ENGINEERING ANSWER
GNSS receiver boards must manage weak wanted signals alongside local digital noise and possible strong interferers. Material selection is one part of a larger layout, filtering and grounding problem.
What to decide before release
Trace the antenna-to-receiver path and protect it from noisy supplies and clocks. Model the feed, filter and amplifier interfaces. Check antenna biasing and protection components for their RF effects.
Checks to put in your design brief
- Map nearby noise sources
- Budget front-end loss
- Validate receiver performance in the final enclosure
Important distinction
Choosing RO4350B does not by itself improve sensitivity if coupling or front-end mismatch dominates.
Sources & basis
Material facts follow the cited source. Design checks are preliminary guidance, not supplier process instructions.