Microstrip circular phased array design and development using microwave antenna CAD tools

Nemai C. Karmakar, Marek E. Bialkowski, Shantanu Kumar Padhi

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)


The complex design and development of a planar multilayer phased array antenna in microstrip technology can be simplified using two commercially available design tools 1) Ansoft Ensemble and 2) HP-EEsof Touchstone. In the approach presented here, Touchstone is used to design RF switches and phase shifters whose scattering parameters are incorporated in Ensemble simulations using its black box tool. Using this approach, Ensemble is able to fully analyze the performance of radiating and beamforming layers of a phased array prior to its manufacturing. This strategy is demonstrated in a design example of a 12-element linearly-polarized circular phased array operating at L band. A comparison between theoretical and experimental results of the array is demonstrated.

Original languageEnglish
Pages (from-to)944-953
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Issue number7
Publication statusPublished - 1 Jul 2002
Externally publishedYes


  • Array analysis
  • Beamforming networks
  • CAD tools
  • Microstrip antennas
  • P-I-N diodes
  • Phased arrays
  • Phased shifters
  • Switches

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