Helical antenna

Details Helical antenna Helical antenna

1998-05-07

2000-06-13

Wong, Don

Communications: radio wave antennas

Antennas

Spiral or helical type

343853, H01Q 136

Patent

active

060755016

ABSTRACT:
A helical antenna comprising a cylindrical dielectric member 1, four spiral conductors 2a to 2d which are wound around the outer wall of the cylindrical dielectric member 1, four spiral conductors 3a to 3d which are attached to the inner wall of the cylindrical dielectric member 1, and power supply circuits 4, 5 for supplying high-frequency power to the spiral conductors 2a to 2d and the spiral conductors 3a to 3d respectively. That is, the spiral conductors serving as radiation elements are disposed at the outside and inside of the cylindrical dielectric member, and the outer and inner conductors are operated as independent helical antennas. These spiral conductors are connected to the power supply circuits for supplying the high-frequency power having desired amplitude and phase.

REFERENCES:
patent: 5255005 (1993-10-01), Terret et al.
patent: 5828348 (1995-09-01), Tassoudji et al.
A. Sharaiha, et al., "Printed Quadrifilar Resonant Helix Antenna with Integrated Feeding Network", Electronics Letters, Feb. 13, 1997, vol. 33, No. 4, pp. 256-257.

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