Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2007-07-31
2009-10-27
Owens, Douglas W (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S846000, C343S847000, C343S829000, C343S803000, C343S842000, C343S741000, C343S744000, C343S748000
Reexamination Certificate
active
07609213
ABSTRACT:
A broadband antenna is capable of generating an upper resonant mode (at about 700 MHz) from a first radiating arm and a lower resonant mode (at about 500 MHz) from a second radiating arm. The first and second radiating arms are bent at least one time. An open end of the second radiating arm is extended toward an open end of the first radiating arm with a predefined distance there between. The predefined distance can be adjusted to improve the impedance matching of lower resonant mode, which can be further combined with the upper resonant mode to achieve a broad bandwidth covering the complete spectrum of digital TV channels (470-862 MHz).
REFERENCES:
patent: 6870506 (2005-03-01), Chen et al.
patent: 6963310 (2005-11-01), Horita et al.
patent: 7034754 (2006-04-01), Hung et al.
patent: 7253775 (2007-08-01), Qi et al.
patent: 2007/0132646 (2007-06-01), Hung et al.
patent: D105579 (2005-07-01), None
patent: M269583 (2005-07-01), None
Chou Jui-Hung
Li Wei-Yu
Su Saou-Wen
Wong Kin-Lu
Yang Yu-Chan
Hu Jennifer F
Kile Goekjian Reed & McManus PLLC
Lite-On Technology Corp.
National Sun Yat-Sen University
Owens Douglas W
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