A 100 Gb/s transceiver with GND-VDD common-mode receiver and flexible multi-channel aligner

Resonance stub effect in a transition from a through via hole to a stripline in multilayer PCBs

“…W ITH THE rising data rate in transmission channels of high-speed digital and communication systems [1], the importance of high-frequency phenomena in interconnect circuits continues to grow as a result of their effects on performance and cost. A multilayer printed circuit board (PCB) is a type of low-cost interconnect structure which commonly includes through via holes and striplines.…”

Today’s computing challenges: opportunities for computer hardware design

“…However, the interconnect partially takes advantage of the technology scaling, because faster transistors enable a better circuit to overcome the increased channel loss. Figure 11A shows a survey from the state-of-the-art published works ( Tamura et al, 2001 ; Haycock & Mooney, 2001 ; Tanaka et al, 2002 ; Lee et al, 2003 , 2004 ; Krishna et al, 2005 ; Landman et al, 2005 ; Casper et al, 2006 ; Palermo, Emami-Neyestanak & Horowitz, 2008 ; Kim et al, 2008 ; Lee, Chen & Wang, 2008 ; Amamiya et al, 2009 ; Chen et al, 2011 ; Takemoto et al, 2012 ; Raghavan et al, 2013 ; Navid et al, 2014 ; Zhang et al, 2015 ; Upadhyaya et al, 2015 ; Norimatsu et al, 2016 ; Gopalakrishnan et al, 2016 ; Shibasaki et al, 2016 ; Peng et al, 2017 ; Han et al, 2017 ; Upadhyaya et al, 2018 ; Wang et al, 2018 ; Depaoli et al, 2018 ; Tang et al, 2018 ; LaCroix et al, 2019 ; Pisati et al, 2019 ; Ali et al, 2019 , 2020 ; Im et al, 2020 ; Yoo et al, 2020 ), where we can confirm the correlation between the technology node and the data rate. On the other hand, however, overcoming the increased channel loss has become more and more expensive as the loss is going worse as the bandwidth increases; the equalization circuits consume too much power to compensate the loss, which makes people hesitant to increase the bandwidth.…”

An Accurate Experimental Method for Characterizing Transmission Lines Embedded in Multilayer Printed Circuit Boards

“…Its voltage-current transmission matrix (ABCD matrix) is represented by (1) 1521-3323/$20.00 © 2006 IEEE The measured matrix always includes associated errors and is assumed to be written as , when the coupling errors can be ignored. Both and are transmittance errors that exist at the left and right edges of the transmission line, due to connective discontinuities, such as via holes and connectors (Fig.…”

“…This forms a set of equations and can be solved for ( 1,2) and under the condition that , 1. The solutions are as follows:…”

“…Recent demands for high-speed digital data transmission, such as CMOS transceiver circuits [1], require a data rate of no less than 10 Gb/s. In these circumstances, the basic trapezoidal wave clock signals become more than 2.5 GHz, thus, creating higher order harmonics in the signal transmission medium.…”