Helical antenna system

Details Helical antenna system Helical antenna system

2005-03-15

2005-03-15

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

Reexamination Certificate

active

06867747

ABSTRACT:
The invention provides a helical antenna to broadcast a signal from an input line. The antenna includes a base plate and a dielectric rod mounted on the base plate. A conductive helix, surrounds the dielectric rod, and the rod has a pitch angle of at least 12 degrees. A matching network is connected to the conductive helix, to match an impedance of the conductive helix with an impedance of the signal.

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patent: 6292156 (2001-09-01), Openlander
patent: 6373448 (2002-04-01), Chun

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