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Journal Article
Optimal equivalent‐time sampling for periodic complex signals with digital down‐conversion
- Authors
- Kyung-Won Kim, Heon-Kook Kwon, Myung-Don Kim
- Issue Date
- 2024-04
- Citation
- ETRI Journal, v.46, no.2, pp.238-249
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원
- Language
- English
- Type
- Journal Article
- Abstract
- Equivalent‐time sampling can improve measurement or sensing systems because it enables a broader frequency band and higher delay resolution for periodic signals with lower sampling rates than a Nyquist receiver. Meanwhile, a digital down‐conversion (DDC) technique can be implemented using a straightforward radio frequency (RF) circuit. It avoids timing skew and in‐phase/quadrature gain imbalance instead of requiring a high‐speed analog‐to‐digital converter to sample an intermediate frequency (IF) signal. Therefore, when equivalent‐time sampling and DDC techniques are combined, a significant synergy can be achieved. This study provides a parameter design methodology for optimal equivalent‐time sampling using DDC.
- KSP Keywords
- Complex Signal, Intermediate frequency, Parameter design, Sampling rate, Sensing system, Time sampling, Timing skew, design methodology, digital converter, frequency band, periodic signal
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
