Antenna system and method for operating an antenna system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 27, 2001
Grant Date -
N/A
app pub date -
May 19, 2000
filing date -
Nov 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to an antenna installation with an omni-directional antenna (M) and with an auxiliary antenna (A1) the reception signals from which can be combined in respect of amplitude and phase in such a way that a reception miniumu is produced in a desired orientation in space. A further auxiliary antenna (A2) is arranged and can be coupled in such a way that at least one reception minimum is produced where exactly one reception minimum points in the said desired direction in space and coincides with the said reception minimum produced by the first mentioned auxiliary antenna in respect of its orientation and where the attenuations to the reception minimum produced by the first mentioned auxiliary antenna and to the reception minimum produced by at least one of the further auxiliary antennae so that they do not of themselves inhibit the reception of a transmitter sending at a predetermined minimum level, and that the reception minima which coincide in their orientation jointly effect a greater attenuation so that they are suitable for the suppression of jammers. A very narrow reception minimum is produced. In other areas, satellite signals can be received.
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