The advantages of AME:
Using the AME technology to transport or distribute RF signals has the advantage that the lines can be drawn very smoothly in the sense that there will be no hard 90° angles like with vias in the traditional PCB technology. Within the AME technology it is possible to smoothly transport the RF signal through coaxial lines with a predefined bending radius which minimizes any reflections throughout the signal paths. Furthermore, the shielding of the coaxial lines leads to the possibility to highly increase the packing density of the lines, since unwanted crosstalk is completely prevented.
In the traditional PCB technology external COTS components needed to be populated either on the top or bottom layer of the board. With the AME technology, this is no longer necessary. While passive components, like coils and capacitors can directly be printed and included in the inside of the AME structure, non-printable COTS components, like chips or resistors, can still be embedded into the AME structure. So, the need to place all components on the surface of the structure is no longer valid, giving rise to additional miniaturization steps.
If completely embedding active components, the question for heat dissipation concepts will also have to be discussed. But also in this field, the AME technology has solutions to offer. For instance, the conductive material can be used to print customized heat sinks to cool critical components. Alternatively, also embedding external cooling structures like heat pipes may be an option to tackle this issue.