Frequency modulated (fm) chirp testing for automotive radars using standard automated test equipment (ate) digital pin channels
AssigneeAdvantest Corporation
InventorsRoger McAleenan, Robert Bartlett
Life of this patent
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Abstract
A method for characterizing a FM chirp signal generated by a device under test (DUT) is disclosed. The method comprises receiving a selection of a sample frequency and chirp duration for capturing the FM chirp signal. The method also comprises down converting the FM chirp signal and capturing the FM chirp signal using a digital pin electronics card. The method comprises obtaining a plurality of period measurements from the captured FM chirp signal using a timing measurement unit (TMU) of an automated test equipment (ATE) and converting each of the plurality of period measurements into corresponding frequency values.
Claims15
A method for characterizing a FM chirp signal generated by a device under test (DUT), the method comprising:
- receiving a selection of a sample frequency and chirp duration for capturing the FM chirp signal;
- down converting the FM chirp signal;
- capturing the FM chirp signal using a digital pin electronics card to produce a captured FM chirp signal, wherein the capturing comprises capturing samples of the FM chirp signal at a high rate at precise time intervals;
- incrementally calculating a frequency range per time interval;
- and
- calculating an average frequency corresponding to each time interval.
An Automated Test Equipment (ATE) system, the system comprising:
- a memory comprising instructions stored therein, wherein the instructions are operable to characterize a frequency modulated (FM) chirp signal generated by a device under test (DUT);
- a processor coupled to the memory, the processor configured to operate in accordance with the instructions to:
- receive a selection of a sample frequency and chirp duration for capturing the FM chirp signal;
- down convert the FM chirp signal;
- capture the FM chirp signal using a digital pin electronics card to produce a captured FM chirp signal, wherein the capturing comprises capturing samples of the FM chirp signal at a high rate at precise time intervals;
- incrementally calculate a frequency range per time interval;
- and
- calculate an average frequency corresponding to each time interval.
Dependencies are inferred from the claim text.