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:
Sep. 20, 2011
Filed:
Nov. 06, 2008
Kuo-fong Hung, Taipei, TW;
Yi-cheng Lin, Taipei, TW;
Kuo-Fong Hung, Taipei, TW;
Yi-Cheng Lin, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
A coupling device for transmitting a wireless signal is provided. The coupling device includes a substrate, a ground layer and a feed conductor. The substrate includes a first surface and a second surface opposite to the first surface. The ground layer is disposed on the second surface having a circular opening, and the circular opening has an opening edge and an opening center. The feed conductor extends on the first surface, including a conductive portion and a feed portion connected thereto. The feed portion corresponds to the circular opening, wherein the opening center is on a base line, a radial line is formed between the opening center and the opening edge, a radial distance is formed on the radial line between the opening edge and the feed portion, and a length of the radial distance varies with an angle between the radial line and the base line.