Communications: radio wave antennas – Antennas – Active sleeve surrounds feed line
Reexamination Certificate
2002-10-02
2004-04-06
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Active sleeve surrounds feed line
C343S791000
Reexamination Certificate
active
06717554
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a substance structure of a dual-band dipole antenna, especially to a substance structure of a dual-band dipole antenna having two internal conductors diverged from the lead of the exposed end thereof, thus an effect of dual-band dipole can be accomplished.
2. Description of the Prior Art
The present invention relates to a substance structure of a dual-band dipole antenna. Presently, the substance structure of the antenna devices for signal-transmission of the point-to-point or the point-to-points wireless area network is shown in FIG.
1
. It consists of an internal conductor
100
having a lead
101
coated with an internal insulation layer
102
, a grounding layer
201
coated or coiled at outside the internal insulation layer
102
, an external conductor
200
coated to the outside of the grounding layer
201
, a layer of electric-conductive material, and a metal tube
300
having an end connected with the grounding layer
201
of the external conductor
200
; the end of the substance of the antenna device is connected to a grounding terminal
400
.
The conventional antenna device for signal-transmission of a wireless area network as described above, although the length and the volume thereof are reduced substantially, it just can be of single-band use, and it is not conformed to the demands with regard to the present users indeed. Although the industries are devoted to improve the single-band antenna to be a dual-band antenna, they failed usually.
The present invention is generated finally after being analyzed and tested repeatedly by the inventor of the present invention who focused on the above-mentioned conventional antenna device that is not conformed to the practical demands and the awkward situation of improving single-band antenna to be a dual-band antenna.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a substance structure of a dual-band dipole antenna, which enables the antenna for the point-to-point or the point-to-points wireless area network to become a dual-band dipole antenna, thus the signal-transmitting and signal-receiving field can be broadened substantially conforming to the practical demands of the users.
REFERENCES:
patent: 4410893 (1983-10-01), Griffee
patent: 4730195 (1988-03-01), Phillips et al.
patent: 6377226 (2002-04-01), Ha et al.
patent: 6552692 (2003-04-01), Zeilinger et al.
Inpaq Technology Co. Ltd.
Nguyen Hoang V.
Troxell Law Office PLLC
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