A circularly polarized single-frequency multimode helical beam antenna

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9 Citations (Scopus)


© 1963-2012 IEEE. An antenna based on a TM coaxial resonant cavity with radiating annular slots on one face and excited by multiple open-ended TE mode coaxial resonators on the opposite face is shown to simultaneously radiate the corresponding circularly polarized helical beams modes over a single-frequency band with good isolation between modes. S-parameters are calculated for a transmit-receive configuration with the antennas separated by 10 wavelengths. The initial antenna concept was developed interactively using the conformal finite difference time domain method with a Titan-XP GPU.
Original languageEnglish
Article number8550756
Pages (from-to)1459-1466
JournalIEEE Transactions on Antennas and Propagation
Publication statusPublished - 1 Mar 2019


  • Conformal finite difference time domain (CFDTD)
  • GPU
  • helical beam antenna
  • orbital angular momentum (OAM)


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