Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S789000
Reexamination Certificate
active
07079078
ABSTRACT:
A patch antenna apparatus includes an antenna element and a metal frame, which are disposed on a ground plane. The antenna element has a dielectric substrate, which has a patch electrode on the top surface and has a ground electrode on the bottom surface. The patch electrode is connected to current-feed pins. The metal frame is positioned so as to surround the peripheral surface of the dielectric substrate. The height dimension of the metal frame is set to be slightly larger than the thickness dimension of the dielectric substrate. Electromagnetic radiation radiated from the antenna element is reflected upon reaching the metal frame. Thus, the metal frame causes interference with the electromagnetic radiation such that the traveling direction of the electromagnetic radiation is redirected closer to the lateral direction.
REFERENCES:
patent: 6181279 (2001-01-01), Van Hoozen
patent: 6731243 (2004-05-01), Taira et al.
patent: 6756942 (2004-06-01), Heyde
patent: 6801167 (2004-10-01), Shibata
patent: 06-224620 (1994-08-01), None
patent: 2003-234617 (2003-08-01), None
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Nguyen Hoang V.
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