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Accession Number ADA571052
Title Truncation-Error Reduction in 2D Cylindrical/Spherical Near-Field Measurements.
Publication Date Mar 2010
Media Count 26p
Personal Author K. T. Kim
Abstract We introduce a near-field to far-field transformation for two-dimensional cylindrical/spherical 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.
Keywords Angular truncation errors
Antenna radiation patterns
Bistatic scattering
Expansion coefficients
Far field
Near field
Near-field transformation
Slepian functions
Spherical scanning
Two dimensional
Two-dimensional cylindrical scanning

Source Agency Non Paid ADAS
NTIS Subject Category 46H - Radiofrequency Waves
Corporate Author Air Force Research Lab., Hanscom AFB, MA. Sensors Directorate/Electromagnetics Technology Div.
Document Type Technical report
Title Note Final rept. 1 Oct 2008-30 Sep 2009.
NTIS Issue Number 1315
Contract Number N/A

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