5G covers multiple radio architectures. A compact sub-6 GHz module, a radio unit and a mmWave array do not share one universal stackup. Identify the actual bands, channels and integration boundaries before choosing the board technology.
Layout decisions to resolve early
- Separate the RF, high-speed digital and power requirements by layer and region.
- Review channel-to-channel consistency where phase or amplitude matters.
- Plan thermal paths without interrupting critical RF reference structures.
- Agree on the fabrication and assembly tolerances that matter to the chosen architecture.
Choose the stackup with the signal path
Identify which connections need controlled impedance and which geometric structures require full electromagnetic analysis. Request the finished copper and dielectric dimensions, not just the nominal material thickness. A microstrip estimate is useful for exploring a candidate feedline, while launches, antennas and coupled structures need models appropriate to their geometry.
Make the prototype measurable
Keep the test plan connected to the design: define accessible reference planes, calibration structures and representative prototype configurations. When a hybrid construction is proposed, verify its electrical behavior and its manufacturability together.
Prepare the manufacturing handoff
Supply the board outline, layer stack, laminate grades, drill data, fabrication notes and critical tolerances. Mark features whose dimensions should not be changed without design approval. Include a clear question list for the fabricator so the release does not depend on undocumented assumptions.
What to include in your project inquiry
- The product architecture and target frequency range.
- The board size, intended quantity and proposed materials.
- The principal performance constraint and available test equipment.
- Design files or a sketch, if available. Attachments remain optional.
Review your next RF PCB
Share the operating band, board outline, proposed materials and the question you want to resolve. Drawings are optional.
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