Dual diagonally fed electric microstrip dipole antennas

Details Dual diagonally fed electric microstrip dipole antennas Dual diagonally fed electric microstrip dipole antennas

1977-10-06

1978-11-14

Smith, Alfred E.

Communications: radio wave antennas

Antennas

Microstrip

343830, 343846, H01Q 138, H01Q 938, H01Q 148

Patent

active

041258398

ABSTRACT:
Circularly polarized microstrip antennas consisting of thin electrically ducting, square-shaped radiating elements formed on one surface of a dielectric substrate and having a ground plane on the opposite surface of the substrate. Two feed points are used to provide a circular polarized radiation pattern. The feed points are located along the centerlines of the antenna length and width or along the diagonal lines of the element and the input impedances can be varied by moving the feed points along both centerlines or both diagonal lines from the centerpoint of the element. The antennas can be notched in from the edges of the radiating element along the centerlines of the element width and length, or along opposite diagonal lines of the element, to the optimum input impedance match feed point.

REFERENCES:
patent: 3803623 (1974-04-01), Charlot, Jr.
patent: 3921177 (1975-11-01), Munson
patent: 3972049 (1976-07-01), Kaloi
patent: 3984834 (1976-10-01), Kaloi
patent: 4012741 (1977-03-01), Johnson

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