Accession Number : ADD011680

Title :   Dual Sense, Circularly Polarized Helical Antenna.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Coleman,H P

Report Date : 15 Jan 1985

Pagination or Media Count : 7

Abstract : Document describes a helical antenna for radiating waves in both orthogonal states of circular polarization that is fed at the base by a first feed and at the tip by a second feed. The amplitude and phase of the signal from the first feed controls the amplitude and phase of the wave in the first orthogonal polarization while the amplitude and phase of the second signal from the second feed independently controls the amplitude and phase of the wave in the second polarization state. Radiated waves of any arbitrary polarization state are formed by adjusting the amplitude and phase of the feed signal. Alternative embodiments are disclosed and claimed. (Author)

Descriptors :   *PATENTS, *HELICAL ANTENNAS, *PHASED ARRAYS, HORN ANTENNAS, CIRCULAR, ORTHOGONALITY, FEEDING, WAVES, POLARIZATION, SIGNALS, CONTROL, RADIATION

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE