Radio Frequency
Documentation

CENOS Radio Frequency simulation software.

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Product
Documentation

CENOS : RF is a simulation software for radio frequency. It helps engineers save a significant amount of resources on prototyping by replacing physical tests with computer simulations.

In this documentation page, we will learn what CENOS : RF simulation software is capable of and how you can benefit from using the software in your product development processes.

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Link to: Radio Frequency overview

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Overview and walkthrough

Link to: What makes a good CAD geometry

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What makes a good CAD

Link to: Manual meshing tips & tricks

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Manual meshing tips & tricks

Link to: What RF simulation needs from your eCAD file

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What RF simulation needs from your eCAD file

Link to: Port definitions in CENOS

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Port definitions in CENOS

Link to: FreeCAD basics for RF geometry

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FreeCAD basics for RF geometry

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Geometry roles

Link to: Inverted-F Antenna simulation setup

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Inverted-F antenna simulation setup

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Folded dipole antenna simulation setup

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Helical antenna simulation setup

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Patch antenna simulation setup

Radio Frequency
Use Cases

The importance of placement studies in antenna design

The importance of placement studies in antenna design


How does human body interfere with your devices?


Key takeaways from RFID Journal LIVE!

Key takeaways from RFID Journal LIVE!


Make engineering simpler with simulation software

Make engineering simpler with simulation software


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Frequent
Questions

CENOS primarily provides software that is designed for ease of use, empowering our customers to run their own simulations with confidence. Alongside the software, we offer high-level customer support to ensure a seamless experience.

For customers who require additional assistance, we also offer a Premium Support service. Through this service, our team can collaborate on simulation projects, including running simulations on your behalf to address workload challenges or assist with new designs.

No, the software doesn’t create designs for you. Instead, it acts as a robust simulation platform that helps you test and perfect your own ideas.

This means you can experiment with numerous design variations virtually, ensuring you arrive at the best design without the expense and delays of building physical prototypes.

CENOS simulations are highly accurate, with results closely matching real-world outcomes when the simulation setup mirrors the real-life setup. The precision of your results depends on how well the simulation parameters align with the physical conditions.

All CENOS users, including companies like Bosch, Trustpoint and SES RFID, have validated the software’s accuracy through their own tests. You can explore some of these validation studies here [1] [2] [3] [4].

Have questions?

Don’t hesitate to contact our customer support.

support@cenos-platform.com

Europe
+371 27819253

Americas
+1 614 705 0681

Full list of features

Geometry input and processing

  • CAD loading (.step, .iges formats)
  • Gerber file import for PCB-based RF designs (Gerber X2 format)
  • Templates for commonly used antennas
  • Automatic flattening of thin objects for geometry optimization
  • One-click CAD re-loading preserving the whole case assignments, materials and settings
  • Parametric study enabling the loading of multiple CAD/eCAD files within a single simulation setup
  • Native geometry loading from open-source CAD editor FreeCAD
  • Parametric geometry modification (powered by the native integration with FreeCAD)
  • Automatic air domain (enclosure) generation
  • Geometry scaling
  • Easy roles assignment to geometry objects (ground plane, substrate, trace, etc.) with associated automatic physics pre-settings

Simulation types and controls

  • Support for single frequency simulations as well as frequency sweeps
  • Options for fast frequency sweep or discrete frequency sweep depending on accuracy and speed requirements
  • Ability to manually increase FEM element order up to 3rd order to improve accuracy when mesh size is limited by available RAM
  • Customizable Far-Field step size for precise radiation pattern calculations
  • Export results in Touchstone format supporting both Real/Imaginary and Magnitude/Phase representations

Physics settings and material properties

  • Support for periodic arrays, enabling simulation periodic structures with appropriate boundary conditions.
  • Ability to configure phase shift between ports or elements, essential for phased arrays and beam forming applications
  • Definition of complex impedance
  • Definition of lumped elements for modeling passive components
  • Library of materials, ability to create and save your custom material
  • Automatic meshing, interface for manual refinement of mesh parts

Results analysis

  • S-parameters with magnitude and phase representation
  • VSWR
  • Impedance with real and imaginary components
  • Smith chart
  • Transmitted and radiated power
  • Renormalization of results to different reference impedance
  • Radiation patterns visualization
  • Visualization of axial ratio to evaluate polarization characteristics
  • Electric and magnetic fields
  • Current density distribution on conductors
  • Near-field analysis
  • Periodic array configuration tool
  • Custom cuts (cross-sections) for all fields for tailored analysis

