Communications: directive radio wave systems and devices (e.g. – Radio wave absorber
Patent
1988-07-06
1990-02-13
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Radio wave absorber
342 4, G01S 740
Patent
active
049010808
ABSTRACT:
A test subject is mounted in front of a radar antenna for measurement of a radar cross-sectional signature of the test subject. The test subject is mounted on an electrically conductive rotator mounted coplanar with an electrically conductive shield, there being a clearance space between the rotator and the shield to allow for rotation of the rotator. An electrically conductive seal is disposed in a shelf of the front surface of the shield in the manner of a fairing to provide a smooth surface of the shield which covers the clearance space for minimizing reflections of radiation, and for deflecting any reflections of radiation from the antenna away from the antenna. A rotator rotates the platform, and a tilt mechanism tilts the shield for variation in elevation angle. The foregoing apparatus is mounted within an anechoic chamber.
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Anderson Terry J.
Barron Jr. Gilberto
Block Robert B.
Northrop Corporation
Tarcza Thomas H.
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