Radiation efficiency and input impedance of monopole elements with radial-wire ground planes in proximity to Earth

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Radiation efficiency and input impedance of monopole elements with radial-wire ground planes in proximity to Earth

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Plots are presented of the radial efficiency and input impedance of a thin quarter-wave monopole element with a radialwire ground plane in proximity to flat lossy Earth, as a function of the number and length of the radial wires. Numerical results are from the method-of-moments NEC-GS program developed by Lawrence Livermore National Laboratory.

Inspec keywords: antenna earths; antennas; antenna theory

Other keywords: Lawrence Livermore National Laboratory; input impedance; flat lossy Earth; thin quarter-wave monopole element; proximity to earth; loss ground; numerical results; radiation efficiency; radial-wire ground planes; radial wires number; method-of-moments; modelling; radial wires length

Subjects: Antenna theory; Antenna accessories; Single antennas

References

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      • Burke, G.J.: `User's guide supplement for NEC-GS', Report UCRL-MA-107572, 1991.
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      • G.J. Burke . User's guide monopoles on radial-wire ground planes. Applied Computational Electronics Newsletter , 1
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      • Weiner, M.M., Zamoscianyk, S.: `Radiation efficiency and input impedance of monopole elements with radial-wire ground planes in proximity to Earth', M91-104, 1991, Bedford, MA, The MITRE Corporation, (also available from National Technical Information Service as AD-A244578).
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      • G.J. Burke , E.K. Miller . Modeling antennas near to and penetrating a lossy interface. IEEE Trans. , 1040 - 1049
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      • Burke, G.J., Miller, E.K.: `Numerical modeling of monopoles on radial-wire ground screens', Proc. 1989 IEEE Antennas and Propagation Society Symp., San Jose, CA, 1, p. 244–247.
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      • Burke, G.J., Poggio, A.J.: `Numerical electromagnetics code (NEC)—method of moments', Report UCID18834, 1981.
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      • Burke, G.J.: `User's guide supplement for NEC-3 for modeling buried wires', Report UCID-19918, 1983.
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      • Weiner, M.M.: `Input impedance and gain of monopole elements with disk ground planes on flat Earth', NTIS AD-A224284, M90-92, Proceedings Progress in Electromagnetics Research Symposium PIERS 1991, Bedford, MA, The MITRE Corporation.
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      • Weiner, M.M.: `Performance of ground-based high-frequency receiving arrays with electrically-small ground planes', MTR-11277, 1991, Bedford, MA, The MITRE Corporation.
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      • : `Proceedings', Progress in Electromagnetic Research Symposium PIERS 1991, Cambridge, MA, p. 691.
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