5-PS-resolution waveform-capture-device on a field-programmable gate-array with dynamic phase-shifting
AssigneeOhio State Innovation Foundation
InventorsNoeloikeau Charlot, Daniel Gauthier, Andrew Pomerance
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Abstract
A waveform capture device (WCD) is a flexible measurement system capable of recording complex digital signals on trillionth-of-a-second (ps) time scales. The WCD may be implemented via modular code on an off-the-shelf field-programmable gate-array (FPGA) and incorporates both time-to-digital converter (TDC) and digital storage oscilloscope (DSO) functionality. The device captures a waveform by taking snapshots of a signal as it propagates down an ultra-fast transmission line known as a carry chain (CC). It may be calibrated via a dynamic phase-shifting (DPS) method that requires substantially less data and resources than conventional techniques.
Claims14
A device comprising:
- a clock that generates a clock signal;
- a time-to-digital converter (TDC) that includes a carry chain (CC);
- and
- a digital oscilloscope (DO),
- wherein an input signal(S) passes through the carry chain (CC) in accordance with the clock signal.
A waveform-capture-device (WCD) comprising:
- a clock that generates a clock signal;
- a time-to-digital converter (TDC);
- a digital oscilloscope (DO);
- and
- a tapped delay line (TDL) comprising a plurality of carry-chains (CCs) and a plurality of registers,
- wherein an input signal(S) passes through the carry chain (CC) and buffered in the registers in accordance with the clock signal (C).
Dependencies are inferred from the claim text.