Coaxial antenna

Details Coaxial antenna Coaxial antenna

1997-09-24

1999-07-20

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343749, H01Q 922

Patent

active

059261498

ABSTRACT:
A coaxial antenna includes a vertical half-wave dipole with a lower section in form of a sleeve and an upper section in form of a first conductor bar, with the sleeve being dimensioned so as to resonate at a first frequency or first frequency range. A second conductor bar is operatively connected to the free end of the first conductor bar to define an assembly of first and second conductor bars which is dimensioned so as to resonate at a second frequency or second frequency range.

REFERENCES:
patent: 4442438 (1984-04-01), Siwiak et al.
patent: 4494122 (1985-01-01), Garay et al.
patent: 4675687 (1987-06-01), Elliott
patent: 4730195 (1988-03-01), Phillips et al.
patent: 5089829 (1992-02-01), Haruyama et al.

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