Simulation of antenna in CST Microwave

[Aksonx2 16]

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

Edited November 26, 2024 by Aksonx2

[Admin 2628]

I would also need other sizes for this...

[Admin 2628]

In this tutorial you will learn how to simulate antenna devices in CST-Studio...https://space.mit.edu/RADIO/CST_online/mergedProjects/EXP_HF/examplesoverview/patch_antenna.htm

[Aksonx2 16]

Good time. I found an antenna model where two cylinders are connected by a separate element . A smooth curve is obtained. I can't find how to do this in the program. How can this be done?

Edited February 5 by Aksonx2

[Admin 2628]

,,,go to Picks>Pick Face and...

 

,,,go to Loft>make 0.25>

[Aksonx2 16]

Thank you very much, everything worked out. Can you tell me the characteristics of PET-G plastic for calculating simulation in the program? I understand that the Epsilon , Mu parameter is necessary, and some other important parameters must be specified. A search in Goggle gave an approximate parameter Epsilon = 3.1 for PET-G plastic at temperatures up to 180 degrees Celsius. Moxon designed an antenna in a plastic frame made of PET-G, the antenna turned out to be with a VSWR down by 50 MHz from the calculated one according to the program.

[Admin 2628]

Dielectric Constant

1kHz -2.6

1MHz-2.4

 

[Aksonx2 16]

On 07.02.2025 at 7:34 PM, Admin said:

Dielectric Constant

1kHz -2.6

1MHz-2.4

 

Thank you very much when I wrote to you, I also checked this parameter and the program actually showed the same value of the material = 2.4. I'll try to make a new calculation at 950 MHz instead of 915 MHz. If necessary, I will write about the results. Now there is an opportunity to work with a 3d printing designer. I'm exporting the antenna model to him in "step" format file. The designer adds plastic models to his program and sends them to me. It turns out to be a ready-made model, taking into account all the details.

This opens up interesting possibilities in the program. It might be possible to make something similar to a Fresnel lens

Edited February 9 by Aksonx2

[Aksonx2 16]

CST STUDIO SUITE 2025.01 SP1 

https://cloud.mail.ru/public/VzVL/UGgXdTaou

[Admin 2628]

1 hour ago, Aksonx2 said:

CST STUDIO SUITE 2025.01 SP1 

https://cloud.mail.ru/public/VzVL/UGgXdTaou

,,,what is the password...???

[Aksonx2 16]

22 minutes ago, Admin said:

,,,what is the password...???

Sorry!!! Password: 1progs

Edited February 19 by Aksonx2