Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2007-09-11
2007-09-11
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S846000, C343S895000
Reexamination Certificate
active
11376336
ABSTRACT:
A small broadband monopole antenna having a perpendicular ground plane with an electromagnetically coupled feed is provided. The small broadband monopole antenna may be realized as a small antenna having a size of 0.085λ0×0.085λ0×0.085λ0by positioning a folded strip line under a shorted square disc. A resonance of the shorted square disc may be coupled to a resonance of the square folded strip line so as to form a wide bandwidth of about 36.6% of a central frequency of 2.313 GHz based on a VSWR≦2. Also, rectangular slits may be inserted into the perpendicular ground plane to improve a distortion of a radiation pattern that forms on the perpendicular ground plane so as to reduce a backward radiation by 3 dBi or more. The small broadband monopole antenna exhibits a forward radiation pattern similar to that of a general monopole antenna and has a gain of about 2.6 dBi within a bandwidth.
REFERENCES:
patent: 6593887 (2003-07-01), Luk et al.
patent: 2003/0107518 (2003-06-01), Li et al.
patent: 2005/0116867 (2005-06-01), Park et al.
patent: 2006/0170593 (2006-08-01), Watts
Jung Jong-ho
Kim Young-eil
Lee Seong-soo
Moon Young-min
Park Ikmo
Ho Tan
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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