Search

Sasidhar Vajha

age ~45

from League City, TX

Sasidhar Vajha Phones & Addresses

  • League City, TX
  • 1400 2Nd St, Minneapolis, MN 55454
  • Houston, TX
  • Maple Grove, MN
  • Peoria, IL

Industries

Wireless

Us Patents

  • Monolithic Integrated Transceiver

    view source
  • US Patent:
    8467739, Jun 18, 2013
  • Filed:
    Sep 10, 2008
  • Appl. No.:
    12/208198
  • Inventors:
    Sasidhar Vajha - Brooklyn Park MN,
    Timothy T. Childs - Minnetonka MN,
    Daniel C. Eller - Silver Lake MN,
  • International Classification:
    H04B 1/40
  • US Classification:
    455 75, 455 76, 455 84, 331107 R
  • Abstract:
    A variable operational mode transceiver device formed with an integrated circuit having a semiconductor material substrate supporting a feedback oscillator having a signal power divider electrically coupled to said feedback oscillator output, and a signal frequency multiplier electrically coupled to said signal power divider. A signal mixer has a pair of inputs of which one is electrically coupled to that remaining one of said pair of outputs of said signal power divider.
  • Integrated Circuit Oscillator

    view source
  • US Patent:
    2004006, Apr 1, 2004
  • Filed:
    Sep 15, 2003
  • Appl. No.:
    10/662748
  • Inventors:
    Zahilya Austin - St. Paul MN,
    Timothy Childs - Eden Prairie MN,
    Sasidhar Vajha - Minneapolis MN,
  • Assignee:
    TLC Precision Wafer Technology, Inc. - Minneapolis MN
  • International Classification:
    H03B001/00
  • US Classification:
    331/17700V
  • Abstract:
    A feedback oscillator device formed with an integrated circuit having a semiconductor material substrate on a ground plane. The circuit has an amplifier having an input and an output is provided at least in part on said semiconductor material substrate. A directional coupler is used to couple the amplifier output signal to the amplifier input through a parallel separated transmission lines transfer system and a capacitor such as a varactor. The substrate can be of gallium arsenide.
  • Implantable Medical Device Communication System

    view source
  • US Patent:
    2008002, Jan 24, 2008
  • Filed:
    May 22, 2007
  • Appl. No.:
    11/751966
  • Inventors:
    Yogendra A. Shah - Blaine MN,
    Sasidhar Vajha - Brooklyn Park MN,
  • Assignee:
    CARDIAC PACEMAKERS, INC. - St. Paul MN
  • International Classification:
    A61N 1/02
  • US Classification:
    607 60
  • Abstract:
    A medical communication system for providing remote communications with an active implantable medical device. In one embodiment, a medical communication system includes an active implantable medical device (AIMD) that is configured to transmit and receive a wireless signal from within a human body, and a non-implantable programmer that includes a retrodirective antenna. The programmer is configured to scan in multiple directions for signals received from the AIMD and to identify the direction of the signal having the highest signal power.
  • Measuring Antenna Matching Via Transmitter Current Draw

    view source
  • US Patent:
    2011016, Jul 7, 2011
  • Filed:
    Dec 23, 2010
  • Appl. No.:
    12/977166
  • Inventors:
    Philip G. Dion - Blaine MN,
    Dennis E. Larson - White Bear Lake Township MN,
    Sasidhar Vajha - Brooklyn Park MN,
  • International Classification:
    A61N 1/08
    H04B 1/40
  • US Classification:
    607 60, 455 901
  • Abstract:
    This document discusses, among other things, an implantable telemetry system including an RF transceiver configured to drive an antenna and a matching circuit, configured to be coupled to the antenna, the matching circuit including a control parameter configured to adjust the impedance of the matching circuit. The implantable telemetry system also includes a control circuit configured to receive an indication of the RF transceiver current draw and to control the control parameter of the matching circuit using the received indication of current draw. In an example, the control parameter is controlled to decrease the RF transceiver current draw.
  • Modular Antenna For Implantable Medical Device

