Grating lobe suppression in aperiodic phased array antennas composed of periodic subarrays with large element spacing

Yury V. Krivosheev, Alexander V. Shishlov, Vladimir V. Denisenko

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The techniques of grating lobe (GL) suppression in planar phased array antennas composed of periodic subarrays with rectangular or triangular grids with large element spacing are considered. GL suppression is achieved using an aperiodic arrangement of subarrays. This approach provides a means to decrease GLs without a significant increase in structural complexity relative to periodic arrays; moreover, other antenna parameters do not essentially change compared with periodic arrays. Estimations of maximum GL suppression are presented. Antenna characteristics such as sidelobe level, beam efficiency, and aperture efficiency are also considered. The influences of element radiation pattern and amplitude tapering are analyzed. Examples of radiation patterns of such phased arrays are given.

Original languageEnglish
Article number7054481
Pages (from-to)76-85
Number of pages10
JournalIEEE Antennas and Propagation Magazine
Volume57
Issue number1
DOIs
Publication statusPublished - 1 Feb 2015
Externally publishedYes

Keywords

  • Aperiodic arrays
  • grating lobe (GL) suppression
  • periodic subarrays
  • phased arrays
  • unequally spaced subarrays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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