Accession Number:

ADA571052

Title:

Truncation-Error Reduction in 2D Cylindrical/Spherical Near-Field Measurements

Descriptive Note:

Final rept. 1 Oct 2008-30 Sep 2009

Corporate Author:

AIR FORCE RESEARCH LAB HANSCOM AFB MA SENSORS DIR/ELECTROMAGNETICS TECHNOLOGY DIV

Personal Author(s):

Report Date:

2010-03-01

Pagination or Media Count:

26.0

Abstract:

We introduce a near-field to far-field transformation for two-dimensional cylindricalspherical scanning that significantly reduces angular-truncation errors. After examining the limitations of the traditional multipole-based expansion of truncated scan data, we consider an alternative expansion based on Slepian functions and show how far-field values can be extracted from the resulting expansion coefficients. We compare the performance and computational cost of the new transformation with those of the traditional one.

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE