Finite-difference time-domain analysis of HF antennas on helicopter airframes

William V. Andrew, Constantine Balanis, Panayiotis A. Tirkas, Jian Peng, Craig R. Birtcher

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


In this paper, the finite-difference time-domain (FDTD) method with the Berenger perfectly matched layer (PML) absorbing boundary condition (ABC) is used to model the radiation characteristics of high frequency (HF) antennas operating in the 2-30 MHz range on a full-scale helicopter. The computed input impedance of both antennas is compared with actual measurements from an operational full-scale helicopter and also with measurements on a scale model NASA generic advanced attack helicopter (GAAH). To study the coupling effects of the helicopter fuselage on the antenna systems, the S-parameters are computed and compared with measurements on the NASA GAAH scale model. Finally, computed gain patterns are compared with actual in-flight measurements of the antenna systems on an operational full-scale helicopter.

Original languageEnglish (US)
Pages (from-to)100-113
Number of pages14
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number2
StatePublished - 1997

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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