Additional results export options

  • Automatic pdf report generation
  • Data export in a spread sheet (csv format)
  • Export results in Touchstone format

Add-ons for calculation effectivization

  • Simulation Manager – for automatic (batch) calculation, parametric studies and management of shared computation
  • License Server – for multi-user floating license management and off-line work in enterprise environments
  • Results Viewer – for interactive visualization and analysis of simulation results without calculation option

Release Notes

v4.1.0 (June 21, 2025)

Features:

  • Added support for parametric study when loading multiple CAD files
  • Implemented support for geometries with floating faces
  • Introduced results renormalization functionality in results viewer

Improvements:

  • UI now shows loading progress for large cases
  • Improved error messages during meshing of periodic arrays
  • Added support for FreeCAD 1.0.0, which will be automatically downloaded for new users
  • Added option to save files with or without results

Bugfixes:

  • Fixed issue where physics changes triggered mesh update
  • Fixed unexpected closure of results connection
  • Fixed issue where adding lumped elements or discrete ports deleted the existing mesh
  • Fixed case opening failure in CENOS following license data check
  • Current density and electromagnetic fields are now displayed in solids with real conductive materials
  • Fixed incorrect positioning of current density vectors in specific cases
  • Parametric study cases can now be removed after a failure

v4.0.1 (April 16, 2025

Features:

  • New button to compress log files added to the File menu.

Improvements:

  • Improved stability of the Preview window interaction.
  • Updated the default values in automatic meshing to better suit wire antenna geometries.
  • Improved validation for input values of passive components.
  • Improved recognition of FreeCad datasheet rows in CENOS.
  • Updated display of wavelength resolution limit.

Bugfixes:

  • Fixed issue with name editing for discrete ports and lumped elements.
  • Fixed irregular meshing in specific geometries.
  • Fixed PDF export issue for single-frequency simulations.
  • Resolved issue with frequency display in 2D graphs where values remained static regardless of the actual data.
  • Fixed issue where periodic array results were not refreshed when reopening a case for the second time.
  • Fixed visualization of Electric Field vectors.
  • Fixed issue with missing prefix in axial ratio results.
  • Fixed automatic meshing update with periodic arrays tool.

v4.0.0 (January 7, 2025

Features:

  • Implemented periodic structure support for Phased Array simulations
  • Implemented Fast Frequency Sweep

Improvements:

  • Changed solver from GetDP to NGsolve for greatly improved stability and simulation speed
    • Removal of parallel process calculation
  • Updated Thin PCB detection when importing CAD file
  • Excitation type removed
    • Simultaneous excitation has been eliminated in favor of postprocessing of sequential excitation results, but can now be done in postprocessing
  • Implemented lumped element losses
  • Added active S-parameters charts section in all multiport simulations
  • Implemented Hard Stop to immediately stop the simulation process
  • Model outline can now be scaled and repositioned in the radiation patterns window
  • Improved error message handling and user experience

Bugfixes:

  • Fixed issue with multiple coaxial ports
  • Fixed issue where phase shifting did not work in coaxial port cases
  • Fixed incorrect Gain values in multiple port Simultaneous Excitation cases
  • Fixed issue where airbox domain is eliminated when replacing CAD geometry
  • Compressing the case with results is disabled if they do not exist
  • Fixed issue when sending the geometry from FreeCAD to CENOS if the case has not been saved
  • Improved the case saving process to prevent corrupted files
  • Adjustment in case warning saved when closing case
  • Geometry variables can now be updated in the physics from the first attempt
  • Parametric study now can be stopped
  • Fixed issue where the ‘Import CAD’ button in CENOS did not work when creating a case using the Geometry Editor approach
  • Combined results of a parametric study can now be opened after deleting a subcase
  • Fixed impedance normalization in Smith Chart
  • The frequency step change no longer affects the mesh
  • Fixed the overlap of scales in the electric/magnetic field
  • Fixed Kernel error due to missing VC++ redistributables
  • Fixed issue where recalculated results would not open correctly when one of the ports was removed

v3.4.1 (July 29th, 2024)

Bugfixes:

  • Results in cases that had parametric studies run in previous versions can now be opened

v3.4.0 (July 23rd, 2024)

Features:

  • Included Smith Charts in the built-in results section under the Charts tab

Improvements:

  • The Charts tab of Python Plots have a new and improved design

Bugfixes:

  • The Smith Chart in the extra_results folder has been removed in favor of the Smith Chart in Python Plots
  • Faces with applied Conductor roles have their edges refined again if there is a face with a Patch role applied in close proximity

v3.3.1 (July 2nd, 2024)

Bugfixes:

  • Mesh refinements no longer get reset if the user changes a physics parameter
  • Fix opening of cases made prior and including v2.1.1 where the message “Preprocessor key ‘geomRoles’ not recognized” appeared
  • Fixed case opening made prior to RF v2.1.1 due to missing mesh data

v3.3.0 (June 18th, 2024)

Features:

  • Added Custom Air Domain padding definition in the Physics section
    • It is now possible to define the padding from the model in all XYZ directions
    • It is now possible to define a custom frequency at which the necessary padding is added

Improvements:

  • User now needs to check mesh if physics parameters have changed and has used manual mesh refinements. Otherwise, automatic mesh will be regenerated on pressing RUN

Bugfixes:

  • Fixed issue where CAD reloading would not delete missing solids from selected roles
  • Fixed issue in some cases where a bad automatic mesh caused simulations to fail after calculation (float division by zero)
  • Fixed issue in some cases that caused the Python Plots to not open and the PDF report to not generate
  • ParaView now works in Template cases
  • Fixed changing role definitions from face to solid not bringing the user back to the main role screen
  • Fixed calculation time increase in some cases introduced in RF v3.2
  • Parametric studies now work with new versions of FreeCAD
  • Removed the apostrophe that appears before the name of the variables in Geometry Variables
  • Fixed incorrect power unit scale in Python Plots
  • Rescaling to custom data range in Python Plots now shows the current scale minimum and maximum values for all result fields
  • There is now a grid line for 0 in Python Plot charts
  • Mesh slicing visualization now updates when the mesh is regenerated

v3.2.1 (May 30th, 2024)

Bugfixes:

  • Fixed license-related issue that blocked calculation in specific cases

v3.2.0 (May 29th, 2024)

Features:

  • Added peak directivity and gain at each frequency to CSV export and Custom Plots

Improvements:

  • Unassigned geometry volumes in Geometry section are now highlighted during role selection when all mandatory parts have been assigned
  • Improved accuracy of multiport coaxial port simulations using sequential excitation
  • Improved reliability of PDF report generation
  • Added CAD import quality check that highlights places in the imported model with small gaps that may cause automatic mesh failure
  • General stability improvements

Bugfixes:

  • Fixed PDF reports not showing the correct value of total mesh elements
  • Cases made prior to RF v2.5 now show the correct default value of corner mesh refinement modifier
  • Removed misleading message in PDF reports about unsaved changes in sequential excitation multiport cases
  • Current Density scale is now shown in cases where only conductive parts are used whereas previously it was missing
  • Fixed topology change notification appearing in cases where no topology change was introduced when sending the updated geometry from FreeCAD
  • Internet connection disruption during calculation no longer causes CENOS to stop calculation
  • Fixed Geometry section being available in the top bar before sending geometry from the Geometry Editor leading to empty user interface
  • It is now possible to stop mesh troubleshooting

v3.1.0 (April 11th, 2024)

Features:

  • Added Streamline and Vector visualization to Python Plots
  • Implemented variable power input to the Discrete Port and Coaxial Port
    • Simultaneous excitation has a single input that affects all ports while in Sequential excitation cases each port has its own power input window
  • Added ability to define Port Capacitance instead of reactance to the Discrete Port to allow frequency dependent complex part of port impedance
    • This allows to define RFID chip resistance and capacitance without the need of a separate lumped element

Improvements:

  • CENOS now supports FreeCAD v0.21.2
    • To use newer versions of FreeCAD, the user needs to manually download the installer for FreeCAD and specify the path in Settings to the new installer. CENOS needs to be restarted for changes to take into effect

Bugfixes:

  • Current Density now appears in the Result Field dropdown in its own Python Plot tab
  • Fixed negative dielectric losses appearing in cases with a defined port reactance
  • Fixed radiated power being larger than the previous default input power (1 W) in cases with a defined port reactance

v3.0.0 (March 5th, 2024)

Features:

