Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2004-12-09
2008-12-23
Owens, Douglas W. (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S7000MS, C343S850000
Reexamination Certificate
active
07468700
ABSTRACT:
An adjustable multi-band planar antenna especially applicable in mobile terminals. A conductive element is placed in the structure of an antenna of PIFA type such that the conductive element has a significant electromagnetic coupling to the radiating plane. The parasitic element at issue is connected to a matching circuit (550) consisting of several reactive element. The parasitic element, the matching circuit and a line (540) between them constitute an adjusting circuit of the antenna. The circuit values of the matching circuit can be chosen from at least two alternatives. Alteration in the circuit values changes the coupling between the parasitic element and the ground, in which case an operation band of the antenna is displaced, because the electric length of the antenna's part corresponding that band is changed, measured from the short-circuit point. Regarding the shiftable operation band, proper impedance matching and a proper efficiency can be arranged for the antenna.
REFERENCES:
patent: 5585810 (1996-12-01), Tsuru et al.
patent: 5874926 (1999-02-01), Tsuru et al.
patent: 6255994 (2001-07-01), Saito
patent: 6353443 (2002-03-01), Ying
patent: 6462716 (2002-10-01), Kushihi
patent: 6693594 (2004-02-01), Pankinaho et al.
patent: 6825818 (2004-11-01), Toncich
patent: 6836249 (2004-12-01), Kenoun et al.
patent: 6975278 (2005-12-01), Song et al.
patent: 0 400 872 (1990-12-01), None
patent: 1 052 723 (2000-11-01), None
patent: 1 113 524 (2001-07-01), None
patent: 113588 (2000-11-01), None
patent: 10 28013 (1998-01-01), None
patent: 10 224142 (1998-08-01), None
patent: 2001 53543 (2001-02-01), None
patent: WO-02/11236 (2002-02-01), None
patent: WO-02/067375 (2002-08-01), None
patent: WO-02/078124 (2002-10-01), None
Examination Report dated May 3, 2006 issued by the EPO for European Patent Application No. 04 396 079.8.
Darby & Darby P.C.
Owens Douglas W.
Pulse Finland Oy
Vu Jimmy T
LandOfFree
Adjustable multi-band antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable multi-band antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable multi-band antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4035185