| 摘要 |
In one embodiment, an active array antenna device includes: M (M‰§2) receiving filters configured to allow part of received signals, within a certain band, received by M antenna elements to pass therethrough; 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 into N (N‰§2) distributed signals; M sets of N phase shifters, each set provided for one of the M distributors and configured to shift phases of the N distributed signals; M sets of N attenuators, each set configured to attenuate N phase-shift signals; N beam synthesis circuits provided for N sets of the M attenuators and each configured to synthesize a beam by adding up attenuator outputs from the M attenuators corresponding to the M distributors; a heat insulating container configured to accommodate the low noise amplifiers and the receiving filters formed of a superconductor material; and a cooler configured to cool the receiving filters and the low noise amplifiers to make the receiving filters in a superconducting state. |
