RF-BM-BG22A3(I)
Shenzhen RF-star Technology Co., Ltd.
Page 18 of 26
Figure 11. Reference Design of the External Antenna Traces
2.
The RF trace width and copper-clad spacing can be calculated by SI9000 software, and the impedance is controlled
to 50 Ω according to the actual board thickness, number of layers, plate, dielectric thickness, dielectric constant,
copper thickness, line width, line spacing, and solder mask thickness.
Example: FR4 is a double-layer board with a thickness of 1.0 mm. Through calculation, the width of the trace is
0.8254 mm, and the spacing between traces and copper is 0.22 mm.
Figure 12. SI9000 Impedance Calculation Diagram
