Improvement of Global Performances of Band-Pass Filters using Non-Conventionnal Stepped Impedance Resonators

In this paper, we propose the use of non-conventionnal stepped impedance resonators to built high performance band-pass filters. Particularly, we show that it is possible to improve the control of spurious responses outside of a selected bandwidth over a very large frequency range. New specific synthesis methods are developed to design such filters. Practical investigations are carried out in order to validate the method Furthermore, the proposed method is potentially attractive in various domains, like future multi-standard mobile systems (GSM/DECT) or millimeterwave local communication systems.