Low-loss reconfigurable reflector array antenna
First Claim
1. A reflector array antenna divided into independent subarrays each comprising:
- at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one chosen first polarization and secondly to send phase-shifted signals having at least one chosen second polarization orthogonal to the first polarization, combination means adapted to sum said collected signals as a function of a chosen first phase law so that they correspond to a chosen source pointing direction, phase control means adapted to apply a chosen phase shift to the summed signals, and distribution means adapted to distribute said phase-shifted signals between said radiating elements as a function of a chosen second phase law so that said radiating elements of each subarray radiate them in a pointing direction of a chosen area, in which antenna said combination means and said distribution means are separate so that said subarrays are of a nonreciprocal type.
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Abstract
A reflector array antenna is divided into independent subarrays each comprising at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one chosen first polarization and secondly to send phase-shifted signals having at least one chosen second polarization orthogonal to the first polarization. Each subarray sums the collected signals as a function of a chosen first phase law so that they correspond to a chosen source pointing direction, applies a chosen phase shift to the summed signals, and distributes the phase-shifted signals between the radiating elements as a function of a chosen second phase law so that the radiating elements of each subarray radiate them in a pointing direction of a chosen area. The combining and distribution are effected separately and the subarrays are therefore of a nonreciprocal type.
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Citations
19 Claims
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1. A reflector array antenna divided into independent subarrays each comprising:
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at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one chosen first polarization and secondly to send phase-shifted signals having at least one chosen second polarization orthogonal to the first polarization, combination means adapted to sum said collected signals as a function of a chosen first phase law so that they correspond to a chosen source pointing direction, phase control means adapted to apply a chosen phase shift to the summed signals, and distribution means adapted to distribute said phase-shifted signals between said radiating elements as a function of a chosen second phase law so that said radiating elements of each subarray radiate them in a pointing direction of a chosen area, in which antenna said combination means and said distribution means are separate so that said subarrays are of a nonreciprocal type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification