Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2005-02-08
2005-02-08
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S893000
Reexamination Certificate
active
06853348
ABSTRACT:
A dual band linear antenna array, having a set of radiator constructed by four hard linear conductors. The linear conductors are equidistantly arranged at four corners and extend parallel to each other. By serially connecting to a signal feed terminal, the roots of the linear conductors are connected to a copper tube via a coaxial cable external conductor (ground signal). Three of the linear conductors have the same length, which is about one quarter wavelength of the high-frequency electric wave received thereby and transmitted therefrom. The other linear conductor has the length longer than these three linear conductors at about one quarter wavelength of a low-frequency electric wave received thereby and transmitted therefrom. Thereby, an array of dual band antenna is obtained to achieve omni-directional reception and transmission of radiation.
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Hsun Kuo Kuo
Jung Chi Hsiang
Sheng Lai Zih
Golden Bridge Electech Inc.
Ho Tan
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