Antenna device

Details Antenna device Antenna device

2006-03-28

2006-03-28

Wimer, Michael C. (Department: 2828)

Communications: radio wave antennas

Antennas

With grounding structure

C343S7000MS

Reexamination Certificate

active

07019709

ABSTRACT:
An antenna device has a first radiation plate and a second radiation plate of which a diameter or one side is about ½ wavelength in electrical length disposed on a ground plate at an arbitrary interval. A first power feed port and a second power feed port are provided on the first radiation plate and are disposed so that straight lines linking each power feed port position and a middle point of the first radiation plate may be orthogonal to each other. A third power feed port and a fourth power feed port are provided on the second radiation plate and are disposed so that straight lines linking each power feed port position and a middle point of the second radiation plate may be orthogonal to each other. The straight lines are disposed to have an angle of 45 degrees to a straight line linking the first power feed port position and the middle point of the first radiation plate and to a straight line linking the second power feed port position and the middle point of the first radiation plate.

REFERENCES:
patent: 5061943 (1991-10-01), Rammos
patent: 5216430 (1993-06-01), Rahm et al.
patent: 5661494 (1997-08-01), Bondyopadhyay

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