"This thesis comprises of two parts. Firstly, the Flyover Quad Small Form Pluggable (FQSFP) approach for 56+ Gbps applications is introduced to overcome the limitations from a large loss on typical QSFP ports with surface mount to Printed Circuit Board (PCB) traces. By replacing the PCB traces to the twinax cables, it is possible to achieve around 7 dB lower insertion loss at 40 GHz for the 12-inch path from the switch IC to connector than that of PCB trace with a low loss substrate. Also, to investigate electromagnetic interference (EMI) aspect of FQSFP approach, a simulation model of FQSFP has been developed which corroborates favorably with measurement profiles of time domain reflectometry (TDR) at FQSFP port and total radiated power (TRP) from FQSFP in a test vehicle. Furthermore, the EMI profile of the FQSFP after integration of the cage has also been studied.
The second portion of the thesis includes the system level implementation of a novel Z-directed component (ZDC) capacitor studied in two phases. Firstly, the ZDC interaction with planes is modelled using full wave 3D simulation and the impedance profile is compared to that of a regular decoupling capacitor, when it is placed far away from the Integrated Circuit (IC). Secondly, utilizing a commercial tool, the ZDC is implemented on a real PCB design where the local decoupling capacitors underneath the IC are replaced with ZDC and their performances are compared. It is shown that the high frequency performance can be significantly improved by reducing the current path inductance, the advantage of using ZDC"--Abstract, page iii.
Drewniak, James L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
Missouri University of Science and Technology
xii, 57 pages
© 2019 Pranay Kumar Vuppunutala, All rights reserved.
Thesis - Open Access
Electronic OCLC #
Vuppunutala, Pranay Kumar, "EMI design of flyover QSFP (FQSFP) connector for 56+ Gbps applications, system level modelling of the Z-directed component (ZDC)" (2019). Masters Theses. 7893.