Patents by Inventor Vishnu UNNIKRISHNAN

Vishnu UNNIKRISHNAN 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: 11929815
    Abstract: A system (1) for beamforming of incoming radio-frequency signals is provided. The system includes at least one digital signal processor, DSP, a plurality of analogue-to-digital converters, ADC, each connected to the at least one DSP. Further, the system comprises a plurality of sample-and-hold, S&H, circuit groups, each comprising a plurality of sample-and-hold circuits additively connected to a respective ADC and a plurality of receiving antenna connections each connected to a respective S&H circuit in each group at one end and each antenna connection connected to a respective antenna. The system is configured to selectively alternate between a plurality of beamforming functionalities, wherein the receiver system is arranged to time-interleave the ADCs and control specific S&H circuits in each S&H group by at least one of time-interleave or disable specific S&H circuits depending on a set beamforming functionality. An associated method (100) is also provided.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: March 12, 2024
    Assignee: SAAB AB
    Inventors: Kalle Spoof, Marko Kosunen, Jussi Ryynanen, Miikka Tenhunen, Vishnu Unnikrishnan, Kari Stadius
  • Publication number: 20230396310
    Abstract: The proposed disclosure relates to a method (100) and system (1) arranged to provide beamforming of incoming radio-frequency signals, the receiver system (1) comprising at least one digital signal processor, DSP (2), a plurality of analogue-to-digital converters, ADC (3), each connected to the at least one DSP (2). Further the system comprises a plurality of sample-and-hold, S&H, circuit groups (4), each comprising a plurality of sample-and-hold circuits (5) additively connected to a respective ADC (3) and a plurality of receiving antenna connections (6) each connected to a respective S&H circuit (5) in each group (4) at one end and each antenna connection (6) connected to a respective antenna (7).
    Type: Application
    Filed: November 19, 2021
    Publication date: December 7, 2023
    Inventors: Kalle SPOOF, Marko KOSUNEN, Jussi RYYNANEN, Miikka TENHUNEN, Vishnu UNNIKRISHNAN, Kari STADIUS