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:
Jul. 23, 2002
Filed:
Mar. 20, 2001
Szu-Nan Tsai, Tu-Chen, TW;
Hsiang-Hui Shen, Tu-Chen, TW;
Hsin Kuo Dai, Tu-Chen, TW;
Kun Te Cheng, Tu-Chen, TW;
Hsien Chu Lin, Tu-Chen, TW;
Chieh-Chao Yu, Tu-Chen, TW;
Chih-Kai Huang, Tu-Chen, TW;
Hon Ia Precision Ind. Co., Ltd., Taipei Hsien, TW;
Abstract
A dipole antenna for selecting an antenna polarization plane of the strongest polarization energy includes at least two dipole antenna elements ( ) arranged perpendicularly to each other to form a single antenna, a PCB ( ), and two feeding lines ( ). Each dipole antenna element includes two T-shaped dipole arms ( ). This structure makes use of two planes of the XZ-plane, XY-plane and YZ-plane, and also makes the dipole antenna more compact. The antenna obtains optimum polarization energy by selecting the strongest energy plane. This achieves maximized radiation efficiency under any particular orientation of the dipole antenna. The strongest energy plane is selected by controlled switching, by means of dual-fed signal mode. The dipole arms of each dipole antenna element are disposed on opposite surfaces ( ) of the PCB, to minimize interference.