An indirect holographic method for determining antenna radiation patterns and imaging antenna fields

D. Smith*, M. Leach, A. Sambell

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

25 Citations (Scopus)


This work describes a new technique for the determination of antenna radiation patterns and the imaging of antenna aperture fields. It uses an indirect holographic method to record simple intensity patterns formed by a combination of antenna near field signal and an offset reference signal and is similar to methods employed at optical frequencies. This is as an alternative to the traditional direct holographic method of measuring complex amplitude and phase values. It outlines how previous practical difficulties, which have prevented this method being usefully employed at microwave frequencies, can be overcome by the synthesis of an offset reference plane wave. It describes how far field antenna radiation patterns can be obtained from knowledge of the resultant intensity pattern and how the information contained within this pattern can be further processed to provide images of the antenna aperture fields. It includes the results of mathematical simulations which strongly support the ideas outlined. Currently an experimental system is being assembled to provide practical measurements. It is envisaged that preliminary experimental results will be available shortly.

Original languageEnglish
Pages (from-to)706-709
Number of pages4
JournalIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Publication statusPublished - 2002
Externally publishedYes
Event2002 IEEE Antennas and Propagation Society International Symposium - San Antonio, TX, United States
Duration: 16 Jun 200221 Jun 2002

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