A system for noninvasive measurement of glucose in blood. The system is based in a sensor of the invention. The user must lay its finger on said sensor, which is excited by means of a radiofrequency sweep generation. The responses of magnitude and phase as a function of the frequency of the reflected wave are measured by an amplitude and phase detector. Said magnitudes are acquired by two analog-to-digital converters of a microcontroller, which in turn has the ability of transmitting them to other devices such as for example a computer or a smart phone.
