To provide a receiving device using a DBF antenna capable of receiving a digital modulation signal whose symbol rate is high in a simple constitution.

A digital beam signal outputted from a DBF antenna part 1 is temporarily returned to an analog signal by D/A converters 21 and 22, and high frequency components are interrupted through LPF 31 and 32 so that analog reception waveform can be reproduced. Then, the analog reception waveform is sampled again so that the reception data can be demodulated. Thus, it is possible separate an arithmetic clock for beam formation from an operating clock for reception demodulation, and it is not necessary to feedback a clock reproduced by a demodulating part 5 to a digital signal processing part 11. Thus, it is possible to operate the digital signal processing part 11 by the absolute necessary clock, and to reduce any load on beam formation processing. Therefore, it is possible to receive the digital modulation signal whose symbol rate is high in a simple constitution.