  • Updated Python Plots to include more results
    • Added Electric and Magnetic Field visualization
    • Added Surface Current Density visualization when using real conductors
    • Added Radiation Pattern Custom Cuts, allowing to visualize specific cuts of the 3D pattern
  • Added ability to calculate multiple frequencies in parallel
    • This function is currently directly controlled by the user in Simulation Control in Physics
  • Added new computational algorithm for more accurate simulations, utilizing higher order elements
    • This can be controlled in Simulation Control in Physics

Improvements:

  • Updated Python Plot UI
  • Added new icons to distinguish Python Plots and ParaView
    • Python Plots are now opened with the rightmost icon under the Visualization block, using the Eye symbol
    • ParaView can still be opened using the second icon from the right under the Visualization block, using the ParaView three stripe logo
  • Modifying Geometry Variables in Simulation Control no longer resets the units in FreeCAD CENOS Parameters spreadsheet
  • Added ability to save a screenshot of 3D results directly from Python Plots

Bugfixes:

  • Fixed incorrect Directivity and Gain results in multiple port Simultaneous Excitation cases
  • Fixed the simulation STOP button being missing in Parametric Study cases
  • Fixed CAD replacement process in the From CAD workflow
  • Fixed Curvature Safety and Surface Gradient not working in Advanced Meshing Parameters
  • Fixed an issue where the coaxial port would produce “Null determinant” error when placed on the Z axis
  • Fixed Single Port cases not generating Extra Results and PDF report when the user had defined Simultaneous Excitation
    • Existing cases will generate the PDF report, but Extra Results generation will require a recalculation of the case
  • Fixed issue where results would not open for cases using Custom application type and a Conductor role
  • Replaced missing roles in all application types

v2.5.0 (December 22nd, 2023)

Features:

  • Added Gain calculation and result visualization
  • It is now possible to view case and geometry setup and meshing during calculation using the new upper bar
  • Added conductive face and solid corner refinements to the advanced meshing settings
    • Corners get automatically refined with automatic mesh settings

Improvements:

  • Reworked upper settings bar for better navigation between case stages
  • Python plots are now full screen within the user interface
  • Mesh inspection is now embedded into the mesh generation section
  • ParaView no longer opens automatically upon calculation finish
  • Reworked application types
    • Removed Reflector application type, reflector role is now available in other app types
    • Renamed Waveguide role to Waveguide Cavity for better understandability
    • Renamed Custom application type to Other
  • Added warning in Mesh Generation about large mesh element counts

Bugfixes:

  • Fixed one instance where case would fail with “PETSc error: Error in external library” error
  • Parametric study no longer requires to generate mesh manually before pressing run
  • Fixed issue in meshing that failed with error “No matching entity found for ‘OCCsolid_1′”

Other:

v2.4.0 (September 29th, 2023)

Features:

  • Added Polarization Axial Ratio calculation
  • Added 3D radiation pattern visualization in Python Plots
  • Case setup parameters, such as port impedance and material properties, are now available in Custom Plots
  • Added Mesh Inspection within the Mesh Generation screen

Bugfixes:

  • Fixed Power and other plots not showing the appropriate unit prefix and not matching the shown values
  • The log and PDF report now show the same total calculation time
  • Fixed Radiation Intensity plane cut CSV export not generating in the results folder
  • Fixed PDF report not generating when using the waveguide port in the Other application type

v2.3.3 (August 4th, 2023)

Features:

  • Added ability to define a custom Far Field resolution in Simulation Control

Improvements:

  • Submesh element size now affects the size of elements inside the submesh volume
    • This change will increase the overall element count in the model, but will produce a more uniform mesh and increase accuracy
  • Added a warning message if the frequency is set incorrectly, e.g., start frequency is larger than end frequency

Bugfixes:

  • Fixed incorrect beamwidth value calculation in PDF report if the maximum directivity was pointed in the negative Z axis direction
  • Fixed missing significant digits in the frequency selection of the Polar Plots in 2D results in cases with a start frequency that is lower than 1 GHz

v2.3.2 (May 30th, 2023)

Features:

  • Added ability to define kHz in Frequency Selection
    • To select kHz frequencies, define up to three significant digits after a decimal point, e.g. 13.56 MHz

Improvements:

  • Added padding from maximum value to the edge of the Polar Plot for better plot readability in Python Plots
  • A prompt warning user about unsaved changes when trying to close the case now appears over Python Plot window
  • Significantly improved CAD import and air domain generation time in FromCAD workflow

Bugfixes:

