Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1993-02-04
1994-02-22
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342373, H01Q 302, H01Q 322
Patent
active
052891933
ABSTRACT:
The invention relates to a reconfigurable transmission antenna comprising a reflector (10) for energy focussing, and an array (11) of source elements situated in the focal region of the reflector, so that the electromagnetic field is synthesized in said region, wherein a spot (SPi) is the result of radiation from a number of sources that is fixed and identical for all the spots; any one source participating at any one time in radiating one spot at the most, and high-level switching being used to reconfigure the spots by selecting the sources that participate in a given spot. Application to the space telecommunications field in particular.
REFERENCES:
patent: 4286267 (1981-08-01), Schwierz
patent: 4553146 (1985-11-01), Butler
patent: 4901085 (1990-02-01), Spring et al.
patent: 4965587 (1990-10-01), Lenormand et al.
patent: 4965588 (1990-10-01), Lenormand et al.
patent: 5115248 (1992-05-01), Roederer
Electronic Engineering vol. 61, No. 748, Apr. 1989, pp. S22-S27, Woolwich, London, GB; F. Rispoli: "Reconfigurable satellite antennas: a review".
Lenormand Regis
Rene Didier
Rigal Christian
Alcatel Espace
Issing Gregory C.
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