Rotor-blade modulation on antenna amplitude pattern and polarization: Predictions and measurements

Craig R. Birtcher, Constantine Balanis, Dennis DeCarlo

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The rotation of lift- and thrust-generating airfoils causes a periodic variation in aircraft communication signals. This effect is called rotor-blade modulation (RBM). The RBM on the radiation characteristics of helicopter-mounted antennas are predicted using the uniform theory of diffraction (UTD) and the finite-difference time-domain (FDTD) method and are compared with scale mode measurements and full-scale in-flight measurements. In addition, the effects of electric field polarization on RBM are studied using the FDTD.

Original languageEnglish (US)
Pages (from-to)384-393
Number of pages10
JournalIEEE Transactions on Electromagnetic Compatibility
Volume41
Issue number4 PART 1
DOIs
StatePublished - 1999

Fingerprint

rotor blades
Turbomachine blades
antennas
Rotors
Modulation
Polarization
Antennas
modulation
aircraft communication
Aircraft communication
polarization
predictions
helicopters
airfoils
Finite difference time domain method
Airfoils
finite difference time domain method
Helicopters
thrust
periodic variations

Keywords

  • Measurements
  • Predictions
  • Radiation patterns
  • Rotor blade modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Rotor-blade modulation on antenna amplitude pattern and polarization : Predictions and measurements. / Birtcher, Craig R.; Balanis, Constantine; DeCarlo, Dennis.

In: IEEE Transactions on Electromagnetic Compatibility, Vol. 41, No. 4 PART 1, 1999, p. 384-393.

Research output: Contribution to journalArticle

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