Helical antenna element

Details Helical antenna element Helical antenna element

1998-01-07

2000-08-29

Le, Hoanganh

Communications: radio wave antennas

Antennas

Spiral or helical type

343745, 343750, H01Q 136

Patent

active

061115541

ABSTRACT:
A helical antenna element including a metallic coil, a dielectric support element inserted in the coil, the support element being formed with a generally hollow core, and a dielectric tuning element inserted into said core, the tuning element having at least one adjustable dimension which when adjusted, provides a tuning of an antenna characteristic.

REFERENCES:
patent: 2931034 (1960-03-01), Harrison et al.
patent: 3541554 (1970-11-01), Shirey
patent: 3581249 (1971-05-01), Spangler et al.
patent: 3798654 (1974-03-01), Martino et al.
patent: 4080604 (1978-03-01), Wasniewski
patent: 4725395 (1988-02-01), Gasparaitis et al.
patent: 5341149 (1994-08-01), Salimaa et al.
patent: 5469177 (1995-11-01), Rush et al.
patent: 5661496 (1997-08-01), Baek et al.
patent: 5883600 (1999-03-01), Kukura

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