Antenna with single or double reflectors, with shaped beams and linear polarisation
First Claim
Patent Images
1. An antenna comprising:
- a reconfigurable multimode microwave beam forming network (BFN);
a concave reflector separated from said BFN and providing a shaped beam;
plural rectangular/square feed horn antennas that are arranged in a cluster, connected to said BFN, and aligned to illuminate said reflector to form the shaped beam;
means for exciting said antennas in the fundamental mode and in the fundamental mode plus higher modes; and
at least one rotatable polarizer between said feed horn antennas and said reflector and rotating an electric field so that the direction of the electric field is parallel to a direction of alignment of said feed horn antennas and independent of the antenna'"'"'s final polarization.
5 Assignments
0 Petitions
Accused Products
Abstract
Shaped beam antenna, with single or double reflector, gridded or non-gridded, the shaped beams, which can rotate the polarisation, independent of the polarisation of the feed cluster, for use preferably aboard satellites and in micro-wave antennas. The antenna includes a reflector (1), one or more polarisers (2), (2a), one or more feed clusters (3), (3a) , microwave circuits (4), (4a) to set-up the BFN, input port (5), (5a), and connections (C) and (C1).
-
Citations
2 Claims
-
1. An antenna comprising:
-
a reconfigurable multimode microwave beam forming network (BFN); a concave reflector separated from said BFN and providing a shaped beam; plural rectangular/square feed horn antennas that are arranged in a cluster, connected to said BFN, and aligned to illuminate said reflector to form the shaped beam; means for exciting said antennas in the fundamental mode and in the fundamental mode plus higher modes; and at least one rotatable polarizer between said feed horn antennas and said reflector and rotating an electric field so that the direction of the electric field is parallel to a direction of alignment of said feed horn antennas and independent of the antenna'"'"'s final polarization. - View Dependent Claims (2)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeSpace Engineering S.p.A. (Airbus SE), Finmeccanica-Societa Per Azioni
-
Original AssigneeSpace Engineering S.p.A. (Airbus SE), Finmeccanica SPA
-
InventorsLo Forti, Raimondo, Ruggerini, Gianfranco, Capece, Pasquale
-
Primary Examiner(s)Wong, Don
-
Assistant Examiner(s)NGUYEN, HOANG V
-
Application NumberUS08/815,666Time in Patent Office988 DaysField of Search343/756, 343/753, 343/840, 343/700 MS, 343/915, 343/779, 342/373US Class Current343/756CPC Class CodesH01Q 15/242 Polarisation convertersH01Q 19/17 the primary radiating sourc...H01Q 21/245 provided with means for var...