  • Fixed issue where Lumped Elements with a defined capacitance and/or inductance produced incorrect results
  • Fixed issue where case running was blocked after completing a Parametric Study with FreeCAD open
  • Fixed issue where FreeCAD was not possible to reopen after sending geometry to CENOS from FreeCAD and closing FreeCAD during the “Topology is changed. Replace the previous geometry?” prompt
  • Fixed “Add parameter” tooltip not showing in the Parametric Study setup window

v2.3.1 (May 11th, 2023)

Features:

  • Added ability to hide solids when selecting terminals for the discrete port and lumped elements

Improvements:

  • Added descriptive labels next to dropdown menus in the Physics section where they were missing
  • Hovering over a discrete port or lumped element definition in the Physics section tabs will now make all domains transparent to make it possible to distinguish ports from one another
  • Significantly improved CAD importing speed

Bugfixes:

  • Fixed mesh element count value not updating in Submesh Mesh Refinement after regenerating the mesh

v2.3.0 (April 17th, 2023)

Features:

  • Added an in-built visualization tool for 2D graphs and polar plots called Python Plots
  • Added ability to create custom plots in the Python Plot window
    • Custom plots can use existing calculated values or calculate completely new values
  • Added a Full Far Field data export in the results folder of the case folder
    • Export gets generated automatically for each frequency
    • Contains Far Field data in Theta, Phi, Etheta, Ephi and Directivity
  • Added ability to define a complex port impedance with the discrete and coaxial port definitions
    • The original Impedance definition window is now replaced with Resistance and Reactance (Z = R + jX)
    • All existing cases will have their impedance values rewritten in the Resistance field as the real part of the impedance
    • The default values of these fields will be 50 Ohms for Resistance and 0 Ohms for Reactance to retain the default 50 Ohm Impedance

Improvements:

  • Changed name for Port to Discrete Port
    • Existing discrete port definitions will retain their name until new terminals are selected
  • Improved handling of memory intensive cases by allocating more memory if an issue occurs during the calculation
  • Significantly improved simultaneous excitation case calculation speed
  • Removed ability to renormalize the Touchstone file to a different impedance
    • This was done due to complex port impedance functionality being added to the port definition
  • Updated Yagi-Uda antenna template in Templates section
  • Replaced Simultaneous excitation checkbox with a dropdown below frequency selection
    • Does not affect single port simulations

Bugfixes:

  • Fixed issue where multiport coax cases produced constant S parameter values
  • Reordered the CSV export data fields so that identical data types are ordered within the same column
    • This issue appeared in sequential excitation cases
  • Fixed multiport cases with real conductors failing due to “ERROR Function ‘height’ undefined” error
  • Fixed multiple results for the same frequency in the CSV export of simultaneous excitation multiport cases

v2.2.3 (March 16th, 2023)

Improvements:

  • Added a close button to the CAD replacement prompt
  • Extended Component Library in FreeCAD to include fully parameterized templates of the antenna’s that are available in the Template workflow
  • Added a log entry that shows which case or Parametric Study subcase is being calculated to better understand which case is running
  • Added an error message when no port is defined in Geometry section
  • Added ability to create new spreadsheets for parameter definitions in FreeCAD
  • Reworked Far Field calculations for increased accuracy

Bugfixes:

  • Fixed Geometry Variables table not updating after a variable change
  • Fixed Compressing with results not including results of the Parametric Study
  • Removed second prompt to create a new document when importing a new .FCStd file in FreeCAD
  • Fixed an error that occurred when sending geometry from FreeCAD with a parameter that starts with uppercase “A”
  • Fixed an issue where simulation would produce no results if port terminals overlapped
  • Fixed the Template section not being opened automatically when selecting the Templates workflow
  • Fixed boundary definitions not clearing after changing or deleting the role of a face

v2.2.2 (February 16th, 2023)

Improvements:

  • Added a button under “Visualization” in Desk that directly opens the “extra_results” folder with the File Explorer

Bugfixes:

  • Fixed Component Library in FreeCAD not displaying text properly
  • Fixed the SMA edge connector not getting placed in the model in FreeCAD from the Component Library
  • Removed feed sketches from both Patch antenna templates in FreeCAD’s Component Library
  • Fixed incorrectly assigned parameters for both Patch antenna templates in FreeCAD’s Component Library

v2.2.1 (February 1st, 2023)

Bugfixes:

  • Fixed message in Support Chat that says there is a version mismatch despite running in the latest version
  • Fixed “Wire” role meshing roughly in some cases

v2.2.0 (January 31st, 2023)

