The disposable set includes an infusion device having an outflow conduit and a needle. The multi-beam antenna comprises primary feeds 3 each of which is composed of a waveguide having an opening at the end and a dielectric body 6 disposed at the end, a hemispherical Luneberg radio wave lens, and a reflective plate attached to the circular opening of the hemispherical radio wave lens and adapted for reflecting a radio wave incoming from the sky or emitted toward a target. A polymer cap is operatively secured over the base forming a cavity. At least one vital signal is measured at least once if the amount of the motion is less than or equal to the threshold. Then, the apparatus compresses the first compressed data by k-bit units to generate second compressed data. A second adjuster adjusts an initial phase and an amplitude of the sine wave based on the plurality of luminance change amounts detected by the detector.