Inverted-F antenna

Details Inverted-F antenna Inverted-F antenna

2007-02-27

2007-02-27

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000

Reexamination Certificate

active

11211539

ABSTRACT:
An inverted-F antenna comprises a microwave plate, a dielectric substrate, a radiating metal sheet, a ground surface, a shorting metal strip, and a feeding metal strip. The radiating metal sheet comprises a connecting metal sheet, first, second, and third child radiating metal sheets, a matching metal sheet, a slot, a shorting point, and a feeding point. The first child radiating metal sheet is for forming a low frequency operating mode. The second child radiating metal sheet is for forming a high frequency operating mode. The third child radiating metal sheet is for adjusting operating frequency and bandwidth of the second operating mode. The slot, the shorting point, and the feeding point are for adjusting impedance matching. The grounding surface is for increasing the operating bandwidth of the low frequency operating mode. The shorting metal sheet and the feeding metal sheet are for grounding the antenna and signal transmission.

REFERENCES:
patent: 6448932 (2002-09-01), Stoiljkovic et al.
patent: 6657593 (2003-12-01), Nagumo et al.
patent: 6727854 (2004-04-01), Fang et al.
patent: 7113133 (2006-09-01), Chen et al.
patent: 2003/0122722 (2003-07-01), Sugiyama et al.
patent: 2004/0085245 (2004-05-01), Miyata et al.

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