Communications: radio wave antennas – Antennas – Antenna with parasitic director
Reexamination Certificate
2007-12-20
2011-11-15
Choi, Jocob Y (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna with parasitic director
C343S836000, C343S876000
Reexamination Certificate
active
08059056
ABSTRACT:
A directional antenna and a portable electronic device using the same are provided. The directional antenna includes L-shaped radiator, L-shaped oscillator, and L-shaped reflector and it is preferred that the directional antenna is positioned at corners of the substrate. The L-shaped radiator is made resonant by the L-shaped oscillator and has higher gain to maximize performance of signal transmission. The directional antenna achieves signal transmission in a specific direction over a long distance by the L-shaped reflector. In addition, with the gravity sensor, the processor and the switches, the directional antenna is automatically adjusted to a predetermined direction to transmit and receive signals even through orientation of the electronic device is changing at any time.
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patent: 7439921 (2008-10-01), Hu et al.
patent: 7656353 (2010-02-01), Qi et al.
patent: 7834813 (2010-11-01), Caimi et al.
patent: 2005/0184914 (2005-08-01), Ollikainen et al.
patent: 2008/0001824 (2008-01-01), Castaneda et al.
patent: WO2005041350 (2005-05-01), None
Ma Chin-Hung
Tsai Shih-Liang
Altis Law Group, Inc.
Choi Jocob Y
Foxconn Communication Technology Corp.
Karacsony Robert
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