Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-02-22
2005-02-22
Lee, Wilson (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S795000, C343S730000
Reexamination Certificate
active
06859176
ABSTRACT:
The present invention relates to a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar dielectric substrate has two parallel surfaces. The first conductive pattern is arranged on one surface of the substrate, and is provided with a first feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the first feeder line and designed such that some of them operate in a high frequency band (4.9 to 5.85 GHz frequency band), and others thereof operate in a low frequency band (2.4 to 2.5 GHz frequency band). The second conductive pattern is arranged on the other surface of the substrate, and provided with a second feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the second feeder line arid up-down symmetrically arranged with respect to the radiating elements on the first conductive pattern.
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Dinh Trinh Vo
Institute Information Technology Assessment
Lee Wilson
Piper Rudnick LLP
Sunwoo Communication Co., Ltd.
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