The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
Nov. 12, 2002
Yong Ping Xu, Singapore, SG;
Wai Hoong Sun, Singapore, SG;
Xiaofeng Wang, Henan Province, CN;
Zhe Wang, Singapore, SG;
Sean Ian Saxon Liw, Singapore, SG;
Yong Ping Xu, Singapore, SG;
Wai Hoong Sun, Singapore, SG;
Xiaofeng Wang, Henan Province, CN;
Zhe Wang, Singapore, SG;
Sean Ian Saxon Liw, Singapore, SG;
National University of Singapore, Singapore, SG;
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.