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,,Heinkel,you are from Spain...??? ,,,it means you met zero13 wireless.net...!!!

Okay Clanon, I'll try to do this too...!!! Yes, that's it.... RondCone.cst

,,,another version with different dimensions...

Yes, it seems like they should be larger in diameter...!!! ,,,now it is 20 mm...

The four-arm helical structure antenna is composed of four helical arms, and the length of each is an integer multiple of a quarter wavelength. The current amplitudes of the feed ends of the four spiral arms are equal, and the phases are sequentially different by 90°. It has a cardioid pattern, a good front-to-rear ratio and excellent wide-beam circular polarization characteristics. It is very suitable for use as a receiving antenna for a satellite positioning system. Parameter: Antenna impedance: 50 ohms Working frequency band: 1.4 ~ 1.68GHz Size: 23mm*78mm*1.6mm Weight: 8.4g Antenna connector: SMA (male)

There are two types of antennas, RHCP, and the LHCP. Don’t be overwhelmed, it’s easy, we’ve outlined the basics below. RHCP antennas are known in full as Right Hand Circular Polarized antennas. LHCP antennas are known in full as Left Hand Circular Polarized antennas. Sometimes, they are both known simply as Circular Polarized (CP) antennas. Due to its polarized nature, this type of antenna will reduce any radio interference by a process known as multipathing. This blocks out unwanted radio signals and can give a much cleaner signal. For which below I was looking to do a simulation of the antenna after the Iulian Rosu site ... ??? https://qsl.net/va3iul/Antenna/Printed_and_Microstrip_Antennas/Design_Ideas_for_Printed_and_Microstrip_Antennas.htm

No, I don't think so, but I'll try to do a simulation of what this type of helix is like. What frequency are you interested in??

Go to template based post processing and select far field from there and then go to results and calculate electric field for theta and phi and find the phase difference which actually gives the polarization whether linear, circular or elliptical.

Anjana, for what you want, try adding 9-10 more passive elements...!!!

,,,for anyone who wants to optimize this antenna... sunflower pcb.cst

Ultra-wideband UWB Sunflower Antenna Basic parameters Frequency range: 2.8GHz-11GHz Polarization mode: linear polarization Rated gain: 3.8dBi Return loss: 10dB Power capacity: 5W Connector type: SMA-K Mechanical parameters: 30 mm X 42 mm Not include Connector Direction sensitivity Omni

AppCAD_setup.exe ,,,for wave port,on YouTube,search "waveguide port creation tutorial in CST"

Another option...

I followed this forum and tried to do a simulation for this frequency (L-band 1500-1700 MHz)....for last mystery of maritime communication-satellite Inmarsat!!! https://www.radioscanner.ru/forum/topic50990-11.html

,,,,where did you get this project from...???

355.....594 mm

,,,must add ground to coaxial cable...!!!!

This antenna is designed for use on mobile and stationary objects. Antenna works with any devices in the range of 790÷960/1700÷2700 MHz (USB modems, repeaters, amplifiers, etc.). Thanks to a wide band antenna capable of operating in the most skorostnyh the mobile communication standards, with a maximum Internet speed up to 300 MB/s For the implementation of the MIMO mode, it is recommended to use two such antennas. Light weight, great aerodynamic shape and use of rare earth magnets in the magnetic system allow to keep the antenna on the roof of the car at speeds above 150 km/h! The electrical characteristics of the antenna Magnita-1 Operating frequency range, MHz 790-960/1700÷2700 Gain (excluding cable loss, when placing the antenna on the roof of the car), dBi 2÷4 / 6.0÷7.0 Gain (excluding cable loss, when placing the antenna in free space), dBi Of 2.0÷3.0 The width of the days in H-plane, degrees 360 Days width in E-plane 3dB hail 15÷45 The elevation angle of the main maximum of the radiation pattern when placing the antenna on the car roof, C 5÷25 Input impedance, Ohm 50 SWR in the frequency range, not more 1,6 Permissible power watts 10 Polarization vertical The mechanical characteristics of the antenna Magnita-1 Weight with cable g 240 Dimensions without cable, m 0,10 x 0,10 x 0,08 The force of attraction of the magnetic system (when the thickness of the metal roof of the car - 0.7 mm), N 50÷55 Connector SMA-male / on-demand The material of the radiator tin tin Material samango casing ABS + polycarbonate

I think the base is magnetic for attaching to the hood of the car...!!!

I don't think so, anyway the base cone is electrically connected to the reflector.

,,,,here it is.... klanon.stl

,,,for those who want to optimize this antenna... Magnita.cst

,,,yes,it could be covered with a plastic... ,,,sorry for the mistake, D1=70 mm

D1=99 mm ,,,and because I saw that you like square patches...

'PATCH' irradiator for an axial-symmetric antenna with a diameter of 67 cm and f/D=0.43 for receiving signals from the satellite AO-40