Community Research and Development Information Service - CORDIS

Ferroelectric tuning of a dielectric resonator filter

A method for fast, electrical tuning of a dielectric resonator is proposed. The results verify its underlying principle. By using a ferroelectric element, fast resonant frequency tuning of a DR while maintaining a useful Q-factor is possible. This is because the coupling between the high Q DR and the low Q ferroelectric element (film) and can be sensitively balanced by altering the distance between the ferroelectric and the DR. This is achieved simply by adjusting the spacer height. Further improvements in the device are possible by using higher quality BSTO films prepared by alternative techniques.

Reported by

Imperial College London
Exhibition Road
SW7 2AZ London
United Kingdom
See on map
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top