Title:
SYSTEM AND METHOD FOR IMPLEMENTING LOW-COST ELECTRONIC GYROSCOPES AND ACCELEROMETER
Document Type and Number:
WIPO Patent Application WO/2011/056908
Kind Code:
A3
Abstract:
A disclosed gyroscope or accelerometer apparatus is integrated into an integrated circuit chip. The apparatus has phase locked loops (PLLs) (210, 212) formed on a substrate that generate a signal having a wavelength that is less than 10mm and greater than l00μm. The PLLs are coupled to propagation paths (202, 204) formed on the substrate with coupled sections of larger and smaller similar (e.g., circular or triangular) nested shapes. Detection circuitry (such as phase detector 218) is coupled between the different paths, with the size of path sections selected such that, when the apparatus is at rest, output signals from corresponding propagation path sections are substantially in phase.
Inventors:
HUNG CHIH-MING (US)
CORSI MARCO (US)
CORSI MARCO (US)
Application Number:
PCT/US2010/055350
Publication Date:
August 18, 2011
Filing Date:
November 04, 2010
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
HUNG CHIH-MING (US)
CORSI MARCO (US)
TEXAS INSTRUMENTS JAPAN (JP)
HUNG CHIH-MING (US)
CORSI MARCO (US)
TEXAS INSTRUMENTS JAPAN (JP)
International Classes:
G01C19/66; G01C19/60; G01C19/62; G01P9/00
Domestic Patent References:
| WO2004008071A1 | 2004-01-22 |
Foreign References:
| US6934665B2 | 2005-08-23 | |||
| US6912475B2 | 2005-06-28 | |||
| US6672159B2 | 2004-01-06 |
Attorney, Agent or Firm:
FRANZ, Warren, L. et al. (Deputy General Patent CounselP.O. Box 655474, Mail Station 399, Dallas TX, US)
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