The commutating circuit can be implemented via a device, a system and/or a method.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 4, 2018
    Inventors: WOORAM LEE, JEAN-OLIVIER PLOUCHART, ALBERTO VALDES GARCIA
  • Patent number: 9837959
    Abstract: An apparatus comprises a digitally controlled circuit having a variable capacitance and a controller configured to adjust a magnitude of the variable capacitance of the digitally controlled circuit. The digitally controlled circuit comprises a plurality of gain elements, the plurality of gain elements comprising one or more positive voltage-to-frequency gain elements and one or more negative voltage-to-frequency gain elements. The controller is configured to adjust the magnitude of the capacitance by adjusting the gain provided by respective ones of the gain elements in an alternating sequence of the positive voltage-to-frequency gain elements and the negative voltage-to-frequency gain elements.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: December 5, 2017
    Assignee: International Business Machines Corporation
    Inventors: Herschel A. Ainspan, Mark A. Ferriss, Daniel J. Friedman, Alexander V. Rylyakov, Bodhisatwa Sadhu, Alberto Valdes-Garcia
  • Patent number: 9831830
    Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: November 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Alberto Valdes Garcia, Bodhisatwa Sadhu, Jahnavi Sharma
  • Patent number: 9831558
    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a single MMW transmitter device having a power splitter that splits a data modulated MMW signal into a first MMW data modulated signal and a second MMW data modulated signal identical to the first MMW data modulated signal, such that the first data modulated MMW signal is coupled to the first antenna coupling point for radio propagation at a first direction, and the second data modulated MMW signal is coupled to the second antenna coupling point for radio propagation at a second direction.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 28, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170338563
    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.
    Type: Application
    Filed: May 18, 2016
    Publication date: November 23, 2017
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170338564
    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a single MMW transmitter device having a power splitter that splits a data modulated MMW signal into a first MMW data modulated signal and a second MMW data modulated signal identical to the first MMW data modulated signal, such that the first data modulated MMW signal is coupled to the first antenna coupling point for radio propagation at a first direction, and the second data modulated MMW signal is coupled to the second antenna coupling point for radio propagation at a second direction.
    Type: Application
    Filed: March 22, 2017
    Publication date: November 23, 2017
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170339167
    Abstract: A software signature transceiver includes a signature receiver configured to couple to a programmable electronic device and sense a signature signal generated by the programmable electronic device, wherein the signature signal varies according to computer program codes executed by the programmable electronic device, and a signature transmitter operably connected to the signature receiver, the signature transmitter configured to transmit a signature transmission signal corresponding to the signature signal. A corresponding method to use the software signature transceiver and a software monitoring device to determine whether unknown software is executing on a programmable electronic device is also disclosed herein. A corresponding system comprising the programmable electronic device, the software signature transceiver, and a software monitoring device is also disclosed herein.
    Type: Application
    Filed: May 20, 2016
    Publication date: November 23, 2017
    Inventors: Keith A. Jenkins, Raphael P. Robertazzi, Alberto Valdes Garcia
  • Publication number: 20170331430
    Abstract: An oscillator includes a first output node and a second output node. There is a tank circuit coupled between the first output node and the second output node. There is a first transistor having a first node, a second node coupled to a current source, and a control node coupled to the second output node. There is a second transistor having a first node, a second node coupled to the current source, and a control node coupled to the first output node. There is a first inductor coupled in series between the first node of the first transistor and the first output node. There is a second inductor coupled in series between the first node of the second transistor and the second output node.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 16, 2017
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tejasvi Anand, Mark A. Ferriss, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170323186
    Abstract: A system for labeling an object uses at least one object label made from a material that absorbs and reflects incident energy uniformly across all wavelengths of incident energy at a ratio proportional to a thickness of the material and that includes a pattern having variations in the thickness of the material along at least one of two orthogonal directions across the label. An interrogator directs a predetermined wavelength of radiation to the at least one label, and a reader to receives reflected radiation from the label at the predetermined wavelength and interprets the reflected radiation to recognize the pattern.
