Explore | Design | Export.

Antenna Magus' huge searchable database of over 250 antennas can be

  • Explored - to choose the optimal topology
  • Designed - to meet the system criteria
  • Exported - to seemlesly integrate with your design workflow
  • Antenna Magus workflow:

    What makes Antenna Magus different to other antenna design software?

    Antenna Magus is actually nothing like any other antenna design software product. It takes on a completely new approach to designing antennas. You may have seen other "Antenna design software" tools that are intended to assist engineers with antenna design but aren't really that useful since many of them consist of a very small selection of known antennas that can only be designed for a limited set of objectives over a small range of input parameters.

    Another common misconception is that analysis software and antenna design software are the same thing. "Design" and "analysis" are in fact two completely different concepts which should not be confused. Analysis forms an important part of the antenna design process, but the design process consists of a number of steps to be completed before the antenna analysis and optimisation can start.

    An Antenna Magus design case study:

    Case study 1: 11 GHz Reflector antenna feed with dual polarisation

    All antenna engineers are familiar with a number of antennas. For some it is only a handfull while some seem to have unlimited knowledge of different antenna types and an in depth understanding in the underlying physics of how they actually work. The bottom line is that not one person can know everything about antennas and that hands-on experience is probably the most valuable commodity in the field of antenna design. When faced with new design requirements most engineers will start with antenna topologies that they are familiar with.

    Antenna Magus has revolutionized this first step in the antenna design process by broadening the scope of possible antennas that would be considered during the initial phase of design.

    Let's look at a typical case where an antenna engineer or consultant needs to design an antenna for a specific system or application. Assume the client supplied the following specifications:

  • Design a feed for a reflector with F/D of 0.6
  • Dish diameter: 400mm
  • Frequency: 11 GHz
  • Total gain: 25 dBi
  • Feed antenna -10 dB beamwidth: 80 degrees
  • Dual linear polarisation

  • For this specific example, the engineer might enter "reflector feed" and "dual polarisation" in the Antenna Magus search dialogue, which would return a selection of antennas that match each combination of search terms. The following five antenna candidates are returned by Antenna Magus as potentialy suitable antennas adhering to both search terms:

    Reflector feed antenna options - design case study1

    Without any detailed understanding of any of these antennas, the engineer can use the "info doc" feature to gain a very good overview of each antenna. Antenna Magus describes each antenna in a well summarised document or "info doc" outlining basic specifications, adavantages and disadvantages of the antennas that might be worth considering for the design. It would become apparent that the Printed four arm sinuous antenna is more suitable for wide band reflector applications where narrow -10dB beamwidths are not required. Further insight that might be gained is that the Coaxial cavity horn is a great reflector feed as it provides a broad, almost-uniform illumination but it is better suited to deep reflectors with F/D < 0.35. After eliminating these two antennas the engineer can then further investigate the other three options suggested by Antenna Magus:

    Reflector feed antenna options - design case study1 Three potential reflector feed antennas that will be investigated in this case study

    Information on these antennas can be compared using the Antenna Magus "compare" option in the information browser. A "side-by-side" view in which information is arranged and displayed as shown below:

    Side-by-side compare of three antennas Side-by-side comparison of three antennas' information documents supplied by Antenna Magus. Click on image to enlarge.

    Next the engineer designs each of the antennas in Antenna Magus as shown in the following screenshots:

    Axial-choke antenna design in Magus  - design case study1 Axial-choke conical horn antenna design. Preview taken from Antenna Magus software.
    Diagonal horn antenna design in Magus  - design case study1 Diagonal horn antenna design. Preview taken from Antenna Magus software.
    Corrugated horn antenna design in Magus  - design case study1 Corrugated conical horn antenna design. Preview taken from Antenna Magus software.

    Note that in most cases Antenna Magus allows the user to design antennas for different parameter objectives like gain, beamwidth and frequency. The corrugated horn can also be designed for 10 dB beamwidth which was specifically implemented for reflector feed design. The Axial-choke antenna can also be designed for "main beam flatness" which is often a requirement for reflector feed design as a flat main beam with a steep drop-off illuminates the dish uniformly with very little spill over.

    Although Antenna Magus has no 10 dB beamwidth design option for the Axial-Choke and Diagonal Horn the quick estimated performance feature offers an alternative solution. Antenna Magus' quick analysis feature (called estimated performance) is ideal for doing a few rough simulations to find out which design comes close to the 10 dB beamwidth specification, seeing that in this case a single simulation takes only a few seconds.

    The following graphs show the estimated performance for all three antennas.

    Axial choke gain graph - design case study1 Axial-choke antenna estimated E- and H-plane gain
    Diagonal horn gain graph - design case study1 Diagonal horn antenna estimated E- and H-plane gain
    Corrugated horn gain graph - design case study1 Corrugated horn antenna estimated E- and H-plane gain

    The numeric estimated performance data can also be exported to compare the results on the same graph as shown on the next image, where the normalized H-plane 10 dB beamwidth of all three antennas are compared. So far it seems like the Axial Choke antenna will be the best option as it has a nice flat main beam with steep drop-off which is ideal for uniform reflector illumination.

    Reflector feeds overlayed to see 10dB beamwidth - design case study1 Comparison of 10 dB beamwidth of three antennas' estimated performance

    Once the engineer is satisfied with his/her designs, the final step is to export the "ready-to-run"designed antenna models to FEKO and/or CST MICROWAVE STUDIO where the antenna elements can be further designed and optimised to meet the given requirements.

    Export to FEKO and CST - design case study1 Example of the Axial-choke conical horn antenna exported to CST MICROWAVE STUDIO and FEKO.

    The ready to run models exported by Antenna Magus at the click of a button would save an engineer several days (if not weeks) that would have been spent building and adjusting simulation models to be ready for accurate analysis and optimisation.

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