Product Info

WA Module Series

BG95 Series Hardware Design

BG95_S

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Figur

e 25: Reference Design of Main Antenna Interface

5.1.4. Reference Design of RF Layout

For

users’ PCB, the characteristic impedance of all RF traces should be controlled to 50 Ω. The

impedance of the RF traces is usually determined by the trace width (W), the materials’ dielectric constant,

height from the reference ground to the signal layer (H), and the clearance between RF traces and

grounds (S). Microstrip or coplanar waveguide is typically used in RF layout to control characteristic

impedance. The following are reference designs of microstrip or coplanar waveguide with different PCB

structures.

Figur

e 26: Microstrip Design on a 2-layer PCB