Aly, Aly H.; El-Sharawy, Badawy; Beyer, Adalbert:
Multilayer tunable ferroelectric high-Q-filters
In: 12th MICROCOLL - Colloquium on Microwave Communications / Mediterranean Microwave Symposium (MMS 2007), May 14-16, Budapest, Hungary - Budapest, Hungary, 2007, S. 31 - 34
2007Buchaufsatz/Kapitel in SammelwerkElektrotechnik
Multilayer tunable ferroelectric high-Q-filters
Aly, Aly H.; El-Sharawy, Badawy; Beyer, AdalbertLSF


This paper presents novel multilayer tuneable high Q-filters based on hairpin resonators including ferroelectric materials. This configuration allows the miniaturization of these filters to a size that makes it suitable for chip & package integration and narrow band applications. The multilayer structure allows for high Q by supporting a dielectric mode instead of a conductor transmission line mode. Different configurations of band reject filters are presented to illustrate the benefits of the present design.