Flat antenna

Details Flat antenna Flat antenna

2005-10-25

2005-10-25

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S895000

Reexamination Certificate

active

06958728

ABSTRACT:
A flat antenna has multiple overlapped dielectric substrates on which printed circuits are formed and interconnected to constitute first and second radiation units to supply a dual-operation frequency band. The first radiation unit is created by multiple circuits with different shapes that are interconnected to form a three-dimensional configuration. The second radiation unit is created by an L-shaped circuit and electrically connects to the first radiation unit at a common feeding node. By properly adjusting the circuit length of the first radiation unit or the second radiation, it is easy to acquire a desired resonance frequency value and frequency ratio.

REFERENCES:
patent: 5541610 (1996-07-01), Imanishi et al.
patent: 5798737 (1998-08-01), Kanaba et al.
patent: 5818398 (1998-10-01), Tsuru et al.
patent: 5870065 (1999-02-01), Kanba et al.
patent: 5870066 (1999-02-01), Asakura et al.
patent: 5933116 (1999-08-01), Suesada et al.
patent: 6028568 (2000-02-01), Asakura et al.
patent: 6064351 (2000-05-01), Mandai et al.

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