Antenna Interfaces; Pcb Structures Of Microstrip And Coplanar Waveguide; Pcb Structure Of Microstrip Waveguide; Pcb Structure Of Coplanar Waveguide - Quectel EC2 Series Design Manualline

LTE Standard Module Series
EC2x&EG2x-G Series PCB Design Guideline

3.11. Antenna Interfaces

3.11.1. PCB Structures of Microstrip And Coplanar Waveguide

3.11.1.1. PCB Structure of Microstrip Waveguide

Figure 30: PCB Structure of Microstrip Waveguide

3.11.1.2. PCB Structure of Coplanar Waveguide

Factors affecting impedance include dielectric constant (usually 4.2–4.6, here 4.4), dielectric layer height
(H), RF trace width (W), the spacing between RF traces and the ground (S) and copper thickness (T).
When T = 0.035 mm, the following table lists the recommended values of W and S for 50 Ω coplanar
waveguide under different PCB structures.
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