Researchers Develop Micro Temperature Sensors Driven by Radio Waves

Researchers at Eindhoven University of Science and Technology in the Netherlands have developed a wireless temperature sensor driven by millimeter-wavelength radio waves.

Hao Gao, a student at Howen University of Science and Technology, earned his Ph.D. earlier for discussing the development of the sensor, which weighs only 2 square millimeters and weighs 1.6 milligrams. The sensor is fabricated using a 65 nanometer CMOS manufacturing process.

In particular, Hao Gao has developed a wireless router to communicate with sensors. The sensor has an on-chip antenna that receives energy and information from millimeter-wave signals. The current version of the sensor has a range of 2.5 centimeters, but researchers hope to expand the range to 1 meter in a year.

The independent characteristics of the temperature sensor mean that it can be placed behind a gypsum board or contained in a mortar layer of concrete or paint.