Periodic surfaces for selectively modifying the properties of re

Details Periodic surfaces for selectively modifying the properties of re Periodic surfaces for selectively modifying the properties of re

1991-04-16

1997-02-25

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Antenna components

343753, H01Q 1502

Patent

active

056063350

ABSTRACT:
To reduce strong diffractive fields at the baseline edge of a metal body which is reflective of electromagnetic radiation, a substrate substantially transparent to the radiation is placed contiguous to that edge. Conductive reflective elements are carried on an exposed surface of the substrate, in a pattern such that reflection decreases and transparency increases from the baseline toward the terminal edge of the substrate. Thus the diffractive field is gradually reduced.

REFERENCES:
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patent: 4301456 (1981-11-01), Lovick, Jr.
patent: 4518967 (1985-05-01), Westerman
patent: 5357260 (1994-10-01), Roederer et al.
Yee et al., "Absorptive Sidelobe Filter", Conference: B521982 APS International Symposium Digest Antennas and Propagation Albaquerque MN, USA (24-28 May 1982), pp. 691-694.

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