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# Open Cst Boundary Condition

19 Threads found on edaboard.com: Open Cst Boundary Condition

## [Moved] trying to design rectangular patch microstrip antenna

Hi there, I'm assuming you are using cst MWS. You need to go to "open boundaries" settings and check that it is set to center frequency and monitors.

## Magnetostatic CST boundary condition problems

Hi All, I'm simulating a magnetostatic problem involving two magnets separated by a thin copper spacer. The total magnetic assembly is on the order of 10 mm cubed. The magnetization is in the same direction and I use open boundary conditions on all sides. The problem is that I find that the height of the magnetic field zero point (...)

## CST Boundary condition

Set your boundaries to open (add space) in all directions and set your background material to normal.

## cst simulation open add space boundary condition

i am simulating a structure with cst , my boundary conditions are all open add space . when i simulate my structure in frequancy range btw 2 to 6 gh i get totally different result than when i simulate the same structure in frequancy range 2-10 gh . so , what is wrong :?: :?: :-?

## open boundary condition in CST

hi Do you know what is the optimum distance from air box in cst? what is the best answer for adding space to open boundary condition? when I use lambda/4 and lambda/2 in central frequency the answers are different. thanks

## how to set boundary condition of dielectric resonator filter?

Hello, I designed the 38 GHz dielectric resonator filter using cst microwave studio. Now I have problem to set the boundary condition of dielectric resonator filter during simulation. How to the set boundary condition? is it to set Et=0 or open? As attached is the designed of 38 GHz (...)

## FD solver in CST Mws

Hi I designed a nanoantenna structure in cst and defined a plane wave for excitation and boundary condition is set to open add space. when I try to run FD solver for it, program gives an error about fd solver not working with open boundaries . is it common or I missed some settings somewhere ? cause I've (...)

## help simulat EBG structure using CST

i'm already start to simulate my design but there are more methods -Microstrip transmission line - cell with boundary condition (xmin , xmax Et=0), (ymin, ymax Ht=0), (Zmin,Zmax open add space) - cell with boundary condition (Xmin, Xmax periodic), (Ymin, Ymax periodic) (Zmin,Zmax open add space)

## how to model boundary condition for partial ground plane (Zmin) using CST MWS??

hi, im trying to design a 900Mhz feed line rectangular patch antenna with partial ground plane using cst MWS,, i need help regarding how to model the boundary condition. What should i put as the Zmin?? is it 'Electric (Et=0)' ?? or 'open'? or 'open (add space)'? ps- currently im using Zmin= (...)

## CST Microwave Problem - Questioning Error

Hi, I have a problem. I am simulating a structure w/ a waveguide port. S11 parameter is linearly higher than 1 when I use open (add) space boundary condition. Physically not meaningful due to energy conservation. But, when I use open boundary conditions, this time I obtain an error (...)

## CST Microwave Problem - High reflection problem

Hi everyone, I have a problem. I am simulating a structure w/ a waveguide port. S11 parameter is linearly higher than 1 when I use open (add) space boundary condition. Physically not meaningful, energy conservation. But, when I use open BC, this time I obtain error as: " Inhomogeneous material at (...)

## The basic difference between Open and Open add space boundary conditions in CST

Hii Anyopne tell me what is the basic difference between open and open add space boundary conditions in cst Microwave Studio??? When i use open boundary condition then i m getting different result in comaprison to open add space (...)

## semi-infinite boundary condition in CST

Hello fxth, What do you mean by semi-infinite?? Is it like finite dimension in say X-axis and infinite in Y-axis? For this use periodic boundary conditions in ?Y axis, keep rest open add space. if you go to dispersion in material properties of any particular material, there is user defined list. you can check the dielectric values and (...)

## CPW excitation problem in CST

Hi, everybody, I encount a problem in cst when I try to excite the grounded CPW. When I set the boundary condition of the port side to be PEC, the port field of CPW looks right. But when I set the boundary condition of port side to be open, then the port field distributuion of the CPW (...)

## problem simulate near field in MWS CST

hi i think you need to make sure your near field monitor is inside the simulation domain specified by you using boundary conditions you can manually add space or use open(add space) boundary condition to resolve this problem i hope this helps regards

## Define boundary condition in CST for circular patch antenna

Hi zhiweisim use open (add space) boundary condition for all directions and hopefully your problem will be resolved regards shahid

## CST-Parallel symmetry planes

U need to use open ad space in the boundary condition. In your case the boundary is touching one of the metal surface ^.^

## define waveguide port for coax cable in CST

Hi winglj Another better way to reduce calculation time is to assign first in the Background Properties Lower Z=5 or10mm then in the boundary condition Assign Zmin=open. And only after this pick the coax face and define the Port. PL

## Can see the back lobe levels of patch antenna in MWS 5

Hi all, I am simulating a p@tch antenna in cst MWS - 5. All the results are fine.However I am unable to see the back lobe levels. In the back side it is giving a zero field !! . I have included open + add space for zmin boundary condition.Any ideas as to how I can do the back lobe calculation ? Thanks for (...)