RF / Microwave

Today’s RF / microwave and millimeter wave designers are challenged more than ever with the task of achieving an optimal balance between cost and performance when selecting base materials. Key factors include precise control of dielectric thickness, dielectric constant and dissipation factor, achieving lowest tolerance within a batch as well as batch-to-batch.

If any one of these three factors is changed, variations will be seen in the performance of the circuit, such as impedance control, amplitude and phase stability.

As frequencies increase, designers are looking to very stable dielectric materials as a means of achieving optimal signal performance. This would include the designers also paying closer attention to the selection of copper foils such as VLP-2 (very low profile 2 micron), as well as uniform glass reinforcement, helping to improve overall performance and ease of PCB manufacturing

I-Tera® MT40 (RF/MW)
Tg: 215°C
Td: 360°C
Dk: 3.38 / 3.45 / 3.60 / 3.75
Df: 0.0028 - 0.0035
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Astra® MT77
Tg: 200°C
Td: 360°C
Dk: 3.00
Df: 0.0017
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PCB Material Selection for RF, Microwave and Millimeter-wave Design

This presentation discusses Printed Circuit Board (PCB) attributes for RF, microwave, millimeter-wave systems through an application example using an advanced automotive safety system.

Thermal Management of PCBs in Embedded Systems

This presentation discusses thermal management considerations for embedded systems.

New Thermoset PCB Material Emerging for mmWave Applications

This paper discusses a new enabling technology which employs a thermoset matrix that has very good adhesion to metals, enabling the use of copper with extremely smooth surfaces.

PCB-Substrate Characterization at Multigigahertz Frequencies Through SIW Measurements

This paper discusses how substrate integrated waveguides (SIWs) mimic the behavior of rectangular waveguides (RWGs) and can be implemented with standard PCB technology.

Laminate Materials with Low Dielectric Properties

This paper focuses on new laminate materials with potential uses in multilayer printed circuit boards (PCBs) for high-speed digital/RF/microwave applications.

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