Patents by Inventor V. Thyagarajan

V. Thyagarajan 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).

  • Patent number: 10727923
    Abstract: An apparatus has an array of antennae. Each antenna in the array has a tile circuit including a frequency conversion circuit to generate from an incoming reference signal a local oscillator carrier signal operative as an outgoing reference signal for an adjacent tile circuit. A mixer receives the local oscillator carrier signal and combines it with an antenna signal to produce a frequency converted antenna signal. A matrix of phase shifters and variable gain elements produces a set of frequency converted and phase rotated antenna signals. Analog summers combine the frequency converted and phase rotated antenna signals with user input signals from the adjacent tile circuit for distributed analog beam forming of multiple streams. The user input signals correspond to distinct users tracked by the array of antennae.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 28, 2020
    Assignee: Rf Pixels, Inc.
    Inventors: Siva V. Thyagarajan, Ali Niknejad, Sriramkumar Venugopalan
  • Patent number: 10153731
    Abstract: An apparatus, comprising has an array of power amplifiers. A power detector collects a power signal applied to the array of power amplifiers. Digital logic is connected to the array of power amplifiers and the power detector. The digital logic is configured to evaluate the power signal and select an array pattern from a set of array patterns and generate a control signal to implement the array pattern on the array of power amplifiers. Each array pattern in the set of array patterns includes at least one operative power amplifier.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: December 11, 2018
    Assignee: RF Pixels, Inc.
    Inventors: Siva V. Thyagarajan, Ali M. Niknejad, Sriramkumar Venugopalan
  • Publication number: 20180115360
    Abstract: An apparatus has an array of antennae. Each antenna in the array has a tile circuit including a frequency conversion circuit to generate from an incoming reference signal a local oscillator carrier signal operative as an outgoing reference signal for an adjacent tile circuit. A mixer receives the local oscillator carrier signal and combines it with an antenna signal to produce a frequency converted antenna signal. A matrix of phase shifters and variable gain elements produces a set of frequency converted and phase rotated antenna signals. Analog summers combine the frequency converted and phase rotated antenna signals with user input signals from the adjacent tile circuit for distributed analog beam forming of multiple streams. The user input signals correspond to distinct users tracked by the array of antennae.
    Type: Application
    Filed: October 23, 2017
    Publication date: April 26, 2018
    Applicant: RF Pixels, Inc.
    Inventors: Ali M. Niknejad, Siva V. Thyagarajan, Sriramkumar Venugopalan
  • Publication number: 20180115282
    Abstract: An apparatus, comprising has an array of power amplifiers. A power detector collects a power signal applied to the array of power amplifiers. Digital logic is connected to the array of power amplifiers and the power detector. The digital logic is configured to evaluate the power signal and select an array pattern from a set of array patterns and generate a control signal to implement the array pattern on the array of power amplifiers. Each array pattern in the set of array patterns includes at least one operative power amplifier.
    Type: Application
    Filed: October 23, 2017
    Publication date: April 26, 2018
    Applicant: RF Pixels, Inc.
    Inventors: Siva V. Thyagarajan, Ali M. Niknejad, Sriramkumar Venugopalan
  • Publication number: 20030093395
    Abstract: A system and a method for an automated intelligent information mining includes receiving product-related queries and respective product-related information from various text sources; extracting multiple key-phrases from the product-related information and received queries; generating two or more layers of contextual relation maps by mapping the extracted key-phrases to two-dimensional maps using a self organizing map, and a technique including a combination of Hessian matrix and Perturbation technique to enhance the learning process and to categorize the extracted key-phrases based on a contextual meaning. Further, the technique includes forming word clusters and constructing corresponding key phrase frequency histograms for each of the generated contextual relation maps.
    Type: Application
    Filed: May 10, 2001
    Publication date: May 15, 2003
    Applicant: Honeywell International Inc.
    Inventors: Ravindra K. Shetty, V. Thyagarajan
  • Publication number: 20030028448
    Abstract: An automated customer support tool. A web server receives one or more queries regarding the product from a customer. A categorizer coupled to the web server categorizes the received queries based on a type of query, to determine whether the answers to the queries can be automatically communicated to the customer. An FAQ extractor extracts one or more corresponding product FAQs from respective product FAQ data bases. A key-word extractor extracts one or more key-words from the received queries and the extracted product FAQs. The key-word extractor further transforms the extracted key words to unique numerical representations. An analyzer coupled to the key-word extractor represents the transformed key-words into respective query and product FAQ vector forms. The analyzer further applies a convolution algorithm to each of the query vector forms, with each of the product FAQ vector forms separately and obtains one or more appropriate answers to the queries.
    Type: Application
    Filed: May 10, 2001
    Publication date: February 6, 2003
    Applicant: Honeywell International Inc.
    Inventors: Sindhu Joseph, Ravindra K. Shetty, V. Thyagarajan