Certain Considerations in Aperture Synthesis of Ultrawideband/Short-Pulse Radiation

Ehud Heyman, Timor Melamed

Research output: Contribution to journalArticlepeer-review

Abstract

We consider certain characteristics of the radiation from collimated, ultrawideband short-pulse aperture distributions. It is shown that an efficient radiation must account for the multifrequency nature of the field. Two alternative schemes for wideband aperture synthesis of an impulse-like radiation pattern are examined. The first, entitled the “Iso-width aperture,” utilizes only temporal shaping of the excitation pulse. In the other, the “Iso-diffracting aperture,” we suggest source shaping in spacetime so that all the frequency components in the field have the same collimation distance. The “iso-diffracting” scheme yields higher directivity and more efficient pulsed radiation. Explicit examples for the pulsed source distribution and for the pulsed radiation patterns are presented, parametrized, and contrasted.

Original languageEnglish
Pages (from-to)518-525
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Volume42
Issue number4
DOIs
StatePublished - Apr 1994

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