Antenna device capable of adjusting frequency

Details Antenna device capable of adjusting frequency Antenna device capable of adjusting frequency

2005-12-06

2005-12-06

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S750000, C343S861000

Reexamination Certificate

active

06972720

ABSTRACT:
An antenna device includes a ground conductor plate, and a radiating conductor plate made of a metal plate, which is spaced from the ground conductor plate. The radiating conductor plate is provided with adjusting means for adjusting the electrical length. Thus, the correction of the electrical lengths can be made even if there is a difference between the electrical lengths of the radiating conductor plate caused by assembling errors, etc. In addition, when the antenna device is used in a state in which it is connected to external equipment, the adjusting means allows the adjustment of the electrical lengths of the radiating conductor plate even if the electrical lengths of the radiating conductor plate are subjected to the electrical influence from the electrical equipment and its surrounding environment.

REFERENCES:
patent: 4167010 (1979-09-01), Kerr
patent: 5410322 (1995-04-01), Sonoda
patent: 5442366 (1995-08-01), Sanford
patent: 5631660 (1997-05-01), Higashiguchi et al.
patent: 5912647 (1999-06-01), Tsuru et al.
patent: 2002-217637 (2002-08-01), None
patent: 2002-237714 (2002-08-01), None

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