Multiband radio antenna with a flat parasitic element

Details Multiband radio antenna with a flat parasitic element Multiband radio antenna with a flat parasitic element

2003-10-20

2008-08-19

Cumming, William D (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Having particular housing or support of a transceiver

C343S702000, C343S725000

Reexamination Certificate

active

07415248

ABSTRACT:
A multiband radio antenna device (1) for a radio communication terminal, comprising a flat ground substrate (2), and in a plane parallel to said ground substrate a flat parasitic element (7) and a flat antenna element (3). Said antenna element has a longitudinal member (4), a first transverse member (5) extending from a first end portion of said longitudinal member, and a second transverse member (6) extending from a centre portion of said longitudinal member, wherein said parasitic element extends adjacent to an outer portion of and parallel to said second transverse member. A feeding point (8) is disposed at a center portion of said second transverse member. The parasitic element has a first ground connection (9) adjacent to said feeding point, a second ground connection (10) is disposed at an end portion of said second transverse member, and a third ground connection (11) is disposed at a center portion of said first transverse member.

REFERENCES:
patent: 6429819 (2002-08-01), Bishop et al.
patent: 6545640 (2003-04-01), Herve et al.
patent: 2002/0070902 (2002-06-01), Johnson et al.
patent: 2006/0099914 (2006-05-01), Andersson
patent: 2007/0040751 (2007-02-01), Boyle
patent: 1 018 779 (2000-07-01), None
patent: 1 128 466 (2001-08-01), None
patent: 2 800 920 (2001-05-01), None

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