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161 Threads found on edaboard.com: Cst Pattern
In my opinion, the Negative step (step 2) is really not necessary. If the solids you draw are all PEC, just import them into cst, set the background material to be free space, set the objects imported to be PEC. Then cst is "smart" enough to know that the fields needs to be solved are in your "Negative" region. Similar thing happens when using HFSS
Hi, I would like to import a pattern diagram in cst and to generate a array antenna with it. Is it possible? Thank you in advance
To desigh the patch antenna You can use 2.5D simulator (MWO, Sonnet), or cst-MWS if Your structure has many layers. To Yagi-Uda ... usually the formulas from Balanis book gives the good result, but if You want to simulate it, try to use SuperNEC or cst-MWS. With responce, Kit-the-great
Hi, Can anyone give me tutorial/manual file of Microwave Studio of cst?
Hi Eirp, 1.5G? It must be quite a big structure! 8O What were your mesh settings? I noticed that cst uses a lot more mesh cells if you haven´t got a planar structure (such as a curved body of an aircraft) I had to use staircase mesh for the imported sheet body. Till now, I still haven´t got the hang of disabling automatic mesh
For 80% accuracy you can use PCAAD V5 (just 450$) if you need more accurate 3D design use cst (MWS)It more user friendly for 3D then Ansoft (HFSS) For 2D printed antenna use ZELAND PL
Hi all! I'm just curious if it's possible to disable the farfield approximation in farfield display (I know this sentence is a bit misleading :) I mean the line Approximation = enabled (kR >> 1) I've tried to set the reference distance in "Plot mode" but nothing.. Help says: Reference distance: Set the radius of the virtual sphere
Hi all! I need to design a wideband rectangular microstrip p atch antenna. The required resonance frequency is approximately 900 MHz, the substrate is Air (Er=1). The simulation tool is cst-microwave. Attached please f
The green line in far field plots in cst is the backlobe level of the radiation pattern you can see it in a polar pattern of horn or planar array there is low backlobe but if you have two sidelobs obviously they are marked with the green line
Hi, i am simulating planar antennas which should result in unidirectional farfield but so far all i got are bidirectional. i assigned open boundary for all except an open added boundary for Zmax. can somebody please help me to fix this problem. thanks a lot. abti
Maybe you can use FEKO or cst. You can solve large problem by them.
I have a question: How MWS calculate the farfield? As I understand, I need to integrate the 3D fields on open boundaries by Huygens method to obtain the radiation pattern, but when I try to export the corresponding field to file and integrate this field by my own program, I receive results widely different than calculated by MWS. Why MWS calculat
You should consult the cst MWS documentation on "Vertical and Horizontal Polarization". It is explained well in that section. -svarun
Hi all, I am building an antenna array based on microstrip p@tch antenna. I am now looking at a 2element array. Before I design a power divider, I want to simulate the array using two waveports. To study the overall pattern, I want to excite both ports simultaneously. Is it possible to do in cst MWS ? Thanks for your time. -Arun
Hey, I've got a problem when using a discrete port in cst Microwave Studio 5.1.2. It's a pretty basic thing, I think. I want to do a transient analyses for a simple monopole structure. So I choose a discrete port between the monopole and the PEC surface. In the manual they state that such a discrete S-port has to be small enough, at least 1/1
Hello: usually the gound on lower side of the substrate is of thickness .03-.05mm. But if in the tutorial of cst "rectangular patcha antena", ground is about 3mm. It seem that thickness of ground plane has no effect on the result or i am missing somthing. Another quesiton: What should be the length of coaxial feed in cst
I have tried to simulate in cst but S11 is totally different see the cst design attachment. 50ohm coaxial cable is used to feed on other side of ground plane. Parameters Disk radius:12.5mm with patch thickness of .4mm FGap:.4~.7mm Ground plane:100x100mm
Hi, I have read recently about wave plane in cst and its benefit to drive linear or circular polarization signal. I would like to know when to use wave plane and when to use waveguide port? I'm fully confusing about this. My goal to know what I have to use with waveguide and Microstrip antennas to get s11, far field and behaviour of linear and
Hi, Any idea of the meaning of left polarization and right polarization in the far field results in cst? They are almost the same for different antenna structures.
