Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2008-04-01
2008-04-01
Summons, Barbara (Department: 2817)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C333S193000, C333S176000, C341S143000, C331S154000
Reexamination Certificate
active
11492704
ABSTRACT:
A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
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Liw Sean Ian Saxon
Sun Wai Hoong
Wang Xiaofeng
Wang Zhe
Xu Yong Ping
Berkeley Law and Technology Group LLP
Summons Barbara
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