Film bulk acoustic resonator filters with a coplanar waveguide

Details Film bulk acoustic resonator filters with a coplanar waveguide Film bulk acoustic resonator filters with a coplanar waveguide

2007-03-06

2007-03-06

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S192000

Reexamination Certificate

active

10380985

ABSTRACT:
Multiple thin film bulk acoustic resonators (10, 11) configured in series (10) and parallel (11) within a coplanar waveguide line structure provides a compact ladder filter. The resonators (10, 11) are formed over an opening (28) in a substrate (20) and connected to associated circuitry by one or more transmission lines formed on the substrate (20). The arrangement of the resonators (10, 11) between the ground and signal lines of a coplanar line structure provides a means of minimising the area of the filter. Embedding a ladder filter within the coplanar transmission line structure eliminates the need for wire bonds, thus simplifying fabrication. Embodiments for 2×2, and hither order filters are described.

REFERENCES:
patent: 5185589 (1993-02-01), Krishnaswamy et al.
patent: 5942958 (1999-08-01), Lakin
patent: 6051907 (2000-04-01), Ylilammi
patent: 6774746 (2004-08-01), Whatmore et al.
patent: 6977563 (2005-12-01), Komuro et al.
patent: 7046103 (2006-05-01), Whatmore et al.
patent: 2004/0150295 (2004-08-01), Komuro et al.
patent: 0 865 157 (1998-09-01), None
patent: 0 880 227 (1998-11-01), None
patent: 0 949 756 (1999-10-01), None

Affiliated with

Also associated with

Rating

Film bulk acoustic resonator filters with a coplanar waveguide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Film bulk acoustic resonator filters with a coplanar waveguide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film bulk acoustic resonator filters with a coplanar waveguide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3763793