Patents by Inventor Abhishek Bhat

Abhishek Bhat 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: 20220345102
    Abstract: A multi-port coupled inductor with interference suppression is provided with a first signal port connected to a first resistor port via a first inductor; a second resistor port connected to the first resistor port via a second inductor; a second signal port connected to the second resistor port via a third inductor; a third resistor port connected to the first resistor port via a first resistor; a fourth resistor port connected to the third resistor port via a fourth inductor and to the second resistor port via a second resistor; a third signal port connected to the third resistor port via a fifth inductor; and a fourth signal port connected to the fourth resistor port via a sixth inductor.
    Type: Application
    Filed: April 21, 2021
    Publication date: October 27, 2022
    Inventors: Abhishek BHAT, Romesh Kumar NANDWANA, Kadaba LAKSHMIKUMAR
  • Patent number: 11398827
    Abstract: A clock generator includes a first phase-locked loop (PLL), a converter circuit, and a second PLL. The first PLL generates an oscillating signal based on a reference signal and outputs a noise signal indicating a noise component of the oscillating signal. The converter circuit produces an electrical signal based on the noise signal. The second PLL receives the electrical signal from the converter circuit at a loop filter of the second PLL and generates a clock signal based on the oscillating signal and the electrical signal.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: July 26, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Abhishek Bhat, Romesh Kumar Nandwana
  • Patent number: 11356107
    Abstract: An accurate replica oscillator-based frequency tracking loop (FTL) is provided. The replica oscillator used in the FTL can be at a lower frequency and therefore can consume much lower power compared to a main oscillator, such as an injection locked oscillator (ILO). The proposed FTL accurately sets the free running frequency of an ILO across process, voltage and temperature (PVT). Techniques are also provided to compensate the gain and offset error between the replica oscillator and the ILO.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: June 7, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Abhishek Bhat, Romesh Kumar Nandwana, Kadaba Lakshmikumar, Pavan Kumar Hanumolu
  • Publication number: 20220044904
    Abstract: Traveling-wave tube amplifiers for high-frequency signals, including terahertz signals, and methods for making a slow-wave structure for the traveling-wave tube amplifiers are provided. The slow-wave structures include helical conductors that are self-assembled via the release and relaxation of strained films from a sacrificial growth substrate.
    Type: Application
    Filed: October 21, 2021
    Publication date: February 10, 2022
    Inventors: Max G. Lagally, Matthew McLean Dwyer, Francesca Cavallo, Daniel Warren van der Weide, Abhishek Bhat
  • Patent number: 11218113
    Abstract: A voltage controlled oscillator (VCO) is described. The VCO includes a plurality of nodes coupled with a plurality of transistors, and a first inductor-capacitor (LC) tank coupled with a second LC tank. The first LC tank and the second LC tank include a shared inductor structure coupled to the plurality of nodes. The first LC tank and the second LC tank each include a capacitor. The capacitors are each coupled on a first side to a node of the plurality of nodes and on a second side to a respective capacitor in the other LC tank. The first LC tank and the second LC tank are configured to resonate at a fundamental frequency for differential-mode signals, and the first LC tank and the second LC tank are configured to resonate at twice the fundamental frequency for common-mode signals.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 4, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Abhishek Bhat, Romesh Kumar Nandwana, Kadaba Lakshmikumar
  • Patent number: 11201028
    Abstract: Traveling-wave tube amplifiers for high-frequency signals, including terahertz signals, and methods for making a slow-wave structure for the traveling-wave tube amplifiers are provided. The slow-wave structures include helical conductors that are self-assembled via the release and relaxation of strained films from a sacrificial growth substrate.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: December 14, 2021
    Assignees: Wisconsin Alumni Research Foundation, The Regents of the University of New Mexico
    Inventors: Max G. Lagally, Matthew McLean Dwyer, Francesca Cavallo, Daniel Warren van der Weide, Abhishek Bhat
  • Publication number: 20210367573
    Abstract: Traveling-wave tube amplifiers and methods for making slow-wave structures for the amplifiers are provided. The SWSs include helical conductors that are self-assembled via the release of stressed electrically conductive strips from a sacrificial material. The helical conductors can be electroplated post-self-assembly to fortify the helix, reduce losses, and tailor the dimensions and operating parameters of the helix.
