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US 3,938,157 AGranted
Rotatable radar antenna feed and receiver horn
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorOrville G. Brickey
Life of this patent
Estimating the term…
Abstract
A rotatable radar antenna feed and receiver horn having two summing ports d a difference port with a rotatable section having a plurality of susceptor pins to rotate the polarization of the transmitted and received electromagnetic energy to reduce or minimize clutter and to enhance a target.
Claims2
A monopulse radar antenna feed comprising:
- a radio frequency energy comparator having a first sum port, a difference port, and a second sum output means including a coupling probe, said comparator being supported on the radar antenna by a first sum waveguide and a difference waveguide coupled in alignment with said first sum port and said difference port, respectively;
- a cylindrical housing rotatably mounted to said comparator, and
- an enlarged susceptor pin and first and second smaller susceptor pins passing through diameters of said cylindrical housing, said susceptor pins being parallel with one another whereby linearly polarized energy radiated from said feed is rotated as said cylindrical housing is rotated.
Dependencies are inferred from the claim text.