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Related Experiment Video

Updated: May 23, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Accurate and low jitter time-interval generators based on phase shifting method.

P Kwiatkowski¹, Z Jachna, K Różyc

¹Military University of Technology, Kaliskiego 2, 00-908 Warsaw, Poland.

The Review of Scientific Instruments

|April 3, 2012

Summary

This study presents two novel time-interval generators using phase shifting. One leverages field-programmable gate array (FPGA) technology for low jitter, offering a cost-effective, high-precision solution.

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Area of Science:

Electrical Engineering
Digital Electronics
Signal Processing

Background:

Precise time interval generation is crucial for various electronic systems.
Existing methods may face limitations in cost, precision, or jitter performance.
Field-programmable gate arrays (FPGAs) offer a flexible platform for digital circuit design.

Purpose of the Study:

To introduce two novel time-interval generators utilizing the phase shifting method.
To demonstrate the feasibility of using FPGA technology for high-precision timing applications.
To achieve low jitter performance across a wide range of time intervals.

Main Methods:

Implementation of a time-interval generator using integrated digital clock manager units within an FPGA.
Development of a second time-interval generator employing a separate direct digital synthesizer.
Application of the phase shifting method for precise time delay generation.

Main Results:

The FPGA-based generator achieved jitter below 65 picoseconds (root mean square) from 4 nanoseconds to 50 milliseconds.
The direct digital synthesizer-based generator exhibited jitter below 15 picoseconds (root mean square) from 10.2 nanoseconds to 50 milliseconds.
Both designs demonstrate the effectiveness of the phase shifting technique.

Conclusions:

The phase shifting method is a viable approach for designing low-cost, high-precision time-interval generators.
FPGA technology provides a powerful and accessible platform for implementing advanced timing solutions.
The developed generators offer competitive jitter performance for demanding applications.