Electrically small, double loop low backlobe antenna

Details Electrically small, double loop low backlobe antenna Electrically small, double loop low backlobe antenna

1975-05-27

1976-10-05

Lieberman, Eli

Communications: radio wave antennas

Antennas

With terminating resistance at open end

343742, 343845, H01Q 138, H01Q 700

Patent

active

039848388

ABSTRACT:
An electrically small, directive, low backlobe broadband antenna is described. The antenna comprises a pair of radiators. Each of the radiators comprises a pair of orthogonally oriented stripline sections carried on a thin substrate. In one embodiment the radiators are carried on separate substrates placed side by side with a small separation. In another embodiment, the radiators are carried on opposite sides of the same substrate. In each of the embodiments, the radiators are mounted adjacent to a ground plane. A first one of the orthogonal sections is spaced from and extends parallel to the ground plane. The second of the orthogonal sections extends from the first section to the ground plane and is adapted at that point for coupling to the center conductor of a coaxial cable. Means are also provided for coupling the outer conductor or shield of the cable to the ground plane. A resistor is further provided coupled between the ground plane and the free end of each of the first sections of the radiators.

REFERENCES:
patent: 2894124 (1959-07-01), Himmel et al.
patent: 3184746 (1965-05-01), Chatelain
patent: 3268896 (1966-08-01), Spitz
patent: 3808600 (1974-04-01), Bourdier
patent: 3906507 (1975-09-01), Allen

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