Self phased antenna element with dielectric and associated metho

Details Self phased antenna element with dielectric and associated metho Self phased antenna element with dielectric and associated metho

1997-03-31

1997-12-23

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Spiral or helical type

343742, 343872, H01Q 136

Patent

active

057011303

ABSTRACT:
A self phased antenna element with two pairs of arms (110, 120, 130, 140) in a crossed relationship transceives a signal at a resonant frequency. A dielectric (150, 160) is disposed adjacent an arm (130, 140) to obtain a self phased relationship in the arms (110, 120, 130, 140) at the resonant frequency. The arms can form crossed loops or twisted crossed loops such as a quadrifilar helix antenna element. A dielectric collar on arms of the same loop causes arm currents to be equally spaced from one another. The antenna size is reduced and a cross section of the antenna element appears circular without degradation of a gain pattern when the dielectric is used on the certain arm.

REFERENCES:
patent: 3828353 (1974-08-01), Majkrzak et al.
patent: 4697192 (1987-09-01), Hofer et al.
patent: 5406693 (1995-04-01), Egashira et al.
"Spacecraft Antennas", Chapter 20, American Radio Relay League, pp. 20-1 to 20-7.
A. Kumar, Fixed and Mobile Terminal Antennas, Chapter 5, Artech House, Inc., 1991, pp. 163-236.

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