    view source
  • US Patent:
    2012013, May 24, 2012
  • Filed:
    Nov 22, 2011
  • Appl. No.:
    13/302282
  • Inventors:
    Sasidhar Vajha - Brooklyn Park MN,
    Keith R. Maile - New Brighton MN,
    Dennis E. Larson - White Bear Township MN,
    David A. Chizek - Brooklyn Park MN,
    John M. Edgell - Plymouth MN,
  • International Classification:
    A61B 5/07
    H01P 11/00
    A61N 1/36
  • US Classification:
    600302, 607 60, 29600
  • Abstract:
    Subject matter such as a method or apparatus can include an implantable antenna assembly, comprising a dielectric shell including first and second substantially parallel outer face portions, and a third outer face portion extending between the first and second portions, a spiral conductor extending along the first, second, and third portions on a surface of the dielectric shell. The dielectric shell and spiral conductor can be configured to be mechanically attached to a dielectric compartment, such as configured to be coupled to a housing of an implantable medical device. In an example, the implantable antenna assembly is configured to be electrically coupled to an implantable telemetry circuit configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna, such as included as a portion of an implantable medical device.
  • Folded Antennas For Implantable Medical Devices

    view source
  • US Patent:
    2012013, May 24, 2012
  • Filed:
    Nov 22, 2011
  • Appl. No.:
    13/302202
  • Inventors:
    Sasidhar Vajha - Brooklyn Park MN,
    Keith R. Maile - New Brighton MN,
    Dennis E. Larson - White Bear Township MN,
    David A. Chizek - Brooklyn Park MN,
    John M. Edgell - Plymouth MN,
  • International Classification:
    A61N 1/36
  • US Classification:
    607 60
  • Abstract:
    In an example, an apparatus can include an implantable medical device comprising a housing, an implantable telemetry circuit carried within the housing, a dielectric compartment mechanically coupled to the housing, the dielectric compartment including first and second substantially parallel face portions and a third face portion extending between the first and second face portions, and an implantable telemetry antenna, located at least partially within the dielectric compartment. The implantable telemetry circuit can be electrically coupled to the implantable telemetry antenna and configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna. In an example the implantable telemetry antenna comprises a spiral conductor portion extending along the first, second, and third face portions. In an example the spiral conductor includes a cross section having a lateral width that can be greater than a sidewall height of the cross section
  • Folded Antennas For Implantable Medical Devices

    view source
  • US Patent:
    2012013, May 24, 2012
  • Filed:
    Nov 22, 2011
  • Appl. No.:
    13/302324
  • Inventors:
    Sasidhar Vajha - Brooklyn Park MN,
    Keith R. Maile - New Brighton MN,
    Dennis E. Larson - White Bear Township MN,
    David A. Chizek - Brooklyn Park MN,
    John M. Edgell - Plymouth MN,
  • International Classification:
    A61N 1/36
  • US Classification:
    607 60
  • Abstract:
    Subject matter such as a method or apparatus can include an implantable medical device comprising a housing, an implantable telemetry circuit carried within the housing, and a dielectric compartment, mechanically coupled to the housing an implantable telemetry antenna, such as located at least partially within the dielectric compartment. The implantable telemetry circuit can be electrically coupled to the implantable telemetry antenna and configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna. The implantable telemetry antenna can include a spiral conductor portion extending along a face portion of the dielectric compartment, and a loading portion configured to adjust an input impedance of the implantable telemetry antenna, to provide a specified input impedance range within a specified range of operating frequencies to be used for wireless information transfer.

Resumes

Sasidhar Vajha Photo 1

Sasidhar Vajha

view source
Location:
Greater Minneapolis-St. Paul Area
Industry:
Wireless

Get Report for Sasidhar Vajha from League City, TX, age ~45
Control profile