Patents by Inventor Stanley P. Kaveckis

Stanley P. Kaveckis 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).

  • High speed step generator output circuit
    Patent number: 4924110
    Abstract: A step generator for producing steps having constant edge parameters while driving varying loads includes a pair of DC coupled low speed diode switches for slowly switching the output load current. A pair of capacitors provide an AC coupled high speed input for rapidly, but temporarily, switching the output load current until the sustaining action of the low speed diode switch has occurred. A pair of resistor divider circuits in each of the low speed diode switches maintains a relatively constant reverse bias voltage across the diodes coupled to the capacitors. The high speed switching threshold is maintained at a relatively constant level which produces an output voltage step with constant edge parameters and no overshoot.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: May 8, 1990
    Assignee: Tektronix, Inc.
    Inventors: John B. Rettig, Jonathan Lueker, John E. Carlson, Stanley P. Kaveckis, Roy W. Lewallen
  • Dual channel time domain reflectometer
    Patent number: 4755742
    Abstract: A dual channel time domain reflectometer includes a pair of input lines connected at respective nodes to a reference flat current pulse generator and a traveling wave sampling gate, respectively. The sampling gates are actuated by a balanced strobe generator which includes a waveguide coupler for coupling a high amplitude fast rise time pulse to each of the gates simultaneously. Pulses of requisite amplitude and shape are generated by a circuit responsive to a strobe trigger input which drives a step recovery diode.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: July 5, 1988
    Assignee: Tektronix, Inc.
    Inventors: Agoston Agoston, John B. Rettig, Stanley P. Kaveckis, John E. Carlson, Andrew E. Finkbeiner
  • Comb generators
    Patent number: 4727340
    Abstract: A circuit for generating a succession of fast rising voltage pulses comprises an inductor connected between first and second circuit nodes, a step recovery diode connected between a reference potential level and the first circuit node, and a current switch having a first state in which it conducts current in one direction with respect to the second circuit node and a second state in which it conducts current in the opposite direction with respect to the second circuit node. An oscillator is connected to the current switch for alternately and repeatedly placing the current switch in its first state and its second state. Preferably, the oscillator comprises a SAW resonator having a high Q and a parallel LC tank circuit having a low Q, connected in a closed positive feedback loop.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: February 23, 1988
    Assignee: Tektronix, Inc.
    Inventors: Agoston Agoston, Stanley P. Kaveckis