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Understanding Circuit Material Performance Concerns for PCBs at Millimeter-Wave Frequencies

Published:

April 11, 2018

Author:

John Coonrod

Abstract:

Millimeter-wave (mmWave) frequency applications are becoming more common. There are applications utilizing PCB technology at 60 GHz, 77 GHz and many other mmWave frequencies. When designing a PCB for mmWave frequency, the properties of the circuit materials need to be considered since they can be critical to the success of the application. Understanding the properties of circuit materials at these frequencies is very important.

This paper will give an overview of which circuit material properties are important to mmWave frequency applications using PCBs. There will be data supplied which demonstrates why these properties are essential to the circuit material selection for mmWave applications. Some properties discussed will be dielectric constant (Dk) control, dissipation factor, moisture absorption, thickness control and TCDk (Temperature Coefficient of Dk). Measured comparisons will be shown for insertion loss and Dk versus frequency for different types of circuit materials up to 110 GHz. As part of the test data, the impact on circuit performance due to TCDk and moisture absorption will be shown at mmWave frequencies....

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Company Information:

Rogers Corporation

Rogers' high performance laminates and bondplies are engineered to meet stringent customer requirements for 5G wireless communication, wired infrastructure, automotive radar sensors, aerospace, satellites and more.

Chandler, Arizona, USA

Manufacturer

  • Phone 480-961-1382

Rogers Corporation website

Company Postings:

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(5) technical library articles

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