Active array antenna device
First Claim
1. An active array antenna device comprising:
- M (M≧
2) receiving filters configured to allow part of received signals received by M antenna elements or antenna sub-arrays to pass therethrough, the part being signals within a certain band;
M low noise amplifiers configured to amplify M received signals from the M receiving filters;
M distributors each configured to distribute a corresponding one of the M amplified signals amplified by the M low noise amplifiers into N (N≧
2) distributed signals;
M sets of N phase shifters, each set provided for the corresponding one of the distributors and configured to shift phases of the N distributed signals distributed by the distributor;
M sets of N attenuators, each set configured to attenuate N phase-shift signals from the N phase shifters;
N beam synthesis circuits provided respectively for M sets of the N attenuators, and each configured to synthesize a beam by adding up attenuator outputs that correspond to the M distributors and are outputted by the corresponding set of the M attenuators;
a heat insulating container configured to accommodate the receiving filters formed of a superconductor material and the low noise amplifiers;
a cooler configured to cool the receiving filters and the low noise amplifiers accommodated in the heat insulating container to make the receiving filters in a superconducting state; and
a cooling plate accommodated in the heat insulating container and cooled by the cooler, and on which is placed the receiving filters and the low noise amplifiers.
1 Assignment
0 Petitions
Accused Products
Abstract
In one embodiment, an active array antenna device includes: M (M≧2) bandpass filters to filter signals received by M antenna elements; M low noise amplifiers to amplify the filtered received signals; M distributors to distribute respective of the M amplified signals into N (N≧2) distributed signals; M sets of N phase shifters provided for respective of the M distributors to shift phases of the N distributed signals; M sets of N attenuators to attenuate N phase-shift signals; N beam synthesis circuits provided for N sets of the M attenuators to synthesize a beam by summing attenuator outputs from the M attenuators corresponding to the M distributors; a heat insulating container accommodating the low noise amplifiers and the receiving filters and formed of a superconductor material; and a cooler to cool the receiving filters and the low noise amplifiers to make the receiving filters in a superconducting state.
76 Citations
13 Claims
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1. An active array antenna device comprising:
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M (M≧
2) receiving filters configured to allow part of received signals received by M antenna elements or antenna sub-arrays to pass therethrough, the part being signals within a certain band;M low noise amplifiers configured to amplify M received signals from the M receiving filters; M distributors each configured to distribute a corresponding one of the M amplified signals amplified by the M low noise amplifiers into N (N≧
2) distributed signals;M sets of N phase shifters, each set provided for the corresponding one of the distributors and configured to shift phases of the N distributed signals distributed by the distributor; M sets of N attenuators, each set configured to attenuate N phase-shift signals from the N phase shifters; N beam synthesis circuits provided respectively for M sets of the N attenuators, and each configured to synthesize a beam by adding up attenuator outputs that correspond to the M distributors and are outputted by the corresponding set of the M attenuators; a heat insulating container configured to accommodate the receiving filters formed of a superconductor material and the low noise amplifiers; a cooler configured to cool the receiving filters and the low noise amplifiers accommodated in the heat insulating container to make the receiving filters in a superconducting state; and a cooling plate accommodated in the heat insulating container and cooled by the cooler, and on which is placed the receiving filters and the low noise amplifiers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An active array antenna device comprising:
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M (M≧
2) receiving filters configured to allow part of received signals received by M antenna elements or antenna sub-arrays to pass there through, the part being signals within a certain band;M low noise amplifiers configured to amplify M received signals from the M receiving filters; M distributors each configured to distribute a corresponding one of the M amplified signals amplified by the M low noise amplifiers into N (N≧
2) distributed signals;M sets of N phase shifters, each set provided for the corresponding one of the distributors and configured to shift phases of the N distributed signals distributed by the distributor; M sets of N attenuators, each set configured to attenuate N phase-shift signals from the N phase shifters; N beam synthesis circuits provided respectively for M sets of the N attenuators, and each configured to synthesize a beam by adding up attenuator outputs that correspond to the M distributors and are outputted by the corresponding set of the M attenuators; a heat insulating container configured to accommodate the receiving filters formed of a superconductor material and the low noise amplifiers; a cooler configured to cool the receiving filters and the low noise amplifiers accommodated in the heat insulating container to make the receiving filters in a superconducting state; and a cooling plate accommodated in the heat insulating container and cooled by the cooler, and on which is placed the receiving filters and the low noise amplifiers, wherein the M receiving filters and the M low noise amplifiers, are divided into groups including one or more pairs and are accommodated group by group in a plurality of the heat insulating containers.
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13. An active array antenna device comprising:
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M (M≧
2) receiving filters configured to allow part of received signals received by M antenna elements or antenna sub-arrays to pass there through, the part being signals within a certain band;M low noise amplifiers configured to amplify M received signals from the M receiving filters; M distributors each configured to distribute a corresponding one of the M amplified signals amplified by the M low noise amplifiers into N (N≧
2) distributed signals;M sets of N phase shifters, each set provided for the corresponding one of the distributors and configured to shift phases of the N distributed signals distributed by the distributor; M sets of N attenuators, each set configured to attenuate N phase-shift signals from the N phase shifters; N beam synthesis circuits provided respectively for M sets of the N attenuators, and each configured to synthesize a beam by adding up attenuator outputs that correspond to the M distributors and are outputted by the corresponding set of the M attenuators; a heat insulating container configured to accommodate the receiving filters formed of a superconductor material and the low noise amplifiers; a cooler configured to cool the receiving filters and the low noise amplifiers accommodated in the heat insulating container to make the receiving filters in a superconducting state; and a cooling plate accommodated in the heat insulating container, and on which is placed the receiving filters and the low noise amplifiers, and is cooled by the cooler, wherein some pairs of the M receiving filters and the M low noise amplifiers are divided into groups including one or more pairs and are accommodated group by group in a plurality of the heat insulating containers.
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Specification