Masters Theses


Han Deng

Keywords and Phrases

De-embedding; Differential probe; High frequency; High speed; PCB design; Unified launch pattern


"Differential probe is wildly used in the signal integrity area to do the accuracy signal measurement in frequency domain or time domain. Comparing with traditional SMA connector measurement, the probe measurement has several advantages such as the high flexibility and measurement efficiency. Nevertheless, the probe has some disadvantages such as multiple design patterns and the difficulty of fast landing. In this thesis, a unified probe landing pattern is provided to solve the con of probes and a probe testing fixture is designed for characterize probe and extract the probe model.

In the first portion, a unified differential probe launching pattern is proposed for universal usage of different types of differential probes. Full wave-modeling of the transition with the unified probe launching pattern is developed for optimization of dimensions. For the unified probe launching pattern evaluation, 16-layer test vehicles were designed with engineered transitions for performance up to 40 GHz. Four-port measurement results of different differential pairs from the test vehicle are used as the 2x thru reference and DUT for de-embedding. By using GSSG probe, accurate DK and DF along with frequency can be extracted.

In the second portion, a probe testing fixture is designed based on the unified probe launch pattern design to characterize the performance of probe based on the smart fixture de-embedding method. The full wave model is extracted from the fixture design to server future probing measurement design and the circuit model is extracted to study the effectiveness from the specific portion behavior"--Abstract, page iii.


Drewniak, James L.

Committee Member(s)

Fan, Jun, 1971-
Hwang, Chulsoon
Chen, Qinghua


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


Missouri University of Science and Technology

Publication Date

Spring 2019


x, 52 pages

Note about bibliography

Includes bibliographical references (pages 49-51).


© 2019 Han Deng, All rights reserved.

Document Type

Thesis - Open Access

File Type




Thesis Number

T 11522

Electronic OCLC #