_skorpion_
Newbie level 3
symmetry boundary
Hi all,
I have some problems when I try to simulate in HFSS a filter (that has a plane of symmetry) using the Symmetry Boundaries and I would like to know if you can help me.
I have looked in the HFSS online help and I am doing theses passes:
Assigning Symmetry Boundaries:
1. Select the object face to which you want to assign the symmetry boundary.
2. Click HFSS>Boundaries>Assign>Symmetry.
The Symmetry Boundary dialog box appears.
3. Type the boundary’s name in the Name text box or accept the default name.
4. Select the type of symmetry plane the boundary represents: Perfect E or Perfect H.
5. Click Impedance Multiplier.
If the design includes a port, you must adjust the impedance multiplier or the computed impedances will not be for the full structure.
The Port Impedance Multiplier dialog box appears.
6. Type a value in the Impedance Multiplier box, and then click OK.
7. Click OK.
I have simulated the complete filter (without the symmetry Boundary) but when I draw only half, I select the face (that is a plane of symmetry) and I use the impedance multiplier (2 to Perfect E or 0.5 to Perfect H) the result that I obtained is wrong (approximately 0).
Do you know which could be my problem? Should I draw the complete structure and then try to apply the symmetry boundary? Could you tell me something more about this option?
Many thanks in advance
Hi all,
I have some problems when I try to simulate in HFSS a filter (that has a plane of symmetry) using the Symmetry Boundaries and I would like to know if you can help me.
I have looked in the HFSS online help and I am doing theses passes:
Assigning Symmetry Boundaries:
1. Select the object face to which you want to assign the symmetry boundary.
2. Click HFSS>Boundaries>Assign>Symmetry.
The Symmetry Boundary dialog box appears.
3. Type the boundary’s name in the Name text box or accept the default name.
4. Select the type of symmetry plane the boundary represents: Perfect E or Perfect H.
5. Click Impedance Multiplier.
If the design includes a port, you must adjust the impedance multiplier or the computed impedances will not be for the full structure.
The Port Impedance Multiplier dialog box appears.
6. Type a value in the Impedance Multiplier box, and then click OK.
7. Click OK.
I have simulated the complete filter (without the symmetry Boundary) but when I draw only half, I select the face (that is a plane of symmetry) and I use the impedance multiplier (2 to Perfect E or 0.5 to Perfect H) the result that I obtained is wrong (approximately 0).
Do you know which could be my problem? Should I draw the complete structure and then try to apply the symmetry boundary? Could you tell me something more about this option?
Many thanks in advance