    Type: Application
    Filed: May 25, 2020
    Publication date: November 25, 2021
    Inventors: Max G. Lagally, Matthew McLean Dwyer, Daniel Warren van der Weide, Abhishek Bhat, Francesca Cavallo, Divya Jyoti Prakash
  • Publication number: 20210367138
    Abstract: Piezoelectrically actuated devices constructed from thin semiconductor membranes bonded directly to piezoelectric substrates are provided. Methods for fabricating these devices are also provided. The bonding of the semiconductor to the piezoelectric material does not require the use of any intermediate layers, such as bonding agents.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 25, 2021
    Inventors: Max G. Lagally, Abhishek Bhat, Frank Steele Flack, Shelley Ann Scott, Robert H. Blick
  • Publication number: 20210124415
    Abstract: Presented are eye-controlled user-machine interaction systems and methods that, based on input variables that comprise orientation and motion of an electronic contact lens, assist the wearer of the contact lens carrying a femtoprojector to control and navigate a virtual scene that may be superimposed onto the real-world environment. Various embodiments provide for smooth, intuitive, and naturally flowing eye-controlled, interactive operations between the wearer and a virtual environment. In certain embodiments, eye motion information is used to wake a smart electronic contact lens, activate tools in a virtual scene, or any combination thereof without the need for blinking, winking, hand gestures, and use of buttons.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 29, 2021
    Applicant: Tectus Corporation
    Inventors: Dominic Philip HAINE, Scott HERZ, Renaldi WINOTO, Abhishek BHAT, Ramin MIRJALILI, Joseph CZOMPO
  • Publication number: 20210099142
    Abstract: Traveling-wave tube amplifiers for high-frequency signals, including terahertz signals, and methods for making a slow-wave structure for the traveling-wave tube amplifiers are provided. The slow-wave structures include helical conductors that are self-assembled via the release and relaxation of strained films from a sacrificial growth substrate.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 1, 2021
    Inventors: Max G. Lagally, Matthew McLean Dwyer, Francesca Cavallo, Daniel Warren van der Weide, Abhishek Bhat
  • Publication number: 20210072220
    Abstract: A method to determine the throughput speed v of a pore, comprising the steps of feeding, by means of a driving force F, a filiform calibration element through the pore, the calibration element having a plurality of markers spaced apart by known distances and configured to produce an interaction event that transmits a signal away from the pore upon interaction with the pore, detecting a plurality of interaction events, and determining a time interval ?t between successive interaction events, and/or a frequency ? of interaction events.
    Type: Application
    Filed: July 16, 2018
    Publication date: March 11, 2021
    Applicants: Wisconsin Alumni Research Foundation, Universität Hamburg
    Inventors: Robert BLICK, Paul GWOZDZ, Abhishek BHAT
  • Patent number: 10901505
    Abstract: Presented are eye-controlled user-machine interaction systems and methods that, based on input variables that comprise orientation and motion of an electronic contact lens, assist the wearer of the contact lens carrying a femtoprojector to control and navigate a virtual scene that may be superimposed onto the real-world environment. Various embodiments provide for smooth, intuitive, and naturally flowing eye-controlled, interactive operations between the wearer and a virtual environment. In certain embodiments, eye motion information is used to wake a smart electronic contact lens, activate tools in a virtual scene, or any combination thereof without the need for blinking, winking, hand gestures, and use of buttons.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: January 26, 2021
    Assignee: Tectus Corporation
    Inventors: Dominic Philip Haine, Scott Herz, Renaldi Winoto, Abhishek Bhat, Ramin Mirjalili, Joseph Czompo
  • Patent number: 10715939
    Abstract: A transducer supported by the eardrum provides a piezoelectric material exchanging energy with the eardrum through a nanoscale membrane, the latter serving to boost the coupling between the piezoelectric material and the eardrum.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 14, 2020
    Assignees: Wisconsin Alumni Research Foundation, University of Hamburg
    Inventors: Max Lagally, Abhishek Bhat, Frank Flack, Shelley Scott, Robert H. Blick
