User's Manual

VZ22Q LTE Module
V0.1
USI
Confidential Page 5 of 23
2. PCB Design
2.1 PCB Design Guide
i. Keep away high interference signal as far as possible. （Ex: clock, high frequency signal,
switch, ...etc.）
ii. RF and analog signals should be protected. If there is enough space, please divide ground
plane into analog and digital part. NO SIGNALS WHATEVER is permitted to cross this
gap.
iii. Ensure power integrity and current capability, and using “Power plane” will be a good
solution.
iv. Ground integrity under module will reduce interference.
v. Traces under the pads or LGA module are prohibited. Please use radiative layout as follows.
Figure 2-1: Radiative Layout