Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1980-09-10
1982-10-05
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 18B, H01Q 1700
Patent
active
043530699
ABSTRACT:
An absorptive coating for reduction of the reflective cross section of a metallic surface is provided which includes a layer of "N" doped material adjacent the metal surface, the N doped material having a characteristic of increasing semiconductor conductivity from the outboard surface junction of the material to the boundary of the metallic surface, a second layer of "P" doped material having a characteristic of increasing semiconductor conductivity from its outboard surface boundary to its junction with the N doped material inboard of it. In the preferred embodiment, a third layer of P material is placed outboard of the second layer. The first and second layers further have electrical connections operatively associated with them, so that an applied voltage may be utilized to vary the electrical characteristics of the coating.
REFERENCES:
T.R.E. Report No. T. 1905, m/gg, Jul. 23, 1945, Declassified 2/14/60, "Radar Camouflage, Research & Development by the Germans", reproduced by the Armed Services Technical Information Agency, ATI 129880, G. G. Macfarlane, pp. 1-26.
"The Schornsteinfeyer Project", Technical Report No. 90-45, May 1945, declassifed 2/19/60, pp. 16-21.
Handel Peter H.
Honickman Stephen N.
Jungman James A.
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