Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Reexamination Certificate
2006-08-01
2006-08-01
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
C343S853000, C343S702000
Reexamination Certificate
active
07084831
ABSTRACT:
A wireless device includes a first antenna element resonating with a first frequency, a first feeding point coupled to the first antenna element and disposed on a ground plane in the wireless device, and a first matching circuit of which its first end is coupled to the first feeding point. The wireless device also includes a second antenna element resonating a second frequency higher than the first frequency, a second feeding point coupled to the second antenna element and disposed on the ground plane, a second matching circuit of which one end is coupled to the second feeding point, and a radio circuit coupled via a transmission line to a common connection point shared by respective second ends of the first and second matching circuits.
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Satoh Yuki
Takagi Naoyuki
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