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Antennas and RF technologies


From concepts to products

We develop antennas, antenna arrays, components, circuits, modules and sub-systems for radio frequency communication and sensing applications. We collaborate with our customers from early phase concept research and development to final product optimisations. We have strong design skills with deep understanding of implementation technologies, from in-house manufacturing technologies to commercial semiconductor foundries and module manufacturers. In addition to the 'design and implementation' type of research, we provide antenna and component characterisation services from DC to 300 GHz.

Our tunable and reconfigurable antenna and RF solutions

Tunability and reconfiguration in radios has been an important research topic in consumer-related handset product, infrastructure and professional radios. Our solutions have applied tunability and reconfiguration to antennas, antenna arrays, amplifiers, filters and matching circuits. Our expertise covers component, circuit and module designs, as well as tuning technologies including but not limited to transistors (Silicon-on-Sapphire (SoS), CMOS, GaAs, SiGe, …), diodes, ferroelectric varactors and RF MicroElectroMechanical Systems (RF MEMS). Typically, tunable components have a narrow, selective, operation frequency band that can be tuned over a wide frequency range. Examples of our research topics are tunable band and channel select handset antennas, tunable filters and amplifiers, as well as beam steering and forming antenna arrays. 

Millimetre wave radios from telecommunication radio links to radiometers for the space-based observatory

VTT has extensive background in millimetre wave components and sub-systems for various millimetre wave applications. Our background knowledge has been created mostly in space-related radiometer and component development projects. VTT also participates in the activities of the Millimetre Wave Laboratory of Finland – MilliLab, a joint laboratory run by VTT and Aalto University – as well as in an ESA external laboratory on millimetre wave technology. VTT's largest radiometer development project has been related to the European Space Agency's Planck mission whose purpose was to characterise radiation from the cosmic microwave background. A Finnish team, led by VTT MilliLab, was responsible for developing the mission's 70 GHz radiometers. 

Millimetre wave technology and knowledge background gained in space activities have been applied  to sensing applications, and in recent years especially to telecommunication. Both 60 GHz and E-band frequency bands are important in short-range, high-data-rate and 5G communication systems. VTT's key knowledge applied to the millimetre wave telecom sector lies in antennas, millimetre wave integrated circuits, modules, integration techniques and characterisation.