Accession Number : ADP007437

Title :   Transient Effects in Reflector Antennas,

Corporate Author : HANSEN (R C) INC TARZANA CA

Personal Author(s) : Hansen, R. C.

Report Date : FEB 1992

Pagination or Media Count : 19

Abstract : Reflector antenna transient times are investigated. The current build-up transient time, D2/16fc, is important off-axis, and is related to the pattern build-up transient time which varies with pattern angle. Both transient times vary with f/D, and increase directly with D/Lambda. The pattern transient time, during which the sidelobe structure is established, while zero on-axis, may be larger for large angles than the current transient time. These transient times must be considered in the design of wideband systems as they may affect signal fidelity at the edges of the main beam, and noise, clutter, and signal in the sidelobe region.

Descriptors :   *ANTENNAS, *SIGNALS, *TIME, ANGLES, CLUTTER, EDGES, NOISE, PATTERNS, REFLECTORS, REGIONS, SIDELOBES, STRUCTURES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE