Elliptic baw resonator filter and method of making the same

Details Elliptic baw resonator filter and method of making the same Elliptic baw resonator filter and method of making the same

1996-08-23

1998-06-02

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333189, H03H 956, H03H 960

Patent

active

057606633

ABSTRACT:
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.

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