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# Ads And Momentum And Mesh

## [ADS] Momentum Mesh doesn't fit layout

Hi guys, I am trying to simulate the characteristics of a branch-line coupler in EM simulation. However, the momentum mesh doesn't fit the layout (the upper edge marked in attached picture). No matter how many cells/wavelength are used or other options in mesh tab of simulation options are set, it didn't work. Anyone know the way to fix (...)

## Momentum design with strip and slot

Hello all! I am newbie in designs with momentum (ads 2009) and I have some doubts about this software. I'm trying to build a power divider and I have a first design with strips. The results are good with momentum but very difference if I use EMDS (with a difference of 15 (...)

## frequency meshing in ADS momentum

hello; the result of simulation in ads momentum depends on the meshing frequency that we choose, how we can define the optimum frequency for simulation? thanks

## Approximating Complex Geometry to Reduce Analysis

Hi all, I've been using ads with momentum for years to simulate PCB boards. Often I import files from the mechanical engineers to create the basic outline. Now I've been toying with 3D EM simulators to generate antenna patterns on complex surfaces and have been having a lot of trouble. I've got an evaluation copy of (...)

## two question for simulation!

1-why momentum(ads) works with an infinite ground plane? The advantage is that these infinite planes (=boundary conditions) are available "for free", without having to mesh a "drawn" ground plane. This is more efficient for memory and simulation time. we can define a finite ground plane

## Agilent ADS slot/strip planes difference

Hi In agilent ads momentum there are two ways to model a ground plane: slot_planes and strip_planes. In slot_plane method the program only meshes the voids, like antipads and splits, while in strip_plane method it meshes the copper (...)

Hello all, I am having a problem of frequency shift in ads. I have a microstrip filter design which I simulate in momentum. This filter's center frequency in 1580MHz in ads 2009U1. However, the same filter's center frequency is 1615MHz in ads 2011. I use same substrate parameters and (...)

## how to delete mesh drawing in ADS layout

Hello there: I run into a problem and dont know how to get rid of it. I copied a piece of patch with mesh drawing on it to another layout design. then, I deleted that copied patch in the latter layout design. but the mesh persisted and I can not get rid of it. Did anyone here (...)

## Exporting from CST Layout to ADS 2008 using DXF

u have to create a new layer in ads. go to layer--> edit--> in the bottom enable new tab and give some layer name like (layout) and save now u import the structure it will import easily

## simulate with ADS momentum errors

Hello, everyone! I am simulating with ads momentum, while simulating run in mesh generation，I meet a error,as shown below： ERROR：MomMSHmaker: internal error 11 -- segmentation violation How could I solve it? Best wishes