Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2007-05-09
2010-02-09
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S745000, C343S876000
Reexamination Certificate
active
07659856
ABSTRACT:
An extremely miniaturized digital TV signal reception antenna built in a mobile device includes a substrate, an antenna unit and a switch unit. The substrate is provided with a plate having a grounding metallic surface and a first clearance surface. A second clearance surface is provided on the same side of the grounding metallic surface with a metallic microstrip line for electrically connecting to an output end of the switch unit. Input ends of the switch unit are electrically connected with a plurality of leads of the first clearance surface. The other ends of the plurality of leads are electrically connected with the antenna unit. Finally, when a tuner of a portable digital television switches the channels, signals of the switched channel are simultaneously output to the switch unit. According to the frequency of that channel, the switch unit automatically switches to a suitable range of bandwidth for receiving the digital TV signals, thereby performing the reception of the digital TV signals.
REFERENCES:
patent: 7129894 (2006-10-01), Winter
patent: 2006/0214857 (2006-09-01), Ollikainen
patent: M277120 (2005-10-01), None
patent: M279994 (2005-11-01), None
patent: M284146 (2005-12-01), None
patent: M286443 (2006-01-01), None
Chu Te-Yi
Yang Tsai-Yi
Chen Shih-Chao
Chun-Ming Shih
Cirocomm Technology Corp.
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