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US 4,378,559 AGranted
Radar antenna system
AssigneeThe United States of America as represented by the Secretary of the Army
InventorOtto E. Rittenbach
Life of this patent
Estimating the term…
Abstract
An antenna beam switching system comprising three antennas whose apertures re disposed in a common plane and which, by means of selective shunting of one or more phase shifters associated with each of the antennas, allows for three dimensional beam switching in at least four directions in space.
Claims3
An antenna system comprising:
- three antenna elements centered in a common plane at three points defining a right triangle having two equal sides,
- a plurality of phase shifting means each disposed in respective feed lines between a common transceiver and a corresponding one of said antennas, one of said phase shifting means being fixed, and
- means for selectively shunting the other two of said phase shifting means to orient the axis of the composite radiation pattern of said antenna system along a selected one of four different three-dimensional positions in space, said other two phase shifting means each including a single phase shifter whose phase shift is twice that of said one phase shifting means.
Dependencies are inferred from the claim text.