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:
Feb. 21, 2006
Filed:
Sep. 30, 2004
Shyh-jong Chung, Hsinchu, TW;
Yu-shin Wang, Taichung, TW;
Shyh-Jong Chung, Hsinchu, TW;
Yu-Shin Wang, Taichung, TW;
Etop Technology Co., Ltd., Miaoli, TW;
Abstract
An antenna has a central core with a central coupling region. A pair of helix antenna lines is formed a surface of the central core. A balun transformer is formed on a circuit board and electrically coupled to the pair of radiating antenna lines. Wherein, the circuit board has a protruding structure to affixing into the central coupling region of the central core. A signal input/output (I/O) end of the antenna is at another end of the balun transformer. The balun transformer preferably uses the LC resonators in two paths with a desired equivalent resonant length, so as to preferably produce the difference by half wavelength.