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Sensors and wireless devices

Research content and applications

We develop new sensors, components and measurement devices using electronics, microelectromechanics, quantum mechanics and radio-, millimetre- and submillimetre wave technologies. Our world-class expertise in sensor physics and electronics allows us to design novel sensors optimised in terms of sensitivity, signal-to-noise ratio, selectivity, stability, and cost. Research topics include: RFID and its sensor applications, printed sensors and memories, electrical sintering of metallic nanoparticles, terahertz and millimetre-wave imaging technologies and spectroscopy, coherent quantum systems, molecular sensors and their integrated readout circuits, RF MEMS technology in adaptive antennas and RF modules, the front end of 60 GHz radio, CMOS technology for millimetre waves, automotive radar technologies and their new applications. We develop antennas for many applications.

Future prospects

The need for sensors is growing in all industrial branches, traffic, logistics, trade, medicine, housing, fitness, welfare services, etc. The sensors must be not only technically good, but also cost effective. Wireless communication, low power consumption and autonomous functioning, possibly combined with an energy scavenging capability, are desired features. Wireless sensors can be localised and identified. The sensors make measurements and communicate.

Resources

About 80 scientists are doing research on sensors and wireless devices. We have modern simulation software (HFSS, IE3D, Aplac, Ansys), design tools (Mentor, Cadence, PADS), and laboratory apparatus, e.g. network and spectrum analysers, etc. The frequency range of the measurements extends up 110 GHz. In VTT and TKK’s joint laboratory, MilliLab, we can measure the noise figure of amplifiers up to 220 GHz, and characterise components (DC and S- parameters) on wafer up to 220 GHz. For antenna research we have measurement devices and anechoic chambers whose frequency range is 100 MHz – 200 GHz.


Additional information

Timo Varpula
Research Team Leader
+358 20 722 6418

Kaj Nummila
Principal Scientist
+358 20 722 5773

Heikki Seppä
Research Professor
+358 20 722 6419

Competences

Additional information

Timo Varpula
Research Team Leader
+358 20 722 6418

Kaj Nummila
Principal Scientist
+358 20 722 5773

Heikki Seppä
Research Professor
+358 20 722 6419