| 摘要 |
PROBLEM TO BE SOLVED: To improve detection accuracy of an interference wave by decreasing noise power observed in a bandwidth of a reception signal.SOLUTION: An antenna device includes: an analog beam formation part for forming a plurality of beam signals by synthesizing reception signals on radio frequency band; an analog stage interference suppression part for outputting a synthesized signal of a beam signal for interference wave suppression, whose amplitude and phase are adjusted with a first excitation weight, and a beam signal for communication, and for outputting a beam signal for interference wave suppression; a wave dividing filter bank for dividing a plurality of beam signals, which are converted into digital signals, to a plurality of sub-channel signals in a predetermined frequency division unit; a digital stage interference suppression part for synthesizing a digital signal in which the beam signal for communication is divided into a predetermined frequency division unit by adjusting amplitude and phase of the plurality of sub-channel signals with a second excitation weight; a wave synthesis filter bank for outputting a beam signal for communication by synthesizing bands of the synthesized digital signals; and an interference suppression control part for exciting weight. |
