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PCB Circuit Board Material Selection for Different 5G Frequency Bands (Part 1)

As 5G, the Internet of Things and other applications will adopt higher frequencies, from 3GHz to 6GHz or even 2-30GHz in the past, which will bring new technological trends for 5G antenna radio frequency materials. The following are some discussions on how to choose pcb circuit board materials and their influence in different frequency bands of 5G.

If it is a 24GHz power amplifier, what material is recommended?

First consider the Rogers RO4350B/RO4835 material and its LoPro version. If the performance is insufficient, please consider upgrading the panel with less loss, such as RO3003.

Which substrate material is more suitable for the future millimeter wave antenna material of 5G?

5G antenna board (PCB circuit board) can focus on RO4730G3 material, which is a patented resin system of hydrocarbon hollow silicon ball filler, with excellent electrical, mechanical and thermal properties.

What is the difference between RO4450T™ and RO4450B™?

In one hand, with different thicknesses, RO4450T material has 3 mils, 4 mils, and 5 mils, while RO4450B material has only 4 mils. On the other hand, there are slight changes and upgrades to rmula, such as better fluidity.

What are the properties of TCDk restricted materials? Can you explain what TCDk is?

TCDk is the temperature coefficient of the material’s dielectric constant, that is, how much the dielectric constant Dk becomes at high and low temperatures, which will affect the performance of the designed product at high or low temperatures. For example, a bandpass filter used for microstrip lines. Generally speaking, using RA, RQ or RZ, the roughness of the copper foil is more accurate as the standard. Copper foil roughness has different definitions, which are closely related to electrical performance. For example, loss is called RQ root mean square value, and other RA and RZ are usually given by copper foil supplier parameters.

Can you recommend PCB material suitable for 100GHz or above?

Please refer to RO3003 material, DiClad880 material, RT/duroid5880 material low loss high frequency chip, etc.

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XPCB Limited is a premium PCB & PCBA manufacturer based in China.

We specialize in multilayer flexible circuits, rigid-flex PCB, HDI PCB, and Rogers PCB.

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