| 摘要 |
Disclosed are radar sectoral horn antennas of the rolled and folded parallel plate type having two internal reflectors which makes possible a more compact construction. The double fold or double reflector construction is applicable to sectoral horns having an f/d ratio greater than one and the reflectors may be straight or curved. The horns may be provided with a dielectric, geodesic or wave guide lens and by combining two orthogonally related antennas, three dimensional scanning is possible.
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