Tri-band antenna

Details Tri-band antenna Tri-band antenna

2006-03-28

2006-03-28

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S895000

Reexamination Certificate

active

07019696

ABSTRACT:
A tri-band antenna and method for forming the same are disclosed. The antenna comprises a meander line radiator, a tapered line radiator coupled to the meander line radiator, a straight line radiator coupled to the tapered line radiator, and a dielectric layer. Exemplary meander line, tapered line, and straight line radiators are formed as microstrip structures overlying the dielectric layer surfaces. According to one embodiment, the meander line radiator is formed on the dielectric top surface and is connected to the tapered line radiator on the dielectric bottom surface through a via. The straight line radiator is connected to the tapered line radiator output on the bottom surface, and is unterminated. In one aspect, the combination of the meander line radiator, tapered line radiator, and straight line radiator forms effective electrical lengths corresponding to the cellular frequency band, the GPS frequency band, and the PCS frequency band.

REFERENCES:
patent: 6741213 (2004-05-01), Jenwatanavet
patent: 2003/0006936 (2003-01-01), Aoyama et al.
patent: 2003/0092420 (2003-05-01), Sugimoto et al.

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