Masters Theses


Wei Qian

Keywords and Phrases

Channel Emulation


"High speed serial link is now the dominant signal propagation design in various communication, computing and embedded applications. Emulation of such channels is important in signal integrity design and product testing, where full channel simulation is restricted due to the need for protection of intellectual property and frequent channel reconfiguration. This thesis introduces robust lossy material and FIR filter design methods that can be used for channel emulation to provide a solution under these restrictions. Based on the channel characterizations normally obtained in the frequency domain by vector network analysis, different emulation strategies and optimization techniques are utilized to emulate different types of channels. Lossy material overlaid on a microstrip trace can emulate a channel with a smooth loss curve. Likewise, lossy material with an RF FIR filter chip can emulate channel with nonlinear nulls and ripples. The emulation performance is evaluated in the time domain by use of an eye diagram and parameter comparison. During the synthesis of the emulating channel, the physical origins of the channel's time and frequency domain characteristics are analyzed. Furthermore, the hardware realization of the emulation structure is demonstrated with positive examples"--Abstract, page iv.


Pommerenke, David

Committee Member(s)

Fan, Jun, 1971-
Beetner, Daryl G.


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


National Science Foundation (U.S.)


This material is based upon work supported by the National Science Foundation under Grant No. 0855878.


Missouri University of Science and Technology

Publication Date

Spring 2015

Journal article titles appearing in thesis/dissertation

  • Emulation of lossy channels using a low loss microstrip trace with added lossy materials
  • Design of a dual-stage dual-fir channel emulator


x, 51 pages

Note about bibliography

Includes bibliographical references.


© 2015 Wei Qian, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Signal integrity (Electronics)
Shielding (Electricity)
Antennas (Electronics)

Thesis Number

T 10687

Electronic OCLC #