Work as an RF System Engineer for Contactless communication is always related to antennas and specific challenges for the coupling system. For the introduction of Contactless Credit Cards, I served in the design of smaller card antennas, supported reference certifications at the lab FIME, or the specification of smaller antenna classes in ISO/IEC14443.
At the beginning of NFC and payment with mobile phones in 2011, we investigated many ferrite foils and I invented a type of contactless sticker which works nicely on metal surfaces.
As batteries are available in mobile phones, but the area for antennas is limited and the environment is not easy, together with colleagues and highly motivated students I contributed to new developments like active load modulation.
