Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
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.
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"The Handbook of Antenna Design", vol. 1, Editors, A. W. Rudge et al., pp. 506-521.
Hille Rolf
Revlon Inc.
Wimer Michael C.
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