Patents by Inventor Scott R. Jansen
Scott R. Jansen 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).
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Patent number: 8723530Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: GrantFiled: April 1, 2013Date of Patent: May 13, 2014Assignee: Tektronix, Inc.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Patent number: 8564308Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a shunt pole-zero pair coupled to the input circuitry providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: GrantFiled: July 29, 2010Date of Patent: October 22, 2013Assignee: Tektronix, Inc.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Patent number: 8436624Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: GrantFiled: July 29, 2010Date of Patent: May 7, 2013Assignee: Tektronix, Inc.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Patent number: 8278940Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: GrantFiled: July 29, 2010Date of Patent: October 2, 2012Assignee: Tektronix, Inc.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns
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Publication number: 20110074390Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: ApplicationFiled: July 29, 2010Publication date: March 31, 2011Applicant: TEKTRONIX, INC.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Publication number: 20110074392Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a shunt pole-zero pair coupled to the input circuitry providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: ApplicationFiled: July 29, 2010Publication date: March 31, 2011Applicant: TEKTRONIX, INC.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Publication number: 20110074441Abstract: A low capacitance signal acquisition system has a signal acquisition probe having a low capacitance input circuit coupled to a compensation amplifier in a signal processing instrument via a signal cable. The low capacitance input circuit, the signal cable and the signal processing instrument input have mismatched time constants with the compensation amplifier having feedback loop circuitry providing adjustable gain and pole-zero pairs for maintaining flatness over the low capacitance signal acquisition system frequency bandwidth.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Applicant: TEKTRONIX, INC.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Publication number: 20110074391Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.Type: ApplicationFiled: July 29, 2010Publication date: March 31, 2011Applicant: TEKTRONIX, INC.Inventors: Josiah A. Bartlett, Ira G. Pollock, Daniel G. Knierim, Lester L. Larson, Scott R. Jansen, Kenneth P. Dobyns, Michael Duane Stevens
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Patent number: 4818056Abstract: An optical connector in accordance with the invention includes a body to which an optical fiber supporting ferrule is mounted. A photo diode is rigidly mounted to the connector such that the photo active portion of the photo diode is optically coupled to the optical fiber. An interface is provided between the photo diode and an electronic circuit. In one form of the invention, the electronic circuit is mounted to the optical connector to facilitate this interface. Alternately, the circuit may be remote from the connector. In this case, the connector includes at least one electrically conductive wire lead for connecting the photo diode to the electronic circuit. An apertured substrate may be used to mount the photo diode to the ferrule with the photo diode optically coupled to the optical fiber through the aperture. The structure may be capped for protection against the environment, or alternatively, the circuit board itself may provide protection to the opto-electronic interface.Type: GrantFiled: March 2, 1987Date of Patent: April 4, 1989Assignee: Tektronix, Inc.Inventors: R. Scott Enochs, Scott R. Jansen, Daniel R. Murphy, Randy S. Randall, Joanne Roth