Electric wave type biosensor

An electric wave type biosensor comprising:

• an electromagnetic wave irradiation unit which irradiates a body surface of a living body with an electromagnetic wave;
• a reflected wave receiving unit which receives a reflected wave obtained as the electromagnetic wave irradiated by the electromagnetic wave irradiation unit and then reflected on the body surface, and obtains an I signal obtained by multiplying the irradiated electromagnetic wave signal and the received reflected signal, and a Q signal obtained by delaying the I signal only by a predetermined phase;
• a differentiation calculation unit which differentiates the I signal and the Q signal which are obtained by the reflected wave receiving unit, and calculates an I signal differential value and a Q signal differential value;
• and
• an angular velocity calculation unit which calculates an angular velocity of the I signal and the Q signal, based on the I signal and the Q signal which are obtained by the reflected wave receiving unit and the I signal differential value and the Q signal differential value which are calculated by the differentiation calculation unit based on the I signal and the Q signal.