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EDI CON Online: RF Millimeter-Wave PCB Design Considerations for High Speed Digital


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10/13/20 11:30 am to 10/13/20 12:00 pm EST

Event Description

EDI CON Online

Title: RF Millimeter-Wave PCB Design Considerations for High Speed Digital 

Date: October 13, 2020

Time: 8:30am PT / 11:30am ET

Sponsored by: Rogers Corporation

Presented by: John Coonrod, Technical Marketing Manager

As High Speed Digital (HSD) rates are increasing, there are more electrical performance properties related to RF technology which need to be considered by the HSD designer.   As a basic comparison, RF technology is focused on frequency domain and HSD technology is focused on time domain.  Some electrical performance concerns in frequency domain can impact the time domain performance of HSD signals and some of these concerns will not.  However the larger concern for the potential impact is likely related to the increase in channel speeds of 56Gbps and above.

The clock signal used in HSD to generate a digital pulse train, is basically a composite of multiple RF waves which include some signal processing.  The lowest frequency wave is the Nyquist frequency and the other waves that make up the building blocks for the clock signal are 3rd, 5th and 7th harmonics. The actual HSD processing nowadays is more complicated, but these basic relationships will be explored in this paper when comparing electrical performance of RF circuits and HSD circuits at high frequencies and rates.  Comparisons will be made with single ended and differential pair circuits at frequencies up to 110 GHz and HSD rates up to 112 Gbps.

Presenter Bio:

John Coonrod is the Technical Marketing Manager for Rogers Corporation, Advanced Connectivity Solutions.  John has 32 years of experience in the Printed Circuit Board industry.  About half of this time was spent in the Flexible Printed Circuit Board industry regarding circuit design, applications, processing and materials engineering.  The past eighteen years have been spent supporting High Frequency Circuit materials involving circuit fabrication, providing application support and conducting electrical characterization studies.  John is the Chair for the IPC D24C High Frequency Test Methods Task Group and holds a Bachelor of Science, Electrical Engineering degree from Arizona State University.  

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