Features:

  • Added application type for RFID
  • Added Curvature Safety setting to Mesh Generation, allowing for more control over cylinder and other curved edge meshing

Improvements:

  • Moved Touchstone export settings from Ports to Simulation Control
  • Moved Touchstone export, Smith charts and CSV export to a separate folder in the case folder (“extra_results”)
  • Improved overall error message handling and user experience

Bugfixes:

  • Fixed “Cancel” not stopping mesh generation
  • Fixed issue where non-incremented port ID’s caused the Touchstone export to fail
  • Fixed Kernel error that randomly appeared at RUN
  • Fixed the Core: XXXXXX error in simulation terminal

v2.1.1 (December 12th, 2022)

Bugfixes:

  • Fixed a problem which sometimes occured during post-proccesing

v2.1 (December 8th, 2022)

Features:

  • Added a mesh volume gradient, which affects the fineness of the mesh between volumes
  • Added a Smith chart export to the case “results” folder
    • Currently works only on single and sequentially excited multiple discrete ports
  • Added a Touchstone (SnP) file export to the case “results” folder.
    • Option to renormalize the port impedance seen in the Touchstone export from the Port section in Physics
    • Added option for complex port impedance
    • Currently works only on single and sequentially excited multiple discrete ports

Improvements:

  • Improved the Mesh Generation screen for a better user experience
  • Now possible to select individual faces for mesh refinement if they have been merged under a single role

Bugfixes:

  • Cases with a coaxial port now show the combined results for a Parametric Study
  • Excited waveguide ports no longer radiate in both directions

v2.0.2 (October 19th, 2022)

Improvements:

  • Removed redundant information from the log

Bugfixes:

  • Fixed an issue where GetDP caused some cases to not calculate
  • PDF report can now be generated for cases with a coaxial port
  • Dielectric and Substrate roles now mesh properly using the automatic mesh
  • Fixed an issue where it was not possible to send updated geometry with topology changes from FreeCAD
  • Fixed inaccurate radiated power values in the CSV export
  • Fixed identical S-parameters in cases with multiple coaxial ports

v2.0.1 (September 6th, 2022)

Features:

  • Reintroduced an improved coaxial port
  • Added S-parameter phase

Improvements:

  • Python is no longer needed to be installed separately
  • Removed legacy post-processing menu
  • Improved waveguide port accuracy
  • Improved updating variables from FreeCAD in “Geometry variables”

Bugfixes:

  • Hovering over Cartesian plots of radiation pattern now shows correct angle and directivity
  • Adding lumped elements in Custom and Wire application types is now possible
  • Fixed a problem where it was not possible to run sequential simulation with lumped elements and multiple ports
  • Fixed inaccurate calculation when using non-PEC conductors and lumped elements
  • Fixed an issue where mesh preview would not show for shared cases
  • Fixed an issue with radiation patterns in PDF reports
  • Fixed an issue where horn antenna simulations yielded inaccurate results
  • Fixed inability to select TE01 mode
  • Fixed a bug where variables from FreeCAD disappeared when set to “0” in “Geometry variables”
  • Fixed a bug where variables from FreeCAD updated slowly in “Geometry variables”
  • Fixed an issue where results wouldn’t show for cases with Patch and Ground volumes

v2.0.0 (June 15, 2022)

  • Improved CAD import and handling
  • Far better automatic meshing
  • Manual meshing interface
  • User-friendly point-based port assignment
  • Lumped elements for RLC series & parallel
  • Waveguides
  • Clear notifications in case CAD processing or automatic meshing failed, highlighting the geometry object that caused the problem
  • CAD re-loading keeps all relevant settings
  • Faster calculation/post-processing speed
  • Problem-specific result postprocessing
  • Other improvements in UI and UX
  • Minor physics optimizations
  • Numerous bug fixes and improvements

v1.2.4 (April 1, 2021)

  • Updates to support chat.

v1.2.3 (March 31, 2021)

  • Fixed S11 > 0 bug.
  • Fixed unstoppable parametric sweep.
  • Fixed license check crash.
  • Fixed template case saving issue (temporary cases).
  • Fixed disappearing From CAD geometry (which failed to simulate).
  • Fixed boundary side highlight (preview section).
  • Fixed parametric sweep when using an imported mesh.
  • Fixed rotated PDF results.
  • Fixed ParaView lacking results/error display.
  • Fixed E-field display bug.
  • Fixed invisibility of sketched faces.
  • Fixed radiation pattern plots’ normalization.
  • Mesh element count fix.
  • Mesh edge orientation fix.
  • Resolved radiated power calculation (from accepted power and dielectric losses).