    Type: Application
    Filed: May 4, 2016
    Publication date: November 9, 2017
    Inventors: Alberto VALDES GARCIA, Dirk PFEIFFER, Fengnian XIA
  • Publication number: 20170324486
    Abstract: An array of antenna elements are located in relation with a plurality of pre-characterized reference detectors. At baseband frequencies, a transmit radiation pattern of the array of antenna elements is sensed with the plurality of pre-characterized reference detectors, at a plurality of phase and gain settings, to detect mismatch among two or more elements of the array of antenna elements. Phase and gain settings for the array of antenna elements are updated to correct the mismatch.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 9, 2017
    Inventors: Alberto Valdes Garcia, Bodhisatwa Sadhu, Yahya Mesgarpour Tousi
  • Patent number: 9813264
    Abstract: Tunable phase shifters and methods for using the same include a signal line; one or more grounding lines; one or more crossing lines below the signal line in proximity to the signal line and substantially perpendicular to a longitudinal direction of the signal line, where the crossing lines conform to the shape of the signal line along at least three surfaces of the signal line and where the crossing lines have a tunable capacitance; and an inductance return line below the crossing lines substantially parallel to the longitudinal direction of the signal line, where the inductance return line provides a tunable inductance.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: November 7, 2017
    Assignee: International Business Machines Corporation
    Inventors: Hanyi Ding, Alberto Valdes Garcia, Wayne H. Woods, Jr.
  • Patent number: 9800434
    Abstract: Tunable phase shifters and methods for using the same include a signal line; one or more grounding lines; one or more crossing lines below the signal line in proximity to the signal line and substantially perpendicular to a longitudinal direction of the signal line, where the crossing lines conform to the shape of the signal line along at least three surfaces of the signal line and where the crossing lines have a tunable capacitance; and an inductance return line below the crossing lines substantially parallel to the longitudinal direction of the signal line, where the inductance return line provides a tunable inductance.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 24, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hanyi Ding, Alberto Valdes Garcia, Wayne H. Woods, Jr.
  • Patent number: 9772448
    Abstract: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. A plasmonic conductive layer is formed over the gap to excite plasmons to provide signal transmission between the first and second plasmonic couplers.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 26, 2017
    Assignee: International Business Machines Corporation
    Inventors: Phaedon Avouris, Vasili Perebeinos, Mathias B. Steiner, Alberto Valdes Garcia
  • Patent number: 9735732
    Abstract: An apparatus includes an oscillation ring comprising N oscillators, where N is an even integer that is greater than 3, the N oscillators connected in series in a loop by N connection nodes, each oscillator of the N oscillators comprising a pair of cross-coupled inverting amplifiers. The apparatus also includes N inductors arranged in a star configuration such that each inductor of the N inductors connects to a corresponding connection node of the oscillation ring and a common connection node of the star configuration. The apparatus may also include N capacitor banks. Each of the N capacitor banks may include a plurality of activation switches for loading a corresponding oscillator with capacitance. A method includes providing the above apparatus and activating selected activation switches to adjust an oscillation frequency for the oscillation ring toward a desired value.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: August 15, 2017
    Assignee: International Business Machines Corporation
    Inventors: Mark A. Ferriss, Daniel J. Friedman, Wooram Lee, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170214145
    Abstract: A parabolic cylindrical reflector antenna that comprises two or more antenna feeds each directed towards a parabolic cylindrical reflector, wherein the antenna feeds are positioned in one or more line-arrays parallel to a focal line of the parabolic cylindrical reflector, and the line-array is substantially centered opposing the reflector. The antenna comprises a controller configured to scan along a straight edge of the reflector by electronically adjusting a phase of each of the antenna feeds, thereby changing the incident angle of an energy beam relative to the reflector. The controller is configured to scan along a curved edge of the reflector by moving, using a mechanical positioning mechanism, the antenna feeds in a direction parallel to a directrix of the reflector while maintaining the positioning or by electronically selecting one of two or more parallel line-arrays.
    Type: Application
    Filed: January 25, 2016
    Publication date: July 27, 2017
    Applicant: International Business Machines Corporation
    Inventors: Danny Elad, Daniel Friedman, Noam Kaminski, Ofer Markish, Alberto Valdes Garcia