Exploiting rotational symmetry for the design of ultra-wideband planar phased array layouts

Micah D. Gregory, Frank A. Namin, Douglas H. Werner

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Two new phased array design techniques are introduced that utilize rotational symmetry to avoid grating lobes during scanning and over ultra-wide bandwidths. The first is an optimization method, which employs the covariance matrix adaptation evolutionary strategy to determine the best locations of elements inside a sector of a circle. The second technique uses standard periodic lattices inside the same circular sector. Although the segments themselves are internally periodic, the rotational symmetry of the full array eliminates the occurrence of grating lobes and is capable of generating antenna element layouts with useful ultra-wideband properties. These design techniques yield arrays with not only ultra-wideband characteristics, but properties that lend themselves to relatively straightforward modular construction, especially the semi-periodic variety.

Original languageEnglish (US)
Article number6310021
Pages (from-to)176-184
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Issue number1
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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