Eccentric spiral antenna

Details Eccentric spiral antenna Eccentric spiral antenna

2005-09-20

2005-09-20

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S876000

Reexamination Certificate

active

06947010

ABSTRACT:
A system includes a support device and an elongated spiral antenna coupled to the support device. The elongated spiral antenna has a contracted portion and an expanded portion. The expanded portion provides beam steering and directivity. The system also includes a feed line coupled to the elongated spiral antenna. A method for forming the elongated spiral antenna uses a predetermined formula to form arms of the elongated spiral antenna. The arms can be formed by printing the arms on a printed circuit board.

REFERENCES:
patent: 3530486 (1970-09-01), Strider
patent: 4559539 (1985-12-01), Markowitz et al.
patent: 5227807 (1993-07-01), Bohlman et al.
patent: 6023250 (2000-02-01), Cronyn
patent: 6300918 (2001-10-01), Riddle et al.

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