LTE Module Series
BG96-NA Hardware Design
BG96-NA_Hardware_Design Confidential / Released 46 / 64
Figure 23: Reference Circuit of RF Antenna Interface
Place the
π
-type
matching components (R1, C1, C2) as close to the antenna as possible.
5.1.4. Reference Design of RF Layout
For user’s PCB, the characteristic impedance of all RF traces should be controlled as 50 ohm. The
impedance of the RF traces is usually determined by the trace width (W), the materials’ dielectric constant,
the
distance between signal layer and reference ground(H),
and the clearance between RF trace and
ground(S)
. Microstrip line or coplanar waveguideline is typically used in RF layout for characteristic
impedance control. The following are reference designs of microstrip line or coplanar
waveguidelinewithdifferent PCB structures.
Figure 24: Microstrip Line Designon a 2-layer PCB
NOTE
