Conical spiral antenna

Details Conical spiral antenna Conical spiral antenna

1987-03-20

1990-07-31

Hille, Rolf

Communications: radio wave antennas

Antennas

Spiral or helical type

H01Q 136

Patent

active

049453637

ABSTRACT:
A photoresist-type chemical etching process is used to define a computer-generated flat pattern of conductors as if a complex conical spiral had been cut apart along a straight line through the apex and laid flat. The substrate in the shape of a circular sector is bent into a cone and the radial edges are joined in a seam. The split turns of the spiral are electrically interconnected across the seam.

REFERENCES:
patent: 3034121 (1962-05-01), Riblet
patent: 3246245 (1966-04-01), Turner
patent: 3564553 (1971-11-01), Leonard
patent: 3573840 (1971-04-01), Gouillou et al.
patent: 3618114 (1971-11-01), Dietrich
patent: 3649394 (1972-03-01), Erickson
patent: 3681772 (1972-09-01), Ingerson
patent: 3713162 (1973-01-01), Munson et al.
patent: 3907565 (1975-09-01), Burton et al.
patent: 4204212 (1980-05-01), Sindoris et al.
patent: 4243993 (1981-01-01), Lamberty et al.
patent: 4675690 (1987-06-01), Hoffman
"The Handbook of Antenna Design", vol. 1, Editors, A. W. Rudge et al., pp. 506-521.

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