Even/Odd Mode Impedance Simulation of Patterned/Finite Ground Plane in ADS Momentum ?

[Blue_Electrons]

Hello,

I'm currently designing a Patterned (w/ Slots) Marchand Balun to increase the Even/Odd Impedance Ratio for good balance.

LineCalc is able to simulate Zoe and Zoo given the width and spacing of a coupled lines but it assumes an infinite ground plane.

However, for the patterned ground plane, the LineCalc would not be applicable. Any idea on how to simulate this using ADS?

 

[Microwave123]

"There is 2 way to do this:

1) Define the Defected Ground Structure (DGS) on the SLOT layer.
2) Define it on the STRIP layer and assign ground reference ports on it.

Hamid"

Or you can use a 3D simulator like HFSS and CST.

Microwave123

 

[Blue_Electrons]

"There is 2 way to do this:

1) Define the Defected Ground Structure (DGS) on the SLOT layer.
2) Define it on the STRIP layer and assign ground reference ports on it.

Hamid"

Or you can use a 3D simulator like HFSS and CST.

Microwave123

Hi,

I appreciate your inputs.
ADS2009 actually have an integrated full 3D simulator which is the EMDS. Are you familiar with this?

---------- Post added at 08:59 ---------- Previous post was at 07:46 ----------

"There is 2 way to do this:

1) Define the Defected Ground Structure (DGS) on the SLOT layer.
2) Define it on the STRIP layer and assign ground reference ports on it.

Hamid"

Or you can use a 3D simulator like HFSS and CST.

Microwave123

Simulation in ADS Momentum only yields S-parameters. I don't think it is able to output the even/odd impedance data for the coupled lines in a Marchand Balun.