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1. MYPI 97003346 - ELLIPTIC FILTER AND METHOD OF MAKING THE SAME

Office
Malaisie
Numéro de la demande PI 97003346
Date de la demande 23.07.1997
Numéro de publication PI 97003346
Date de publication 23.02.1998
Type de publication A
Déposants MOTOROLA, INC.
Inventeurs BORTOLO MARIO PRADAL
Mandataires HARIRAM JAYARAM
Données relatives à la priorité 08701825 23.08.1996 US
Titre
(EN) ELLIPTIC FILTER AND METHOD OF MAKING THE SAME
Abrégé
(EN) AN ODD ORDER N-POLE, (N-1)/2 ZERO ELLIPTIC FILTER (300) IS PROVIDED HAVING (N-1)/2 BAW RESONATORS (302 AND 304). THE FIRST BULK ACOUSTIC WAVE (BAW) RESONATOR (302) OPERATES AT A FIRST MODE NUMBER AND A FIRST CENTER FREQUENCY AND THE SECOND BAW RESONATOR (304) OPERATES AT A SECOND MODE NUMBER, AND A FIRST CENTER FREQUENCY. OPERATING BAW RESONATORS (302 AND 304) AT DIFFERING MODES ALLOWS THE UNWANTED PASSBANDS (201) OF THE FIRST BAW RESONATOR (302) TO BE ATTENUATED BY THE STOPBAND OF THE SECOND BAW RESONATOR (304) AND VICE VERSA.@@(FIG. 1)