Study of Backfire Antennas

G. S. Kirov

Abstract


The study presented in this article is dedicated to the backfire disk-on-rod antennas fed by a dipole or crossed dipole. For short, these are herein called backfire antennas. Backfire antenna constructions with different configurations of the big reflector are considered. The influence of the feed location in the backfire antenna construction upon the antenna characteristics is also examined. The studies were carried out with a corrugated-rod (disks attached to a metal rod) surface-wave structure. The results obtained may be applied to other types of surface-wave structures, such as dipole array, dielectric rod or dielectric-covered metal rod. The lengths of the investigated antennas ranged between 2λ and 4λ. The design carried out in these investigations may be used for creation of high efficiency backfire antennas.

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References


H.W. Ehrenspeck, Reflection antenna employing multiple director elements and multiple reflection of energy to effect increased gain, US Patent No. 3,122,745, Febr. 1964, (Filed May 1959).

H.W. Ehrenspeck, "The backfire antenna, a new type of directional line source``, Proc. IRE, vol. 48, No. 1, pp. 109- 110, 1960.

H.W. Ehrenspeck,, "The backfire antenna: new results``. Proc. IEEE, vol. 53, No. 6, pp. 639-641, 1965.

F.J. Zucker, "The backfire antenna: a qualitative approach to its design``, Proc. IEEE, vol. 53, No. 7, pp. 746-747, 1965.

J.A. Strom, A dielectric-rod backfire antenna, AFCRL Report 69-0347, August 1969.

H.D. Hristov, Study of backfire antennas with surface-wave structures, Ph.D. Thesis, Sofia, 1973 (In Bulgarian).

A. Kumar, "Theoretical analysis of a long backfire antenna containing a dielectric structure``, Microwaves,Opt., and Acoust., vol. 2, No. 3, pp. 91-95, 1978.

G.S. Kirov, H.D. Hristov, "Physical radiation mechanism of a backfire antenna``, Nat. Scient. Techn. Conf. "Radar and Radio Relay Lines``, Varna, Dig., p.6, Oct. 1980 (In Bulgarian).

H.D. Hristov, Resonator-Type Antennas, D.Sc. Thesis, Sofia, 1987 (In Bulgarian).

A. Kumar, H.D. Hristov, Microwave Cavity Antennas, Artech House, Boston. London, 1989.

W.W. Hansen, J.R. Woodyard, "A new principle in directional antenna design``, Proc. IRE, vol. 26, No. 3, pp.333- 345, 1938.

R.C. Jonson, Antenna Engineering Handbook, Third Edition, McGraw-Hill, Inc., 1993.

H.W. Ehrenspeck, H. Poehler, A new method for obtaining maximum gain from Yagi antennas, AFCRC Techn. Rept. No TR-58-355, August 1956.

H. Bach, "Applicability of Hansen-Woodyard condition``, Proc. IEE, vol. 119, No. 1, pp. 38-40, January 1972.

C.A. Balanis, Antenna Theory: Analysis and Design, 3rd edition, Wiley, 2005.

T.A. Milligan, Modern Antenna Design, 2nd edition, John Wiley & Sons, Inc., 2005.

J.L. Volakis, Antenna Engineering Handbook, McGraw-Hill, 2007.

L. Thourel, Les Antennes, Deuxième edition, Dunod, Paris, 1971.




DOI: http://dx.doi.org/10.1590/S2179-10742011000100001

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