  • Patent number: 10605800
    Abstract: A molecule sequencer uses a planar nanochannel for aligning molecules to flow past impedance interrogation electrodes mounted across the channel for rapid sequencing. The electrodes may be fixed to the channel walls to provide improved registration by co-fabrication with the channel. Extended channel length over normally used nanopores can provide improved control of longer molecules and allow parallel sequencers to be readily fabricated on a single substrate.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: March 31, 2020
    Assignees: Wisconsin Alumni Research Foundation, University of Hamburg
    Inventors: Robert H. Blick, Abhishek Bhat, Paul Gwozdz
  • Publication number: 20200092666
    Abstract: A transducer supported by the eardrum provides a piezoelectric material exchanging energy with the eardrum through a nanoscale membrane, the latter serving to boost the coupling between the piezoelectric material and the eardrum
    Type: Application
    Filed: September 13, 2018
    Publication date: March 19, 2020
    Inventors: Max Lagally, Abhishek Bhat, Frank Flack, Shelley Scott, Robert H. Blick
  • Publication number: 20190293623
    Abstract: A molecule sequencer uses a planar nanochannel for aligning molecules to flow past impedance interrogation electrodes mounted across the channel for rapid sequencing. The electrodes may be fixed to the channel walls to provide improved registration by co-fabrication with the channel. Extended channel length over normally used nanopores can provide improved control of longer molecules and allow parallel sequencers to be readily fabricated on a single substrate.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 26, 2019
    Inventors: Robert H. Blick, Abhishek Bhat, Paul Gwozdz
  • Patent number: 10330631
    Abstract: A nanoscale-sized pore positioned between two reservoirs may sequence biomolecules by detecting changes in the emitted light due to a change in charge of portions of the biomolecules as they pass through the pore such as affect an emission frequency of a quantum structure proximate to the pore opening. The nanopores may be fabricated using local droplet etching whose randomness is accommodated by lowering the droplet density to permit isolation of nanopores in tiles that may be adhered to an underlying supporting substrate having an aligned opening. The nanopore-tiles may be integrated with commonly applied glass chips and may be employed in microfluidic circuitry.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: June 25, 2019
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert H. Blick, Paul H. Gwozdz, Abhishek Bhat, Wolfgang Hansen, Christian Heyn
  • Publication number: 20190013200
    Abstract: High-quality, single-crystalline silicon-germanium (Si(1-x)Gex) having a high germanium content is provided. Layers of the high-quality, single-crystalline silicon-germanium can be grown to high sub-critical thicknesses and then released from their growth substrates to provide Si(1-x)Gex films without lattice mismatch-induced misfit dislocations or a mosaic distribution of crystallographic orientations.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventors: Max G. Lagally, Thomas Francis Kuech, Yingxin Guan, Shelley A. Scott, Abhishek Bhat, Xiaorui Cui
  • Patent number: 10176991
    Abstract: High-quality, single-crystalline silicon-germanium (Si(1-x)Gex) having a high germanium content is provided. Layers of the high-quality, single-crystalline silicon-germanium can be grown to high sub-critical thicknesses and then released from their growth substrates to provide Si(1-x)Gex films without lattice mismatch-induced misfit dislocations or a mosaic distribution of crystallographic orientations.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: January 8, 2019
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Max G. Lagally, Thomas Francis Kuech, Yingxin Guan, Shelley A. Scott, Abhishek Bhat, Xiaorui Cui
  • Patent number: 10151741
    Abstract: An electrically conductive nanoscale pore may be employed as an antenna to provide precise localized measurements of the impedance-altering characteristics of a molecule such as DNA or RNA or the like passing through the pore. The use of radiofrequency measurements promises high-speed analysis of long molecules (polymers).
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: December 11, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert H. Blick, Abhishek Bhat, Paul Gwozdz