The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2005
Filed:
Jul. 31, 2002
Young-woo Kwon, Kyungki-do, KR;
Chang-yul Cheon, Seoul, KR;
Young-Woo Kwon, Kyungki-do, KR;
Chang-Yul Cheon, Seoul, KR;
Seoul National University, Seoul, KR;
Abstract
The present invention relates to a beam steering system. The system includes an array of a plurality of antenna elements, each antenna element being electrically and mechanically controlled for steering a beam in a specific direction, and a millimeter wave subsystem quasi-optically integrated with a 3-dimensional beam steering device and an MMIC-type active circuit. The antenna element is controlled in real time by an electrical driving method so as to be moved in 2-dimensional space. That is, in the 3-dimensional system of the present invention, the beam is electrically controlled by a phase shifter, and each antenna element is physically moved by a mechanical driving mechanism. The 3-dimensional beam steering antenna and the associated devices are monolithically integrated on a substrate using MEMS technology, and the active circuit elements such as a mixer, a power amplifier (PA), a low noise amplifier (LNA), a VCO, etc. are integrated in an MMIC active array. The 3-dimensional beam steering device and the active MMIC circuit are integrated into one system by being interconnected using the quasi-optical technique. According to the present invention, shortcomings of the millimeter wave in that the SNR is low due to the low device output and high transmission loss in the free space can be overcome using the new RF transmission technique of 3-dimensional beam steering, and by introducing a micro antenna structure which is electrically and mechanically controlled such that wideband RF communication and 3-dimensional imaging is allowed in a Pico cell environment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile