GEMS is used to simulate the patch antenna array with the network system. A probe between the patch feed and ground plane, and the excitation, lumped port, is located the gap between the probe and ground plane. GEMS is used to optimize the gap between the ground and substrate.
The basic design procedure in the simulation:
Draw the substrate first and then assign the dielectric material to it
Import the patch array model and assign it to be PEC, or draw it in GEMS designer,
Draw a probe that touches the feed point of the antenna feed network
Draw a line between the probe and ground plane
Define the line as a lumped port
Define the optimized dimension as a parameter, and associate it to all the objects or options
Specify the list of parameter values (GEMS will run for each case, and collect the simulation result for each case in one file)
Specify the domain size and boundary.
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
Use a small gap between the probe and ground plane
Mesh
Non-uniform
The mesh should pass the key edges of antenna structure
