Direction finding antenna

Details Direction finding antenna Direction finding antenna

1982-05-10

1985-01-15

Blum, Theodore M.

Communications: radio wave antennas

Antennas

With aircraft

3437925, G09F 930

Patent

active

044941218

ABSTRACT:
A direction finding antenna for use in missiles and the like may include arrays of log periodic monopole antennas. The antennas may be constructed of thin, metallic stub regions laminated to an insulative support backing as a part of a wing of a missile. The antennas are triangular in shape in order to provide improved performance and to conform to the shape of wings on the missile. The antennas perform an aerodynamic function as parts of the wings as well as performing an electromagnetic function in the direction finding system. The antennas are provided with parallel feed lines which extend along the base of the triangular antenna, connecting with antenna stubs on both sides of the support backing, and connecting together at the forward end of the antenna. The antenna stubs are generally rectangular metallic sheets arranged in order of increasing length on the support backing. Electrically longer antenna stubs may be provided with zig-zag convolutions for improved performance at lower radio frequencies.

REFERENCES:
patent: 3110030 (1963-11-01), Cole, Jr.
patent: 3286268 (1966-11-01), Barbano
patent: 4257049 (1981-03-01), Kuo
patent: 4392139 (1983-07-01), Aoyama et al.

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