Title: Wide frequency band planar antenna
Application Number: 200610140076 Application Date: 2006.10.18
Publication Number: 1972007 Publication Date: 2007.05.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01Q1/38;H01Q13/08;H01Q5/01;H01Q9/30
Applicant(s) Name: Jiang Chyun Intellectual Property Office Address:
Inventor(s) Name: Chi Sheng-yuan;Chung Shyh-jong;Chen Yu-cheng
Attorney & Agent: shouning zhanghua hui
Abstract:
    A wide frequency band planar antenna comprises an elongated portion, substantially parallel to a circumferential edge of a ground pattern and comprising one end connected to a feeding transmission line, wherein there is a gap between the elongated portion and the circumferential edge of the ground pattern; a body stub and an impedance-matching-adjusting pattern for adjusting an impedance matching between the wide frequency band planar antenna and the feeding transmission line; wherein the gap value is less than 2 mm so as to enable the wide frequency band antenna to operate at a wide range of frequencies ranging from 2.3 GHz to near 6 GHz, thereby allowing the wide frequency band antenna to be applied in both WiFi LAN and WiMAX MAN. The wide frequency band planar antenna of the present invention can be well applied in both WiFi LAN and WiMAX MAN and thus provide the multiple frequency broad-bands with their central frequencies ranging from 2.3 GHz to 5.8 GHz (or near 6 GHz). Due to its simple structure, its fabricating procedures can be significantly simplified, thereby the production yield is improved.
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