Patents by Inventor Ivan William Selesnick

Ivan William Selesnick 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).

  • Prescribed modulus chirp-like waveforms with multiple frequency notches
    Patent number: 8830120
    Abstract: An iterative method for modifying an initial time signal to form a created signal having a prescribed envelope, and frequency notches at prescribed frequency values, wherein the created signal closely resembles the initial time signal, the envelope of the created time signal is the prescribed envelope, and the Fourier magnitude of the created time signal at the prescribed frequency values is nearly zero. The created time signal may be a real-valued signal as well as a complex-valued time signal which closely resembles an arbitrary initial time signal, including initial time signals which are standard transmit signals for radar systems, and which have Fourier transform magnitudes with notches and stop-bands at prescribed frequency values. These notches and stop bands are created by enforcing nulls of prescribed order at the prescribed frequency values within the modified time signal.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: September 9, 2014
    Assignee: C&P Technologies, Inc.
    Inventors: Ivan William Selesnick, Unnikrishna Sreedharan Pillai
  • PRESCRIBED MODULUS CHIRP-LIKE WAVEFORMS WITH MULTIPLE FREQUENCY NOTCHES
    Publication number: 20130135141
    Abstract: An iterative method for modifying an initial time signal to form a created signal having a prescribed envelope, and frequency notches at prescribed frequency values, wherein the created signal closely resembles the initial time signal, the envelope of the created time signal is the prescribed envelope, and the Fourier magnitude of the created time signal at the prescribed frequency values is nearly zero. The created time signal may be a real-valued signal as well as a complex-valued time signal which closely resembles an arbitrary initial time signal, including initial time signals which are standard transmit signals for radar systems, and which have Fourier transform magnitudes with notches and stop-bands at prescribed frequency values. These notches and stop bands are created by enforcing nulls of prescribed order at the prescribed frequency values within the modified time signal.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventors: Ivan William Selesnick, Unnikrishn Sreedharan Pillai