Multi-band flat antenna

Details Multi-band flat antenna Multi-band flat antenna

2006-06-06

2006-06-06

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S895000

Reexamination Certificate

active

07057565

ABSTRACT:
A multi-band flat antenna has multiple compressed dielectric substrates on which printed circuits are formed and interconnected to constitute first, second and third radiation units to supply three frequency bands. The first radiation unit is created by multiple circuits of 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. The third radiation unit is formed by a crooked conductive wire. With the foregoing configuration, the size is minimized as far as possible. By properly adjusting the circuit length of the first/third radiation units as well as the second radiation unit, it is easy to acquire a desired resonance frequency value and ratio.

REFERENCES:
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patent: 6028568 (2000-02-01), Asakura et al.
patent: 6064351 (2000-05-01), Mandai et al.
patent: 6075491 (2000-06-01), Dakeya et al.
patent: 6958728 (2005-10-01), Liu

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