Generation of free space radiation patterns from non-anechoic measurements using chebyshev polynomials

Zhou Du, Jung Ick Moon, Soon Soo Oh, Jinhwan Koh, Tapan Kumar Sarkar

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Generally, antenna radiation patterns are measured in an anechoic condition so that the presence of undesired reflections does not skew the final measurements. The objective of this communication is to search for methodologies which can extract meaningful approximate results from non-anechoic measurements. In other words, how to process the reflection contaminated data and extract valuable information when one does not have a good anechoic room and performs measurements with various undesired reflections present in the data. The Chebyshev polynomials are used to extract from the data collected under non-anechoic environment and generate a radiation pattern for the same antenna radiating in free space conditions. The problem with this method is that some a priori information is required about the environment. Measured data has been used to illustrate the applicability of this new methodology and its improved performance over the FFT based methods.

Original languageEnglish (US)
Article number5471170
Pages (from-to)2785-2790
Number of pages6
JournalIEEE Transactions on Antennas and Propagation
Issue number8
StatePublished - Aug 2010


  • Antenna measurement
  • Chebyshev polynomial
  • FFT method
  • causality
  • matrix pencil method
  • pattern reconstruction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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