Excitation signal generator for improved accuracy of model-based testing
AssigneeVerigy (Singapore) Pte. Ltd.
InventorsLeo Barford, Nicholas Tufillaro, Ajay Khoche
Life of this patent
Estimating the term…
Abstract
An excitation signal generator (“ESG”) is described. The ESG generates an minimized excitation signal for use in a test system to generate a functional model of a device under test (“DUT”) where extreme values of the minimized excitation signal are increased toward a central value without changing the power spectrum at the DUT.
Claims20
A method for generation of a minimized excitation signal with an associated power spectrum, the method comprising:
- determining a frequency range of a system under test (“SUT”);
- identifying a number of frequency lines to be in the minimized excitation signal;
- computing a set of frequency lines based on the frequency range of the SLIT and the number of frequency lines;
- identifying a minimum amplitude of a frequency line in the set of frequency lines;
- and
- generating the minimized excitation signal having extreme values in response to receipt of an input signal, wherein generating the minimized excitation signal includes
- generating the minimized excitation signal having the extreme values using the number of frequency lines, frequency range of the SUT, and the minimum amplitude,
- wherein the extreme values of the minimized excitation signal are increased toward a central value without affecting the power spectrum of the minimized excitation signal.
An excitation signal generator (“ESG”) with an input for receipt of an input signal, wherein the ESG is configured to generate a minimized excitation signal with an associated power spectrum, the ESG comprising:
- a second input configured to receive a frequency range associated with a system under test (“SUT”);
- and
- a controller in signal communication with the input and second input, the controller configured to
- determine the frequency range of the SUT,
- identify a number of frequency lines to be in a minimized excitation signal;
- compute a set of frequency lines based on the frequency range of the SUT and the number of frequency lines;
- identify a minimum amplitude of a frequency line in the set of frequency lines, and
- generate the minimum excitation signal having extreme values in response to receipt of the input signal, wherein configured to generate minimum excitation signal includes
- the minimized excitation signal having the extreme values using the number of frequency lines, frequency range of the SUT, and minimum amplitude,
- wherein the extreme values of the minimized excitation signal are increased toward a central value without affecting the power spectrum of the minimized excitation signal.
A computer readable media that has instructions for generation of a minimized excitation signal with an associated power spectrum, the computer readable media comprising:
- a first set of instructions for determining a frequency range of a system under test (“SUT”);
- a second set of instructions for identifying a number of frequency lines to be in the minimized excitation signal;
- a third set of instructions for computing a set of frequency lines based on the frequency range of the SUT and the number of frequency lines;
- a fourth set of instructions for identifying a minimum amplitude of a frequency line in the set of frequency lines;
- and
- a fifth set of instructions for generating the minimized excitation signal having extreme values in response to receipt of an input signal, wherein. generating the minimized excitation signal includes
- generating the minimized excitation signal having the extreme values using the number of frequency lines, frequency range of the SUT, and the minimum amplitude,
- wherein the extreme values of the minimized excitation signal are increased toward a central value without affecting the power spectrum of the minimized excitation signal.
Dependencies are inferred from the claim text.