BROADBAND DUAL POLARIZED MATERIAL TEST SYSTEM

摘要

The S parameter measurement of large sheet materials has been limited to microwave frequencies due to a lack of test apparatus that could properly illuminate the materials with a uniform electromagnetic wave in a confined space at lower frequencies. Boeing Mesa has developed a unique test system that overcomes this limitation. The current design will perform S_(11) and S_(12) measurements from 0.125 to 40 GHz in five bands. Sample sizes up to 4 ft. wide, 8+ ft. long, and 12 inches thick, can be tested in sections by sliding the sample into the test fixture. Apertures up to 46 inches square can be provided in the aperture plate. The angle of incidence can be adjusted from 0 degrees to 45 degrees. Key words: Absorbing materials; Material measurement systems; RAM; S- parameters.