| 摘要 |
An antenna device comprises: an element antenna (1) for receiving a signal; a phase control unit (3) for controlling the phase of the signal received by the element antenna (1); a phase value sequence acquisition unit (4) for acquiring a phase value sequence provided with phase values different between systems and varying with time; a phase value setting unit (5) for setting, on the basis of the phase value sequence, the phase values in the phase control unit (3); a combination unit (6) for combining phases-controlled signals; an ADC (7) for digitizing a combined signal; a frequency calculation unit (8) for calculating, from the phase value sequence, a frequency shift amount; a DDC (9) for frequency-converting, by use of the frequency shift amount, the digitized signal; an LPF (10) for low-pass-filtering a frequency-converted signal; and a beam formation unit (11) for forming a beam signal by use of a low-pass-filtered signal. |
