Aksonx2

No I want to optimize and analyze CST for ...I don't know what to call this antenna, "Double helical dipole". Portable radios often use these antennas for the 145/433 MHz band. But I can't find a calculator or a mathematical or practical justification for calculating such an antenna anywhere. The monopole can be found. But I can't find a double helical dipole. And by the way, indeed, then you can simulate a director antenna with such a vibrator, a very interesting question. The attachment contains a diagram of the manufacture of such an antenna for walkie-talkies

Good time. I'm ashamed to admit that I have a low level of knowledge in 3D modeling. Please help me how to make a model of a "helical dipole" antenna at a frequency of 433MHz.

Good afternoon. Please tell me about optimization. What is the correct algorithm? set all the parameters at once (impedance, SWR, etc.) Or can you first optimize the antenna by SWR and then by antenna impedance? Are there any manuals?

P.S. Don't forget to click "Apply" !!! Simulation - Setup Solver - Acceleration - check Hardware acceleration - OK - Apply !!!!! - close or start

I am using an Nvidia GTX1070 home video card. Officially, such video cards are not supported in the CST program. I did not conduct an experiment with Radeon video cards and it seems that they do not all support solvers. 1. The NVIDIA GPUs that fulfill the following requirements may be enabled for simulations: • capable of running CUDA 9.2 code • at least 4 GB of free memory To enable such GPUs, set the environment variable CST_HWACC_ALLOW_UNVERIFIED_HARDWARE = 1. Then all eligible installed and visible NVIDIA GPUs will be considered for computation. 2. Verifying Correct Installation of GPU Hardware and Drivers As a final test to verify that the GPU hardware has been correctly installed, the following test can be executed: Log in to the machine and execute the HWAccDiagnostics_AMD64 program found in the AMD64 subfolder of your CST installation (Windows) or in the folder LinuxAMD64 on a Linux system. The macro "Check GPU Computing Setup" in the Solver macros performs exactly this check.The output of the tool should look similar to the following picture if the installation was successful. -- (image CUDA2.JPG) 3. GPU Computing needs to be enabled via the acceleration dialog box before running a simulation. To turn on GPU Computing: 1. Open the dialog of the solver. 2. Click on the "Acceleration" button. 3. Switch on "Hardware acceleration" and specify how many GPU devices should be used for this simulation. The specification of the number of devices is per solver (e.g. if DC is used) -- (Image CST CUDA.jpg) - Step 3 should be done in each project separately. it must be done for each project separately - If you did everything correctly, then when you start the simulation, a message will appear in the "messages" section that the video card has been identified and the on-demand standby status (LAZY). During the calculation, you can see the processor load of the video card through the task manager. -- (Image CUDA3.JPG) - Details on using video adapters in the CST program are in the "GPU_Computing_Guid" file in the attachment. I am using version 2024 SP5 GPU_Computing_Guide_2021.pdf

A miracle of Chinese industry. I built a home computer for HFSS. Dual-core motherboard. Two Xeon E5-2680v4 processors, 32 gigabytes of RAM. The GTX 1070 graphics card. I prescribed the points as in the instructions so that the program determines other video cards for calculation using CUDA. Everything works super well. It counts much faster than I had before with 4 threads

Thanks !!! now there is a question of upgrading the computer. An error came out that there is not enough RAM (8 GB installed). If anyone has experience, tell me what configuration - processor and video card to buy so that it works well. Not Nvidia Tesla :))). I tried it on a friend's laptop with windows . It turned out to run CUDA . Thank you. maybe there is some kind of CUDA performance program?

Have a good time, everyone. Please tell me what parameters should be entered when calculating the antenna to calculate the antenna if . Is it mounted on a carbon fiber base? Does carbon have characteristics similar to metal for calculations in the program?

how would I do: - plan of the area (park, stadium, sports ground, monuments) - according to the plan, where it is allowed to install access points (permission from the city administration or building owners, installation on lighting poles or making new supports for access points) - weather conditions (climate, sun, humidity. Installation outdoors or indoors) Even protection from birds (bird shit). This seems funny, but I had to make protection from crows on the GPS antenna. The bird loved to sit on the antenna and the signal was of poor quality. I taped toothpicks onto duct tape to stab the crow's ass. - Based on such data, you will already have a plan for where you can install access points and where you can’t. - decide how many people you plan to simultaneously connect to access points. Will there be a limit on access speed? And they will. Or which billing to deploy. Otherwise, your entire network will be destroyed by those who like to use torrents for free. - If this is a stadium, then there are definitely corporate-class access points. A simple SOHO access point will not be able to serve more than 10 people. - Do you need seamless roaming between access points (for example, a park, a client walking or riding a bike) This will give you the hardware requirements. From the site plan you will understand where access points can be placed and where not. And approximately the coverage of the WIFI network. - and here we need antennas or not. May be better to place access points in a star topology P.S By the way, the issue of electricity supply is also important - laying electrical power cables will be prohibited and something will have to be invented

First you need to decide what channel speed you need. How many clients do you plan to serve at the same time? And then think about antennas.

interesting antenna on the 0.88G. Share antenna sizes? Or project if modeling in CST Studio

Where can I find such a dialectical polystyrene? Is it suitable in a building materials store? I'm sorry for the stupid question, as I understand it, you need a material with certain characteristics of dialectical permeability?

changed the connection location and replaced the wire with strips in the connection. If you have free time, can you check me out? I'm still in CST. According to your articles on the forum. A little later I will put optimization 1320patch.cst

I fly this antenna now at 1320 MHz. I suggest you stay that way. Cut less:))))

I apologize for the arrogance:) do not share the project file? In order not to waste your time, I will play with the size of the antennas myself.