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:
Dec. 09, 2003
Filed:
May. 02, 2002
Po-Chao Chen, Taipei, TW;
SmartAnt Telecom Co., Ltd., Hsinchu, TW;
Abstract
A circuit-board antenna has a standing wave resonance which is utilized to extend the radiation end of a dipole antenna as its radiation length, e.g. (n+¼) times the wavelength. Half the wavelength in the radiation direction of the dipole antenna is designed to be twisted, the radiation from which cancels with itself, resulting in a radiation gain in the radiation direction. A circuit board is used to make such a dipole antenna. It can conveniently achieve the goal of self cancellation for radiation from the twisty part. The radiation orientation of the antenna can be adjusted to be upward or downward by modifying the extension length between the radiation end and the ground end of the dipole antenna.