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Interpolation And FFT Of Near-Field Antenna MeasurementsBivariate Lagrange interpolation applied to plane-polar measurement scans. Report discusses recent advances in application of fast-Fourier-transform (FFT) techniques to measurements of near radiation fields of antennas on plane-polar grid. Attention focused mainly on use of such measurements to calculate far radiation fields. Also discussion of use of FFT's in holographic diagnosis of distortions of antenna reflectors. Advantage of scheme, it speeds calculations because it requires fewer data and manipulations of data than other schemes used for this purpose.
Document ID
19900000060
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Gatti, Mark S.
(Caltech)
Rahmat-Samii, Yahya
(Caltech)
Date Acquired
August 14, 2013
Publication Date
February 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 2
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-17597
Accession Number
90B10060
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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