Patents by Inventor Eung G. Paek

Eung G. Paek 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).

  • True time delay generating system and method
    Patent number: 6393177
    Abstract: System and method for rapidly reconfigurable two-dimensional true time delay generation for phased array antennas is described. The system utilizes a broadband light source, an array of fiber chirp gratings in a single fiber, and an acousto-optic spectrometer to generate a time-delayed linear grating. The grating is subsequently rotated to the desired angle utilizing an acousto-optic device having no moving parts.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: May 21, 2002
    Assignee: United States of America
    Inventor: Eung G. Paek
  • True time delay generating system and method
    Publication number: 20020012500
    Abstract: System and method for rapidly reconfigurable two-dimensional true time delay generation for phased array antennas is described. The system utilizes a broadband light source, an array of fiber chirp gratings in a single fiber, and an acousto-optic spectrometer to generate a time-delayed linear grating. The grating is subsequently rotated to the desired angle utilizing an acousto-optic device having no moving parts.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 31, 2002
    Inventor: Eung G. Paek
  • True time delay generation utilizing broadband light source with fiber chirp grating array and acousto-optic beam steering and 2-D architectures
    Patent number: 6295395
    Abstract: System and method for rapidly reconfigurable two-dimensional true time delay generation for phased array antennas is described. The system utilizes a broadband light source, an array of fiber chirp gratings in a single fiber, and an acousto-optic spectrometer to generate a time-delayed linear grating. The grating is subsequently rotated to the desired angle utilizing an acousto-optic device having no moving parts.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: September 25, 2001
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Eung G. Paek
  • Holographic code division multiple access
    Patent number: 5438440
    Abstract: A technique for all-optical Code Division Multiple Access (CDMA) system based on optical holography is disclosed. In this technique the energy of an incoming information light signal is spread over a spatial domain by a two-dimensional spatial encoder which includes a mask having regions of first and second transmission characteristics corresponding to the unique code assigned to a particular source. Subsequent decoding, which is accomplished by an optical matched filter through the use of a hologram, spatially despreads the energy of the information light signal and produces a focused light beam which serves as input to a code division detector.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: August 1, 1995
    Assignee: Bell Communications Research, Inc.
    Inventors: Eung G. Paek, Jawad A. Salehi
  • Holographic code division multiple access
    Patent number: 5289299
    Abstract: A technique for all-optical Code Division Multiple Access (CDMA) system based on optical holography is disclosed. In this technique the energy of an incoming information light signal is spread over a spatial domain by a two-dimensional spatial encoder which includes a mask having regions of first and second transmission characteristics corresponding to the unique code assigned to a particular source. Subsequent decoding, which is accomplished by an optical matched filter through the use of a hologram, spatially despreads the energy of the information light signal and produces a focused light beam which serves as input to a code division detector.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: February 22, 1994
    Assignee: Bell Communications Research, Inc.
    Inventors: Eung G. Paek, Jawad A. Salehi
  • Holographic code division multiple access
    Patent number: 5216529
    Abstract: A technique for all-optical Code Division Multiple Access (CDMA) system based on optical holography is disclosed. In this technique the energy of an incoming information light signal is spread over a spatial domain by a two-dimensional spatial encoder which includes a mask having regions of first and second transmission characteristics corresponding to the unique code assigned to a particular source. Subsequent decoding, which is accomplished by an optical matched filter through the use of a hologram, spatially despreads the energy of the information light signal and produces a focused light beam which serves as input to a code division detector.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: June 1, 1993
    Assignee: Bell Communications Research, Inc.
    Inventors: Eung G. Paek, Jawad A. Salehi