hi, i'm new in designing antenna, i work on project to design a patch antenna for GPS, and using cst Microwave studio, i just want to know how to calculate the axial ratio. and want to know how to get radiation pattern for farfield or know the zeros and max. of radiation because after i run simulation for far field i didn't understand the graphs i
how can we know the polarization of an antenna? Is the polarization for all microstrip patches are the same? So, the cross-pol can be done by rotating 90 degree of the transmitting or the receiving antenna? Thanks all Polarization of antenna is given by E field distribution or electric currents (they produce E fi
Hy, i need some help with finding the phase pattern of an antenna simulated by cst. 2. does the phase of the pattern change rapidly throw the phase of the antenna ? thanks in advance
hello All, My problem regards E-field probe signal results under different mesh settings. I have an antenna model with an E-field probe set in its far-field region. In my opinion the antenna is well meshed, i.e. the mesh "sees" all the important parts. As I thicken the mesh density the E-field results change. Has anyone encountered this
Hi fishyxl I think the hfss is more accurate in calculation S parameters in waveguide structure . When I simulation an antenna , I can get accurate pattern in HFSS and cst-MWO ,but in calculating S parameters ,HFSS is better than cst . Regards! caocao
that's because the simulation boundary is to close to the dipole with respect to the wavelength. it is better to use the open + add space boundary when simulating antennas in free space. cst will set a proper simulation boundary for you best regards
Hello someone can help me for this problem? How can one post the option of the Farfields (radiation pattern; gain and directivity) of antenna in cst? Thanks
hi all,how i plot many polar pattern at different frequencies at cst 5,also how i extract co and cross polarization regards
cst calculates the gain as the total received power so it includes both Ex^2 + Ey^2. if you need the gain of horizontal polarization then select Phi pattern, and vertical select theta pattern (or vice versa according to your antenna orientation) if they are in dBi, you are right, you should add 3dB to calculate the power received by a CP (...)
Hi KhangKhang Some how u have to manage around 50ohm while changing the width, height etc. In my option as far as cst is concern, to normalize to 50ohm would be technically sound but not good enough. As an example if u normalize to 50ohm and if u manage to get port around 50ohm will give you different results.
hi all,i so weird that cst not support point sources as we could simulate large arrays(100*100),could cst have that? also how can i make wave guide with cos^4 pattern in cst?,in other word could i control the feed of waveguide if i use waveguide antenna and waveguide port? i listen to u regards
hi all I have a design of an UWB amplifier and a patch antenna connected : i want measure the radiation field in cst can you give me a step by step guide to implement this ?
Dear all, Could anyone has experience using cst explain me , how to make magnetic and electric wall in such a case. I make single patch and want to investigate infinite sequence array by using mirror concept. Put E wall in front of it and behind it, and H wall on the right side and left side. But in cst we cant make parallel symetric plane
hi before starting simulation in cst MWS we define different monitors for our desired quatities. for example if we are interested in radiation pattern at 1.8ghz we define far field monitor at 1.8ghz and after simulation we can see the desired ratiation pattern my question is it possible to extract the 3D radiation (...)
hi all,i have little question of cst how can i polt the field of any antenna at any position(not near field nor far field) i make horn and put probe in my desired postion ,so how can i measure field I(i.e. how could i rotate the probe to measure the field pattern ) i wait so fastly ur reply
some one please explain how to understand the far-field from simulation in cst and what the relationship between directivity nd efficiency thanks
hi, i've design a circular patch microstrip antenna with narrow slot for 2.4GHz circularly polarization..the antenna that i design is right hand circular polarization and using coaxial feeding.. the Q is how do i know that my design is the correct one by using cst? what i need to determine is the radiation pattern, the s11 parameter < -10dB, the b
hi all,could cst simulate large array of isotropic elements regards
Dear all While Simulating 3 antennae by cst which have three separated ports cst every time excites 1 port while the other ports are terminated. But to see the overall radiation pattern due to all antennae we need all ports be excited simultaneously. what can I do other than using a power divider?
i want to share information i got today from my friends it is manual how to get co and cross polar using cst
HFSS,cst and IE3D
hello guys... I need your help and suggetions.. .please... I am doing a project on UWB antenna and I have been trying to recreate the designs (for the past 2 month) of UWB rectangular /Cicular monopole on cst. Both my design and the journals were I took the dimention from are enclosed on the respective zip files, I have read the help files but
When I tried to run my simulation, the cst give me error that there are parallel symmetry planes and the farfield can't be processed. Anybody knows what is the problem?
Hi. I´m simulating a offset dish, i was wondering if cst is capable of calculating the focal point of the antenna? Using cst 2006. Best Regards.
this may sound to be simple but there is some confusion regarding polarization status of antennne in cst. 1:how to determine that antenna is linearly polarized or circular or elliptical? 2: if its linear then how to determine whether its vertical polarized or horizontally polarized? 3: if its circular or elliptical polarized how to determ
how about in cst??how to find it??
hello everyone, anyone know how to calculate the efficiency in percent using cst? hope u all can help me. regards, kyg
hi all, can we model a human body part with a tumor using cst microwave studio,how can we do the near feild pattern measurement of an antenna using cst
anyone tell me how can i plot the radaition pattern(polar plot) for comparison purpose from HFSS to cst ? i m unable to import result from HFSS to cst for radaition patern (polar plot) plz hep me
Dear all How can I see antenna pattern and antenna structure simultaneously in cst(Microwave Studio)?
We know that the radiation pattern of a patch antenna fed by a coaxial cable is monopole-type pattern. I already got this kind of trivial example from cst help. Then, I just scaled it to make the antenna resonate at high frequency, let's say around 50 GHz. Everything seems quite simple, but the radiation patterns at (...)