Accession Number:

AD0259298

Title:

EVALUATION OF A HEMISPHERICAL ANECHOIC CHAMBER

Descriptive Note:

Corporate Author:

HRB-SINGER INC STATE COLLEGE PA

Personal Author(s):

Report Date:

1961-04-24

Pagination or Media Count:

41.0

Abstract:

An investigation was conducted to study the merits of a hemispherical anechoic chamber 150 ft in diameter, by making measurements on a model scaled by a factor of 112. This model was evaluated by a comparison of antenna patterns made within the chamber to patterns made on an outdoor test range. It was determined that the hemispherical geometry possesses unique difficulties which result in a performance of relatively low caliber. Other subjects related to this problem are also discussed, such as shielding, Fresnel and Fraunhofer regions, microwave absorption, and reciprocity within the chamber. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE