Antenna device and wireless communication apparatus

Details Antenna device and wireless communication apparatus Antenna device and wireless communication apparatus

2007-12-12

2008-12-16

Phan, Tho G (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS

Reexamination Certificate

active

07466277

ABSTRACT:
A compact and thin antenna device can be mounted in a small area of a substrate and has a multiband capability adaptable to various applications. The antenna device includes a chip antenna, an antenna element, and a chip antenna. The chip antenna is produced by forming a radiation electrode on the surface of a dielectric base, and mounting a frequency variable circuit on the radiation electrode. Thus, it becomes possible to obtain a resonant frequency f1of the chip antenna and further to vary the resonant frequency f1. The antenna element is produced by adding an auxiliary element to an additional radiation electrode for the chip antenna. The chip antenna includes a radiation electrode on a dielectric base and a conductive pattern. Thus, a resonant frequency f2and a resonant frequency f3of the antenna element and the chip antenna, respectively, can be obtained.

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Official communication issued in the International Application No. PCT/JP2006/306701, mailed on May 2, 2006.

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