Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2004-07-27
2010-06-15
Owens, Douglas W (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S767000
Reexamination Certificate
active
07737902
ABSTRACT:
The invention relates to a planar antenna realised on a substrate comprising a slot of closed form dimensioned to operate at a given frequency in a short-circuit plane of at least one feed-line. The perimeter of the slot being designed such that p=kλs where k is a whole number greater than 1 and λs the guided wavelength in the slot, the antenna comprising at least one first feed-line placed in an open circuit zone of the slot and a second feed-line placed at a distance d=(2n+1)λs/4 from the first line, where n is an integer greater than or equal to zero.
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H. Arai et al: “Flat antennas for indoor cellular system”, Digest of the Antennas and Propagation Society International Symposiu,, Seattle, WA., Jun. 19-24, 1994, vol. 3, Jun. 20, 1994, pp. 344-347.
Search Report dated Dec. 6, 2004.
Le Bolzer Françoise
Minard Philippe
Thudor Franck
Cromarty Brian J.
Duong Dieu Hien T
Opalach Joseph J.
Owens Douglas W
Shedd Robert D.
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