Circularly polarized zigzag antenna

Details Circularly polarized zigzag antenna Circularly polarized zigzag antenna

1979-08-29

1981-02-10

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343818, H01Q 136

Patent

active

042505097

ABSTRACT:
A zigzag antenna for broadcasting circularly polarized electromagnetic energy at a mean wavelength L. The zigzag antenna includes a zigzag shaped radiating element (10, 12) composed of plural essentially linear segments (20). These segments, each L/4 in length, are disposed end-to-end with each segment being at right angles to adjacent segments. L/2 non-radiating delay lines (22) are interposed between adjacent segments at alternate junctions between the segments, with the segments being directly joined at the remaining junctions. When fed with electromagnetic energy, the element will broadcast circularly polarized waves since each pair of adjacent segments are orthogonal in space and phase. In the described antenna embodiment, two radiators (10, 12) are arranged above a reflecting panel (16), and are fed from a central feed point (14).

REFERENCES:
patent: 4031537 (1977-06-01), Alford
patent: 4160978 (1979-07-01), Du Hamel

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