EDI CON Online

Title: RF Performance Comparisons between Microstrip and Grounded Coplanar Waveguide at mmWave Frequencies

Date: August 11, 2021

Time: 10:30am PT / 1:30pm ET

Sponsored by: Rogers Corporation

Presented by: John Coonrod, Technical Marketing Manager, Rogers Corporation

Abstract:
It is common for RF applications using PCB technology at microwave frequencies to use microstrip circuit structures. However, as the frequency increases, at higher microwave frequencies and millimeter-wave (mmWave) frequencies, there are increased RF performance issues for the RF designer to consider. In theory, the Grounded Coplanar Waveguide (GCPW) circuit structure addresses many of the mmWave design concerns. Although, in practice, there are multiple influences which can impact mmWave RF performance due to PCB manufacturing and the RF performance of GCPW is more impacted than microstrip.

This presentation will give an overview of the basic RF performance of microstrip and GCPW, in the range of microwave and mmWave frequencies. Following the overview, several topics will be explained which are related to mmWave design concerns with an emphasis on several common PCB fabrication processes which can influence RF performance of microstrip and GCPW differently. Measured RF data up to 80+ GHz will be shown to illustrate many of the concepts discussed.

Presenter Bio:
John Coonrod is a Technical Marketing Manager for Rogers Corporation,. John has 34 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 twenty 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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