The demodulator for simultaneous multi-node receiving and the method thereof

PURPOSE: A demodulator for simultaneous multi-node receiving and the method thereof is provided to reduce a reception time of a node by receiving a plurality of node signals. CONSTITUTION: A clock generating part(210) generates a pair of CW signals. The CW signals have the same frequency as a modulated radio frequency signal. First and second mixers(110,120) mix an RF signal and the CW signal from a node and output a mixed signal. The phase difference between the CW signals which is respectively inputted into the first mixer and the second mixer is 90°. First and second integrators(310,320) integrate the mixed signal at the mixer. A data calculation unit(410) stores the integrated signal in the first and second integrator. The data calculation unit calculates the change of an integrated signal at a certain period to determine output data.