Tips for CST modeling
N° 1: Delete some unnecessary parts and make model be simply, such as, only modeling the air part in the waveguide modeling, don’t need to draw the metal part.
N°2: Delete unnecessary details : far from the port (< lambda/8 ) or very small object (< lambda /20)
N°3: Avoid too close to two objects which will result in huge calculating because of the very fin mesh.
N°4: Minimize the use of real surfaces for curve boundaries with error< 2.5%.
N°5: Using periodic boundary or/and symmetry to minimize the question.
N°6: Try to reduce the air box and port length(“deembed” function).
N°7: Using “dummy” virtual object to optimize the mesh.
N°8: Try to using perfect material for calculating.