Patents by Inventor Jinseong Jeong

Jinseong Jeong 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).

  • Supply-modulated RF power amplifier and RF amplification methods
    Patent number: 8159295
    Abstract: An embodiment of the invention is a method of generating a reduced bandwidth envelope signal VDD(t) for the power supply modulator of an RF amplifier. An envelope signal of an RF amplifier input Venv(t) is low pass filtered. The filtered envelope signal is subtracted from the envelope signal to obtain a difference signal, which is rectified to produce a residue signal. The residue signal is low pass filtered and added back into the filtered envelope signal. An iterative process of the rectifying, low pass filtering the residue signal adding it back is continued until a condition of VDD(t)?Venv(t) is met. Another embodiment provides a method of generating a reduced bandwidth envelope signal VDD(t) for the power supply modulator of an RF amplifier. An envelope signal of an RF amplifier input Venv(t) is low pass filtered. The filtered envelope signal is subtracted from the envelope signal to obtain a difference signal, which is rectified to produce a residue signal.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 17, 2012
    Assignee: The Regents of the University of California
    Inventors: Peter M. Asbeck, Donald Kimball, Jinseong Jeong
  • SUPPLY-MODULATED RF POWER AMPLIFIER AND RF AMPLIFICATION METHODS
    Publication number: 20100295613
    Abstract: An embodiment of the invention is a method of generating a reduced bandwidth envelope signal VDD(t) for the power supply modulator of an RF amplifier. An envelope signal of an RF amplifier input Venv(t) is low pass filtered. The filtered envelope signal is subtracted from the envelope signal to obtain a difference signal, which is rectified to produce a residue signal. The residue signal is low pass filtered and added back into the filtered envelope signal. An iterative process of the rectifying, low pass filtering the residue signal adding it back is continued until a condition of VDD(t)?Venv(t) is met. Another embodiment provides a method of generating a reduced bandwidth envelope signal VDD(t) for the power supply modulator of an RF amplifier. An envelope signal of an RF amplifier input Venv(t) is low pass filtered. The filtered envelope signal is subtracted from the envelope signal to obtain a difference signal, which is rectified to produce a residue signal.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Peter M. Asbeck, Donald Kimball, Jinseong Jeong