Patent · US Expired

Method for computer-assisted iterative determination of the transient response of a quartz resonator circuit

US5787004A · kind A · utility

6Cited by

9References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Christof Schmidt-Kreusel · Duisburg, DE
Qinghua Zheng · San Jose, US
Joerg Feldmann · Aachen, DE

Key dates

Filing date	Jan 22, 1997
Grant date	Jul 28, 1998
Priority date	—
Expiry date	Jan 22, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG06F30/367
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In the method, following an operating point determination of the quartz resonator circuit, a substitution of the equivalent circuit diagram of the quartz resonator by an independent current source is implemented with the initial, previously determined amplitude of the current of the dynamic arm of the quartz resonator. The dynamic equilibrium state is determined for this circuit arrangement with firing methods or methods of harmonic balance. After a resubstitution of the current source by the equivalent circuit diagram of the quartz resonator, a transient analysis is implemented for the dynamic equilibrium state. This method is iteratively implemented as long as the identified growth rate lies above a prescribable barrier.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.