Patents Assigned to RF Pixels, Inc.
  • 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: 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: 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