Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2005-07-27
2008-10-28
Nguyen, Simon D (Department: 2618)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C455S307000, C455S339000, C333S193000
Reexamination Certificate
active
07443269
ABSTRACT:
An RF switching circuit that incorporates a film bulk acoustic resonator (FBAR) device and one or more capacitors that are used to vary the capacitance of the FBAR device to change the frequency range that is blocked by the FBAR device. When the RF switching circuit is in a first switching state, a first set of RF signals in a first frequency range is blocked by the RF switching circuit while RF signals of other frequencies are passed by the RF switching circuit. When the RF switching circuit is in a second switching state, a second set of RF signals in a second frequency range is blocked by the RF switching circuit while RF signals of other frequencies are passed by the RF switching circuit.
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Chee Chong Hin
Chow Yut Hoong
Ruby Richard C
Avago Technologies General IP ( Singapore) Pte. Ltd.
Nguyen Simon D
LandOfFree
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