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  • Finite difference time domain modeling of spiral antennas [microform] / submitted by Christopher W. Penney, John H. Beggs and Raymond H. Luebbers.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • Spiral microstrip antenna with resistance [microform] / inventor, David G. Shively.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Simulation of thin slot spirals and dual circular patch antennas using the finite element method with mixed elements [microform] / J. Gong, J.L. Volakis and M.W. Nurnberger.

    • Text
    • Ann Arbor, Mich. : The University of Michigan ; Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • A new planar feed for slot spiral antennas [microform] / M.W. Nurnberger and J.L. Volakis.

    • Text
    • Ann Arbor, Mich. : University of Michigan, Radiation Laboratory, Dept. of Electrical Engineering and Computer Science ; [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • Analysis of elliptically polarized cavity backed antennas using a combined FEM/MoM/GTD technique [microform] / C.J. Reddy, M.D. Deshpande, D.T. Fralick.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • Annual progress report [microform].

    • Text
    • Ann Arbor, Mich. : University of Michigan, Radiation Laboratory, Dept. of Electrical Engineering and Computer Science ; [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

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