Tunable discone antenna

Details Tunable discone antenna Tunable discone antenna

1988-05-06

1989-07-25

Hille, Rolf

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343773, 343830, 343846, 343861, H01Q 136, H01Q 1300

Patent

active

048518590

ABSTRACT:
A discone antenna has a conducting cone having an apex and a conducting disc with a disc feed conductor extending from its center. The conducting disc is mounted at the apex of the cone in spaced relation therewith such that the disc feed conductor extends down into the cone through the cone's apex. A coaxial connector is mounted within the cone at the apex of the cone and defines a tuning cavity therein. A tuning slug is received in the tuning cavity through the apex of the cone and is vertically adjustable within the tuning cavity to tune the antenna.

REFERENCES:
patent: 2541107 (1951-02-01), Selgin
patent: 2771605 (1956-11-01), Kirkman
patent: 3293646 (1966-12-01), Brueckman
patent: 3618107 (1971-11-01), Spanos
patent: 3641578 (1972-02-01), Spanos et al.
patent: 3671971 (1972-06-01), Goodbody
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patent: 3742510 (1973-06-01), Spanos
patent: 3787865 (1974-01-01), MacDowell et al.
patent: 4143377 (1979-03-01), Salvat et al.
patent: 4641317 (1987-02-01), Fullerton
J. J. Nail, "Designing Discone Antennas", Electronics, pp. 167-169 (Aug. 1953).
D. A. McNamara, D. E. Baker and L. Botha, "Some Design Considerations for Biconical Antennas," APS-6-1, IEEE, pp. 173-176 (1984).
Y. Lakshminarayana, Y. R. Kubba and M. E. Madhusudan, "A Wide Band Discone Antenna", Electro-Technology, pp. 57-59 (Mar.-Apr. 1971).
S. Gibilisco, "Discover the Discone", .THETA.For Radio Amateurs, pp. 17-20, May, 1985.
F. C. Judd, "Antennas Part 1", Practical Wireless, pp. 54-57 (Feb. 1983).
F. C. Judd, "Antennas Part 2", Practical Wireless, pp. 52-54 (Mar. 1983).
S. E. Parker, L. G. Robbins, and W. J. E. Edwards, "Composite Discage Antenna Developed for 2-To-30-MC/S Band", Research and Development Report, Aug. 8, 1967.
K. F. Woodman, "Dielectric-Clad Discone", Electronics Letters, pp. 264-265, vol. 13, No. 9, Apr. 28, 1977.
A. G. Kandoian, "Three New Antenna Types and Their Applications", Waves and Electrons, pp. 70-75, Feb. 1946.
T. E. White, "A Discone Antenna for 10 and 6 Meters and Lo-Band Public Service Monitoring", Amateur Radio, pp. 74-75, Jun. 1980.

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