Coplaner Waveguide Impedance testing

ℹī¸ Q & A Help Zone PCB Design Tool Q&A
1

Standard 4 layer PCB has only mentioned single ended , Diff 90 and 100 impedance Trace width and space requirements.

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This does not described Top or bottom Co-planer waveguide Trace width and Space from adjacent ground layer.

4 Layer 1.6mm ENIG Design Rules - :open_book: Knowledge Base / :magnifying_glass_tilted_right: Design Rules - AISLER Creative Community

RF trace need CPW as below stackup, while I get coupen test report when I place oder for standard 4 layer stack-up?

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2

Hey @Ronak-Shah ,

An impedance check can be requested. To do so, please request a quote for your project, letting us know what tolerance you require.
Compliance with the impedance values is then checked using a separate test coupon for each production run. All the different Z0 values for each layer are measured and recorded.

Does that help? :slight_smile: