Doppler radio direction finding antenna

Details Doppler radio direction finding antenna Doppler radio direction finding antenna

2006-08-29

2009-06-16

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

Reexamination Certificate

active

07548202

ABSTRACT:
A radio direction finding antenna is disclosed. A dielectric material is configured to rotate about an axis of rotation. The dielectric material has a first conductive surface. A radiating element or array of radiating elements are disposed within the dielectric material and are electrically isolated from the first conductive surface. The radiating element or array of radiating elements are positioned a distance away from the axis of rotation and are configured to be resonant at a predetermined frequency in the case of a single radiating element or various frequencies in the case of an array of radiating elements. Rotation of the dielectric material and radiating element or array of elements about the axis of rotation causes a Doppler effect in signals received by the radiating element or array of elements. An artillery fuse incorporating the radio direction finding antenna is also disclosed.

REFERENCES:
patent: 3144646 (1964-08-01), Breithaupt
patent: 4037540 (1977-07-01), Keydel
patent: 6020854 (2000-02-01), Jagnow et al.
patent: 7336234 (2008-02-01), Taguchi et al.
“Low Cost Competent Munitions” [online], [retrieved on Jul. 24, 2006]. Retrieved from the Internet: <URL:http://www.globalsecurity.org/military/systems/munitions/cm-gps.htm>.

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