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US 4,031,536 AGranted
Stacked arrays for broadcasting elliptically polarized waves
OwnerAndrew Alfordinventor
Life of this patent
Estimating the term…
Abstract
Improved performance of a stacked array of short helical elements is achieved by using average spacing between elements which is less than one wavelength. Still better performance is obtained by using as antenna elements structures comprising combinations of Z-shaped radiators.
Claims10
A radiating element comprising:
- a. Two substantially similar metal conductors each having a central portion and two end portions with the end of the central portion of one conductor located close to the end of the central portion of the other conductor,
- b. Said central portions arranged at an angle with each other in substantially the same plane,
- c. The end portions of each conductor pointing in opposite directions from the plane containing the central portions,
- d. The end portions of the two conductors at the proximate ends of the central portions pointing in opposite directions,
- e. Means for energizing the proximate ends of the central portions of the conductors at their proximate ends by radio frequency in opposite phases.
2 more elements
Dependencies are inferred from the claim text.