Accession Number:

AD0005694

Title:

MEASUREMENT OF THE EFFECTIVE GAIN OF A RESONANT SLOT

Descriptive Note:

Corporate Author:

NORTHEASTERN UNIV BOSTON MA ELECTRONICS RESEARCH LAB

Personal Author(s):

Report Date:

1953-02-10

Pagination or Media Count:

46.0

Abstract:

Research was conducted which indicates the agreement that can b e expected between theoretical predictions and several sets of carefully made experimental measurements. The estimated error in the experimental value of gain assigned to a thin lambda2 resonant slot in a ground plane was or - 0.3 db, and the assigned value of gain differed by less than 0.1 db from the theoretical value. The estimated error in gain assigned to a wave guide opening into a ground plane was or - 0.5 db, and the assigned value differed from the theoretical value by less than 0.1 db. The amplitude of the periodic variation in received power caused by multiple scattering was considerably reduced by the use of absorbing cloth on the metallic parts behind the receiving horn. The results indicated the necessity for an averaging procedure to eliminate the effects of multiple scattering.

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE