Patents by Inventor Chung-Kyun Ham

Chung-Kyun Ham 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).

  • Base station antenna system and method for estimating mobile station direction in wireless communication system
    Patent number: 7515892
    Abstract: Disclosed is an operation method of a base station antenna system, which includes receiving signals from at least two antennas to which a mono-pulse scheme has been applied; operating sum channel weight vectors for increasing a gain of signals incident to a specific direction and difference channel weight vectors for causing a gain of signals incident to a specific direction to be zero; applying the sum channel weight vectors and the difference channel weight vectors to the received signals, and outputting predetermined signals; and obtaining beam patterns of a sum channel and a difference channel, to which the weight vectors have been applied, by means of a direction of interest, calculating a mono-pulse ratio by means of the beam patterns, and estimating the direction of a mobile station by means of the mono-pulse ratio, and output of the sum channel and output of the difference channel to which the weight vectors have been applied.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: April 7, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Hoon Moon, Jae-Young Jang, Chung-Kyun Ham
  • Base station antenna system and method for estimating mobile station direction in wireless communication system
    Publication number: 20060148525
    Abstract: Disclosed is an operation method of a base station antenna system, which includes receiving signals from at least two antennas to which a mono-pulse scheme has been applied; operating sum channel weight vectors for increasing a gain of signals incident to a specific direction and difference channel weight vectors for causing a gain of signals incident to a specific direction to be zero; applying the sum channel weight vectors and the difference channel weight vectors to the received signals, and outputting predetermined signals; and obtaining beam patterns of a sum channel and a difference channel, to which the weight vectors have been applied, by means of a direction of interest, calculating a mono-pulse ratio by means of the beam patterns, and estimating the direction of a mobile station by means of the mono-pulse ratio, and output of the sum channel and output of the difference channel to which the weight vectors have been applied.
    Type: Application
    Filed: December 28, 2005
    Publication date: July 6, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hoon Moon, Jae-Young Jang, Chung-Kyun Ham