v1.2.2 (March 11, 2021)

  • Polar plots’ scaling is now normalized.
  • Resolved consistency in the symbol of object merging.
  • Resolved phase shift issue that introduced errors in physics computations.
  • Improved the robustness of the role assignment procedure.
  • Fixed 3D farfield bug that disappeared upon the introduction of ParaView filters.
  • Fixed |S11| > 0 dB caused by phase-related issues.
  • Phase shift value is now stored and isn’t lost when going back to a previous value-definition stage.

v1.2.1 (December 21, 2021)

  • Coaxial port now works similar to uniform port.
  • Fixed “Create automatic mesh now” workflow.
  • License key can now be changed.

v1.2.0 (November 25, 2021)

  • Multi-port S-Parameters, enabling engineers to simulate antenna arrays and other networks (such as filters) like never before;
  • Parametric Workbench, accelerating the process of trial and error in terms of geometric adjustments, by running all the desired configurations in one go automatically;
  • Three new antenna templates added:
    • Triangular Microstrip Antenna
    • Circular Microstrip Antenna
    • Yagi-Uda Wire Antenna

v1.1.5 (August 23, 2021)

  • Warning message if user opens newer case in the older CENOS version.
  • Fix: Correct calculations when coaxial port is selected.
  • Frequency start and end values should be positive integers.
  • Fix: Microsoft VC++ redistributable install restarted PC without asking.

v1.1.4 (July 13, 2021)

  • Improved support chat.
  • Recent material badges are now pinnable.
  • Role parameters are kept/updated, if geometry is sent from pre-processor again.
  • License key now can be changed.
  • Cases now can be stored in path with ‘space’ in file path.
  • Improved import of STEP files.
  • Fixed hanging of FreeCAD during meshing.
  • Role type can now be changed.
  • Can rename faces in Geometry interface.

v1.1.3 (June 2, 2021)

  • Fixed version check of 3rd party components.

v1.1.2 (May 19, 2021)

  • Fixed freeze while meshing in FreeCAD.

v1.1.1 (May 14, 2021)

  • All PRO plan functionality is enabled for Trial plan as well.
  • App notifies if VC++ redistributables are missing and there is no access to Windows registry settings.
  • Ipt import now works with non-English locale.
  • Panel mount SMA connector is added to component library.
  • Bug where play button re-imports file is fixed.
  • Component library descriptions now display correctly formatted markdown.

v1.1.0 (April 20, 2021)

  • Multiple processor cores will be used in simulation. Custom settings added to select threads and processor architecture. (Professional subscription)
  • Direct support chat built into application. (Professional subscription)
  • PCB flattening tool added to FreeCAD.
  • KiCAD integration into FreeCAD.
  • Fixed display of multi-frequency simulation in PDF results.
  • FreeCAD component library updated.
  • Terms & Conditions updated removing some restrictions (Section 6). Now, no issue to use the software for design of such things as medical equipment, e-cigaretes and military/governmental projects.

v1.0.2 (April 6, 2021)

  • ParaView updated to version 5.9, which solves crashing issues.
  • First time hints can be reenabled in settings.
  • Meshing is not blocking UI in FreeCAD.
  • Meshing improvements in FreeCAD.
  • STL files are explicitly not supported as CAD input.
  • Added “Extract face/edge” tool in FreeCAD.

v1.0.1 (March 26, 2021)

Improvements

  • Added ParaView log file, to improve future investigations.
  • Added aspect ratio check when filling the form in a template.
  • Allow space and dot in the case folder path.
  • Disallow to run calculation, if port is not defined.
  • Better automatic mesh size algorithm.
  • Clearer meshing error messages.

Bug fixes

  • Far field not created, if air box is small.
  • Version update pop-up opens Windows Explorer, not the default browser.
  • Hints stay visible over the third party installation settings and other modal windows.
  • Meshing problems with certain mesh sizing.
  • Misalignment of SWR and S11.
  • Error when re-importing modified STEP model.
  • Website spelling mistakes.
  • Automatic determination of uniform port failed for imperfect conductor.
  • Kernel crash if entered invalid input data in a template.

We are a software company on a mission to reshape the engineering process by providing engineers of all disciplines with truly accessible simulation tools for practical work.

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