"Recently the clock channel jitter amplification has been observed in several publications. Currently in many high-speed I/O systems, to avoid the cost and the complex clock recovery circuit design, people use traces forwarding clock signal from transmitting IC to receiving IC. When these clock traces are long enough, the amount of attenuation will induce not only inter-symbol-interference (ISI) but also modulate with the input jitter. Eventually it will lead some type of jitter been amplified after the channel. Similarly, the high speed communication channel (data channel) will also face this issue. Since there are no studies on the jitter amplification in a data channel, it will be studied in this section. This part of study includes verifying and confirming this phenomenon in a clock channel. A more generalized periodic jitter amplification equation has been developed. Then, it compared different types of jitter amplification after lossy channels using different data patterns as sources.
The second part of the thesis is to investigate S21 magnitude extraction methods using an oscilloscope and pattern generator. S-parameter measurements of a digital link path are measured with VNAs or high-end TDRs. For multi-port in-situ measurements, these become inconvenient and time consuming. However, it can be handled more conveniently in the time domain (TD) by using a pattern generator and a multi-channel sampling oscilloscope, which are used for eye-diagram measurements. This part of work outlines and compares three methods to extract S21 magnitude from the time domain measurements using a pattern generator and a sampling oscilloscope for any channel. The setup differs in terms of the input waveform and the processing. The comparison provides insight into the advantages and limitations of each method"--Abstract, page iii.
Fan, Jun, 1971-
Drewniak, James L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
Missouri University of Science and Technology
x, 56 pages
© 2016 Xinyun Guo, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Telecommunication -- Traffic -- Mathematical models
Signal integrity (Electronics)
Electronic OCLC #
Guo, Xinyun, "Study jitter amplification of a passive channel and investigation of S21 magnitude extraction methodologies using a pattern generator and oscilloscope" (2016). Masters Theses. 7552.