Multi-band antenna

Details Multi-band antenna Multi-band antenna

2006-10-10

2006-10-10

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS

Reexamination Certificate

active

07119747

ABSTRACT:
A multi-band antenna (1) used in an electronic device and formed of a metallic sheet by defining holes therein, including a first radiating portion (30), a second radiating portion (31), a third radiating portion (32), a ground portion (2), and a coaxial transmission line (4). The first radiating portion, the ground portion and the coaxial transmission line cooperatively form a loop antenna operated at a higher frequency band of about 5.15–5.875 GHz. The second radiating portion, the ground portion and the coaxial transmission line cooperatively form a first inverted-F antenna operated at another higher frequency band of about 5.725–5.875 GHz. The third radiating portion, the ground portion and the coaxial transmission line cooperatively form a second inverted-F antenna operated at a lower frequency band of about 2.4–2.5 GHz.

REFERENCES:
patent: 6759990 (2004-07-01), Rossman
patent: 6816127 (2004-11-01), McKivergan et al.
patent: 6844853 (2005-01-01), Tai et al.
patent: 6861986 (2005-03-01), Fang et al.
patent: 2003/0222823 (2003-12-01), Flint

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