Wideband array processing with constant beam pattern beyond the spatial sampling limit

Alireza Shapoury, Erchin Serpedin

Research output: Contribution to journalArticle


This paper first addresses the Direction of Arrival (DOA) ambiguity problem in Uniform Linear Arrays (ULAs) and then proposes a wideband implementation through narrowband operation for an aliased array. It is shown that by an appropriate design e.g., frequency band selection and separation, signal spectrum support, and multiples access, one can resolve the aliasing, while maintaining larger array element spacing. A frequency invariant beamformer is used to control a contact bandwidth among the frequency subbands. The algorithm takes an all-angle approach for DOA and transmitted data signal estimation. Finally, the stability of the methodology is justified and the collaborated by simulation results.

Original languageEnglish
Article number72971K
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2009
Externally publishedYes



  • Array antenna processing
  • Constant beamwidth transmission
  • Wideband communication

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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