Multi-band antenna for GSM, UMTS, and WiFi applications

Details Multi-band antenna for GSM, UMTS, and WiFi applications Multi-band antenna for GSM, UMTS, and WiFi applications

2006-05-17

2008-10-07

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S846000

Reexamination Certificate

active

07432860

ABSTRACT:
The multi-band antenna described herein includes multiple antenna elements that collectively resonate in multiple different frequency bands. One exemplary antenna includes first and second vertically spaced antenna elements that connect to a ground plane. A feed antenna element positioned between the first and second antenna elements connects to an antenna feed. The electromagnetic coupling produced by the arrangement of these antenna elements produces multiple resonant frequencies, and therefore, defines multiple operating frequency bands of the multi-band antenna.

REFERENCES:
patent: 5898405 (1999-04-01), Iwasaki
patent: 6650294 (2003-11-01), Ying et al.
patent: 6727855 (2004-04-01), Nalbandian
patent: 6795028 (2004-09-01), Stutzman et al.
patent: 2001/0043161 (2001-11-01), Tseng et al.
patent: 2003/0058169 (2003-03-01), Heyde
patent: WO0235652 (2002-05-01), None
Invitation to Pay Additional Fees, International Application No. PCT/US2007/060304, Mailing Date: Nov. 22, 2007.

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