The invention investigated the multiple measured phase difference microwave for transmission waves using the target sample with different oscillation phase, and that by identifying the amplitude of the received reception passes through the measurement target sample wave measured to determine the water content in the measurement target sample It relates to a water content measuring method and apparatus using the multi-phase microwave.
In the present invention, the basic transmission wave (S1), the base transmission wave (S1) and consisting of a plurality of microwave phase oscillation transmitting wave (S2, S3) comprising: pass by irradiating the multi-phase micro measured transmitting wave target sample consisting of .; The method comprising the basic transmission wave (S1) and detects the received wave corresponding to each of a plurality of phase oscillation transmitting wave (S2, S3) measuring the amplitude (Es1, Es2, Es3); To obtain the average amplitude Em averaging the amplitude of the measured received wave phase; Obtaining a basic transmission wave (S1) a full amplitude Eo of the received incoming wave is irradiated to the sample in dry condition and the amplitude difference between the average amplitude value ΔEs Em; And a multi-phase water content measurement method using the microwaves and the water content measuring device characterized in that the measurement of the water content in the measurement target sample is provided to the proportional constant k of the matrix by multiplying the amplitude difference ΔEs.