GEMS

SAM head model with cell phone

The SAM head model with a cell phone nearby is simulated by using GEMS. The MIMO antenna includes two ports and the outputs will be S-parameters, far field patterns, ECC and MEG, and 1-g SAR, 10-g SAR, peak SAR and 3-D SAR distribution.

The basic design procedure in the simulation:

	Import the SAM head model in the SAT format and specify the material type for both the plastic shell and inner human tissue equivalent material
	Import the cell phone model in the SAT format and specify the material type for each part
	Add two ports and assign them two different source group IDs, say, 1 and 2
	Specify the far field pattern parameters
	Select the human head model, copy and paste it, and specify the SAR output
	Generate the adaptive mesh
	Specify the convergence criterion
	Simulate the project using a single PC or cluster

The basic settings in the simulation:

Option	Setting	Description
Boundary	PML truncates all six walls	Open space problem
Excitation	Lumped port	With different IDs
Mesh	Non-uniform and conformal mesh	Adaptive mesh
Output	S-parameters, far field pattern, and SAR	You can output the SAR near the cell phone
Simulation	A PC or cluster

SAM Head Model With
Cell Phone

3-D Far Field Pattern

3-D SAR Distribution

Inner Configuration of Head
and Phone Models

3-D SAR Distribution (shade region)

S-Parameters