I am presently looking to use HL7800 in one of small form factor boards. Hence, space is a constraint and I am aiming to place components on both sides of PCB. Here are a few of my queries:
- Can we place components below the module ( in Bottom Layer ) except antenna and SIM section? Components include micro-controller and power supply section.
- Can we route wires and place vias under the module ( in inner layers and bottom layer ) except antenna and sim section?
- Any specific board stack-up recommended ? How many layers?