Broadband monopole

Details Broadband monopole Broadband monopole

2006-09-26

2006-09-26

Dinh, Trinh (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000

Reexamination Certificate

active

07113146

ABSTRACT:
A broadband monopole is preferably formed as a single arm helical winding formed from copper, aluminum, or other suitable materials. The monopole is embedded in a lossy dielectric material that may include, for example, a potting material and a polyurethane resin or carbon-loaded ceramic shell. In alternate embodiments, the helical winding may be used without the dielectric material, although such an embodiment is not preferred because the input impedance is oscillatory and difficult to match. The resulting antenna operates over an extremely broad band and provides very uniform input impedance.

REFERENCES:
patent: 4435713 (1984-03-01), Gasparaitis et al.
patent: 5231412 (1993-07-01), Eberhardt et al.
patent: 6094178 (2000-07-01), Sanford
patent: 6320552 (2001-11-01), Volman et al.
patent: 6384798 (2002-05-01), Barta et al.
patent: 6441795 (2002-08-01), Volman
patent: 2003/0043080 (2003-03-01), Saito et al.

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