Small planar antenna with enhanced bandwidth and small strip...

Details Small planar antenna with enhanced bandwidth and small strip... Small planar antenna with enhanced bandwidth and small strip...

2008-04-08

2008-04-08

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S7000MS

Reexamination Certificate

active

07355559

ABSTRACT:
A planar small antenna and a small strip radiator are provided which have increased bandwidth. The small strip radiator has a main strip pattern and a plurality of convoluted strip patterns terminating the main strip pattern at each end. The plurality of convoluted strip patterns are arranged in mirror-symmetrical arrangement with reference to the longitudinal axis of the main strip such that one pair of convoluted strip patterns is convoluted clockwise while another pair is convoluted counterclockwise. As a result, an electrically small antenna radiator requires less metal or conductive material than conventional radiators, and also can operate without adversely affecting the radiation characteristics of the antenna.

REFERENCES:
patent: 3906514 (1975-09-01), Phelan
patent: 6094179 (2000-07-01), Davidson
patent: 7075493 (2006-07-01), Azadegan et al.
patent: 7190319 (2007-03-01), Forster et al.
patent: 2004/0001023 (2004-01-01), Peng
patent: 1 589 680 (2005-10-01), None
patent: WO 03/034544 (2003-04-01), None
patent: WO 03/094293 (2003-11-01), None
patent: WO 2004/047222 (2004-06-01), None
Azadegan R et al:, “Design of miniaturized slot antennas”, IEEE Antennas and Propagation Society International Symposium. 2001 Digest. APS. Boston, MA, Jul. 8-13, 2001, New York, NY: IEEE, US, vol. 1 of 4, Jul. 8, 2001, pp. 565-568, XP010564702.

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