Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2006-12-12
2006-12-12
Dinh, Trinh Vo (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000, C343S846000
Reexamination Certificate
active
07148849
ABSTRACT:
A multi-band antenna having a low frequency operating band and a high frequency operating band is provided. The multi-band antenna includes a radiating element, a grounding plane, a short-circuiting element and a short-circuiting regulator. The radiating element has a feed-in point for transmitting signals and several radiation arms. The first and the second radiation arms respectively have a first resonant mode and a second resonant mode which jointly generate a high frequency operating band, while the third radiation arm has a third resonant mode which generates a low frequency operating band. The grounding plane is connected to the radiating element via the short-circuiting element to miniaturize the scale of the antenna. The short-circuiting regulator of the grounding plane enhances the impedance matching when high frequency resonance occurs.
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patent: 6812892 (2004-11-01), Tai et al.
patent: 6844853 (2005-01-01), Tai et al.
patent: 6861986 (2005-03-01), Fang et al.
patent: 6864845 (2005-03-01), Kuo et al.
patent: 2003/0189522 (2003-10-01), Zeilinger
patent: 2004/0104853 (2004-06-01), Chen
patent: 2005/0190108 (2005-09-01), Lin et al.
Dinh Trinh Vo
Quanta Computer Inc.
Rabin & Berdo PC
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