Microstrip miniaturized loop-filters with high out-of-band rejection for future 3G mobile terminals

Yann Toutain , Jean-Philippe Coupez (1) , Christian Person

1 MO - Département Micro-Ondes

This paper deals about the implementation of miniaturized microstrip band-pass filters operating on a very narrow bandwidth. We propose an original synthesis for achieving high out-of-band rejection by means of a 2nd order resonant structure, for which transmission zeros are introduced through mutual coupling effects. Quite good performances are obtained regarding losses, size and spurious resonances for the proposed topology, which can be considered as a good solution for future mobile on-board equipments

Mots clés: Mobile radio; Poles and zeros; Bandpass filter; Microstrip resonator; Resonator filter; Microstrip filter; Telecommunication terminal

Domaines: Electronique

Yann Toutain, Jean-Philippe Coupez, Christian Person. Microstrip miniaturized loop-filters with high out-of-band rejection for future 3G mobile terminals. 2001 IEEE MTT-S International Microwave Symposium Digest, May 2001, Phoenix, United States. pp.1589-1592, ⟨10.1109/MWSYM.2001.967207⟩. ⟨hal-02359355⟩