Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2011-06-07
2011-06-07
Takaoka, Dean O (Department: 2817)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C333S192000
Reexamination Certificate
active
07956705
ABSTRACT:
The invention relates to a circuit operating with bulk acoustic waves with at least electroacoustic systems, each arranged in a branch (Z1, Z2, Z3, Z4), wherein each electroacoustic system comprises at least two series-connected resonators (R11, R12; R21, R22; R31, R32; R41, R42) in the respective branch, which are galvanically separated from one another and acoustically coupled to one another by means of a coupling system (K1, K2, K3, K4) arranged therebetween. The electroacoustic systems are acoustically coupled via their coupling system (K1, K2) and/or electrically coupled to one another.
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Meister Veit
Ruile Werner
Epcos AG
Fish & Richardson P.C.
Takaoka Dean O
LandOfFree
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