Antenna and wireless communication device

Details Antenna and wireless communication device Antenna and wireless communication device

2008-05-20

2008-05-20

Mancuso, Huedung (Department: 2821)

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

Reexamination Certificate

active

07375695

ABSTRACT:
An antenna and a wireless communication device are adapted to have a plurality of resonant frequencies changed simultaneously by a desired range at a low voltage. The antenna includes a first antenna section and a second antenna section. The first antenna section includes a feeding electrode, a frequency-changing circuit, and a radiating electrode, and the second antenna section includes the feeding electrode, a first reactance circuit, and an additional radiating electrode. The frequency-changing circuit has a circuit configuration in which the first reactance circuit and the second reactance circuit are connected. When a control voltage Vc is applied to a node P, the reactances of the first and second reactance circuits change in accordance with the magnitude of the control voltage Vc, so that a resonant frequency f1of the first antenna section and a resonant frequency f2of the second antenna section change simultaneously.

REFERENCES:
patent: 6492953 (2002-12-01), Apostolos
patent: 6606069 (2003-08-01), Kitamura et al.
patent: 6670925 (2003-12-01), Iwai et al.
patent: 6765536 (2004-07-01), Phillips et al.
patent: 7034760 (2006-04-01), Nakamura
patent: 7129907 (2006-10-01), Lin et al.
patent: 7202790 (2007-04-01), Copeland et al.
patent: 2002/0044092 (2002-04-01), Kushihi
patent: 2002/0154063 (2002-10-01), Klaavo et al.
patent: 2002/0180558 (2002-12-01), Iwai et al.
patent: 2003/0003862 (2003-01-01), Yoshida et al.
patent: 2006/0197711 (2006-09-01), Sekiguchi et al.
patent: 2007/0091006 (2007-04-01), Thober et al.
patent: 2002-076750 (2002-03-01), None
patent: 2002-158529 (2002-05-01), None
patent: 2002-232313 (2002-08-01), None
patent: 2003-051712 (2003-02-01), None
patent: 2004-320611 (2004-11-01), None
Official communication issued in the counterpart International Application No. PCT/JP2005/022342, mailed on Mar. 14, 2006.

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