Apparatus for reducing ground effects in a folder-type...

Details Apparatus for reducing ground effects in a folder-type... Apparatus for reducing ground effects in a folder-type...

2006-05-09

2006-05-09

Dinh, Trinh V. (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

Reexamination Certificate

active

07042404

ABSTRACT:
An antenna for a folder type communications handset. The handset comprises first and second enclosures pivotably joined to permit rotation of one enclosure relative to the other enclosure. The antenna is disposed over a ground plane formed in a printed circuit board in the first enclosure. The second enclosure also comprises a ground plane. A feed terminal and a ground terminal of the antenna are disposed to limit field coupling between the feed terminal and the ground plane in the second enclosure. The feed and the ground terminals are each connected to corresponding terminals on the printed circuit board by meanderline conductors.

REFERENCES:
patent: 6573869 (2003-06-01), Moore
patent: 6590543 (2003-07-01), Apostolos
patent: 6653987 (2003-11-01), Lamensdorf et al.
patent: 6819287 (2004-11-01), Sullivan et al.
Harvey, A. F.; “Periodic and Guiding Structures at Microwave Frequencies”; IRE Transactions on Microwave Theory and Techniques; Jan. 1960; pp. 30-61.

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