Nearfield beamforming using radial reciprocity

Rodney A. Kennedy*, Darren B. Ward, Thushara D. Abhayapala

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    36 Citations (Scopus)

    Abstract

    We establish the asymptotic equivalence, up to complex conjugation, of two problems: 1) determining the nearfield performance of a farfield beampattern specification and 2) determining the equivalent farfield beampattern corresponding to a nearfield beampattern specification. Using this reciprocity relationship, we develop a computationally simple procedure to design a beamforming array to achieve a desired nearfield beampattern response. The superiority of this approach to existing methods, both in ease of design implementation and performance obtained, is analyzed and then illustrated by a design example.

    Original languageEnglish
    Pages (from-to)33-40
    Number of pages8
    JournalIEEE Transactions on Signal Processing
    Volume47
    Issue number1
    DOIs
    Publication statusPublished - 1999

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