Dual band linear antenna array

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

Reexamination Certificate

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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.

REFERENCES:
patent: 4320760 (1982-03-01), Sun et al.
patent: 5521608 (1996-05-01), Brandt et al.
patent: 6275197 (2001-08-01), Behr
patent: 6369770 (2002-04-01), Gothard et al.
patent: 6492959 (2002-12-01), Heatherwick et al.
patent: 6529172 (2003-03-01), Zimmerman
patent: 20030193446 (2003-10-01), Chen
patent: 20040075615 (2004-04-01), Engargiola et al.

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