Multiband antenna

Details Multiband antenna Multiband antenna

2005-11-08

2005-11-08

Wong, Don (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

Reexamination Certificate

active

06963308

ABSTRACT:
An internal multiband antenna and a radio device intended particularly for small-sized radio devices. The antenna has a relatively wide surface radiator (330), which is electromagnetically connected to the antenna port of the radio device via a separate feed element (320). At least two useful resonances are generated with the aid of the feed element, and at least one inherent resonance of the radiator is also utilized. The radiator has a hole (350), by which one useful additional resonance is generated. An oscillation is excited in the hole by placing the feed element close to its edge and by suitably choosing the locations of the feed point (F) and the shorting point (S) of the feed element. The frequency of the hole resonance is finely tuned by varying the capacitance between the hole's edge and the ground plane at a suitable place (331). An operating band of the antenna can be widened by means of said additional resonance. If a mobile station has a rear display it is possible at the same time to use its hole as a radiator.

REFERENCES:
patent: 5786793 (1998-07-01), Maeda et al.
patent: 5926139 (1999-07-01), Korisch
patent: 5936583 (1999-08-01), Tadahiko et al.
patent: 6466170 (2002-10-01), Zhou
patent: 6529168 (2003-03-01), Mikkola et al.
patent: 6573869 (2003-06-01), Moore
patent: 6664931 (2003-12-01), Nguyen et al.
patent: 0 707 355 (1996-04-01), None
patent: 0 923 158 (1999-06-01), None
patent: 1 067 627 (2001-01-01), None
patent: 1 094 545 (2001-04-01), None
patent: 1 146 590 (2001-10-01), None
patent: 1 248 316 (2002-10-01), None
patent: WO-02/50948 (2002-06-01), None
Patent Abstracts of Japan, vol. 1999, No. 10, Aug. 31, 1999, Application JP 11 127010 (Sony Corp.).

Affiliated with

Also associated with

Rating

Multiband 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 Multiband antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiband antenna will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3454624