Bulk acoustic wave resonator filter

Details Bulk acoustic wave resonator filter Bulk acoustic wave resonator filter

2011-06-14

2011-06-14

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S190000, C310S322000

Reexamination Certificate

active

07961066

ABSTRACT:
The invention relates to a filter operating with bulk acoustic waves, comprising at least one first resonator and at least one second resonator. In the at least one first and second resonator, a longitudinal acoustic mode is capable of propagation, for which normal dispersion is adjusted in the first resonator and abnormal dispersion in the second resonator by selection of the material and the relative layer thicknesses. In particular, the power compatibility of the filter at the higher frequency edge of its passband can be improved.

REFERENCES:
patent: 6262637 (2001-07-01), Bradley et al.
patent: 6518860 (2003-02-01), Ella et al.
patent: 6587212 (2003-07-01), Barber et al.
patent: 6788170 (2004-09-01), Kaitila et al.
patent: 6933807 (2005-08-01), Marksteiner et al.
patent: 2004/0140869 (2004-07-01), Marksteiner et al.
patent: 102 41 425 (2004-03-01), None
patent: 1 221 770 (2002-07-01), None
patent: WO01/06646 (2001-01-01), None
patent: WO01/06647 (2001-01-01), None
Ruby et al.; “Acoustic FBAR for Filters, Duplexers and Front End Modules”; 2004 IEEE MTT-S International Microwave Symposium Digest, vol. 2, pp. 931-934, Jun. 6-11, 2004.
Reinhardt et al.; “Investigation of Spurious Resonances in Thin Film Bulk Acoustic Wave Resonators”; 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Joint 50th Anniversary Conference, vol. 3, pp. 1698-1701, Aug. 23-27, 2004.
Pensala et al.; “Laser Interferometric Measurement of Lamb Wave Dispersion and Extraction of Material Parameters in FBARs”; 2002 IEEE Ultrasonics Symposium Proceedings, vol. 1, pp. 977-980, Oct. 8-11,2002.
Fattinger et al.; “Laser Measurements and Simulations of FBAR Dispersion Relation”; 2001 IEEE MTT-S Microwave Symposium Digest, vol. 1, pp. 371-374, May 20-25, 2001.
Schmidhammer et al “Design Flow and Methodology on the Design of BAW Components”, IEEE Microwave Symposium, Jun. 12-17, 2005 pp. 233-236 XP010844730, ISBN 0780388461.
Lowe “Matrix Techniques for Modeling Ultrasonic Waves in Multilayered media”IEEE transaction on Ultrasonics, Jul. 1995, vol. 42, No. 4, pp. 525-542.
International Search Report for PCT/DE2006/002165 mailed May 2007.
Written Opinion for PCT/DE2006/002165 based on search report mailed May 2007.
English translation of Written Opinion for PCT/DE2006/002165 based on search report mailed May 2007.

Affiliated with

Also associated with

Rating

Bulk acoustic wave resonator filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bulk acoustic wave resonator filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bulk acoustic wave resonator filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2745170