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Guides


 Beyond Analytical Formulas: Accurate Coil Inductance Calculation with ANSOF
 Complete Workflow: Modeling, Feeding, and Tuning a 20m Band Dipole Antenna
 DIY Helix High Gain Directional Antenna: From Simulation to 3D Printing
 Evaluating EMF Compliance  Part 1: A Guide to FarField RF Exposure Assessments
 Design Guidelines for Skeleton Slot Antennas: A SimulationDriven Approach
 Simplified Modeling for Microstrip Antennas on Ungrounded Dielectric Substrates: Accuracy Meets Simplicity
 Fast Modeling of a Monopole Supported by a Broadcast Tower
 Linking LogPeriodic Antenna Elements Using Transmission Lines
 Wave Matching Coefficient: Defining the Practical NearFar Field Boundary
 ANSOF Mastery: Adding Elevated Radials Quickly
 Enhancing Antenna Design: Project Merging in ANSOF
 On the Modeling of Radio Masts
 The Equivalent Circuit of a Balun
 ANSOF Antenna Simulation Best Practices: Checking and Correcting Model Errors


 ANSOF 9.50 Release: Streamlining Polarization, Geometry, and EMF Calculations
 ANSOF 9: Taking Antenna Design Further with New Feeder and Tuner Calculators
 ANSOF Antenna Simulation Software  Version 8.90 Release Notes
 ANSOF 8.70: Enhancing Your Antenna Design Journey
 Introducing ANSOF 8.50: Enhanced Antenna Design & Simulation Software
 Get Ready for the Next Level of Antenna Design: ANSOF 8.50 is Coming Soon!
 Explore the CuttingEdge World of ANSOF Antenna Simulation Software!
 Upgrade to ANSOF 8.20  Unleash Your Potential
 ANSOF 8: Elevating Antenna Simulation to the Next Level
 New Release: ANSOF 7.90
 ANSOF 7.80 is ready!
 New ANSOF User Guide
 New Release: ANSOF 7.50
 ANSOF 7.20 is ready!
 New Release :: ANSOF 7.10 ::
 ANSOF 7.0 is Here!
 New Release :: ANSOF 6.40 ::
 New Release :: ANSOF 6.20 ::
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Models

 Download Examples
 Modeling a CenterFed Cylindrical Antenna with ANSOF
 YagiUda Array
 Monopole Over Real Ground
 Helix Antenna in Axial Mode
 Modeling a Circular Loop Antenna in ANSOF: A StepbyStep Guide
 A Transmission Line
 An RLC Circuit
 Explore 5 Antenna Models with Less Than 50 Segments in ANSOF Trial Version

 Modeling a Super JPole: A Look Inside a 5Element Collinear Antenna
 Simulating the Ingenious Multiband Omnidirectional Dipole Antenna Design
 The Loop on Ground (LoG): A Compact Receiving Antenna with Directional Capabilities
 Precision Simulations with ANSOF for Magnetic Loop Antennas
 Advantages of ANSOF for Simulating 433 MHz Spring Helical Antennas for ISM & LoRa Applications
 Radio Mast Above Wire Screen
 Square Loop Antenna
 Receiving Loop Antenna
 Monopole Above Earth Ground
 TopLoaded Short Monopole
 HalfWave Dipole
 Folded Dipole
 Dipole Antenna
 The 5in1 JPole Antenna Solution for Multiband Communications

 The LazyH Antenna: A 10Meter Band Design Guide
 Extended Double Zepp (EDZ): A Phased Array Solution for Directional Antenna Applications
 Transmission Line Feeding for Antennas: The FourSquare Array
 LogPeriodic Christmas Tree
 Enhancing VHF Performance: The Dual Reflector Moxon Antenna for 145 MHz
 Building a Compact HighPerformance UHF Array with ANSOF: A 4Element Biquad Design
 Building a Beam: Modeling a 5Element 2m Band Quad Array
 Broadside Dipole Array
 LogPeriodic Dipole Array
 Broadband Directional Antenna
 A Closer Look at the HF Skeleton Slot Antenna
 The 17m Band 2Element Delta Loop Beam: A Compact, HighGain Antenna for DX Enthusiasts
 Enhancing Satellite Links: The MoxonYagi Dual Band VHF/UHF Antenna


Validation


 Simple Dual Band Vertical Dipole for the 2m and 70cm Bands
 Linear Antenna Theory: Historical Approximations and Numerical Validation
 Validating Panel RBS Antenna with Dipole Radiators against IEC 62232
 Directivity of V Antennas
 Enhanced Methodology for Monopoles Above Radial Wire Ground Screens
 Dipole Gain and Radiation Resistance
 Convergence of the Dipole Input Impedance
 Impedance of Cylindrical Antennas

Plotting 2D Far Field Patterns
The radiation pattern can be visualized as a 2D rectangular plot by selecting Results > Plot FarField Pattern > 2D Rectangular Plot from the main menu. This action will open the Radiation Pattern Cut dialog box (Fig. 1), where two plot types are available:
 Conical Plots: Generated with a fixed Theta and variable Phi.
 Vertical Plots: Created with a fixed Phi and variable Theta.
Select a radiation pattern cut and click OK to launch the ANXY Chart application (Fig. 2), where the radiation pattern is plotted against Phi for conical plots (fixed Theta) or against Theta for vertical plots (fixed Phi).
Within the ANXY Chart app, access the Plot menu to graph various parameters, including Power Density, Directivity, Gain, Efield, and Axial Ratio. This menu also allows you to represent these metrics in decibels (dBi for directivity and gain) and decompose them into linearly polarized components: Theta (VP: Vertically Polarized) and Phi (HP: Horizontally Polarized), as well as circularly polarized components: Right (RHCP: RightHanded Circularly Polarized) and Left (LHCP: LeftHanded Circularly Polarized). The app’s toolbar features buttons: Tot, VP, HP, RH, and LH for quick switching between the total field metric and its corresponding polarization components. For instance, you can plot the total gain in dBi or decompose it into its Theta (VP), Phi (HP), Right (RHCP), or Left (LHCP) components to analyze antenna polarization characteristics. In the case of plane wave excitation, where the antenna is receiving or the metallic structure is scattering electromagnetic waves, the Radar Cross Section (RCS) will be plotted instead of directivity and gain.
The Axial Ratio is defined as the ratio of the minor axis to the major axis of the polarization ellipse. It ranges from 0 to 1 in absolute value and can also be plotted in decibels. A circularly polarized field exhibits an axial ratio of ±1 (or 0 dB), while a linearly polarized field has an axial ratio of zero. A positive (negative) axial ratio indicates a righthanded (lefthanded) polarized field.
The farfield pattern can also be visualized in a 2D polar chart by selecting Results > Plot FarField Pattern > Polar Plot 1 Slice from the ANSOF main menu (refer to Fig. 3). This action will launch the ANPolar app, which displays information such as maximum radiation, beamwidth, and fronttorear/back ratios.
The ANPolar app also features a toolbar with buttons: Tot, VP, HP, RH, and LH that enable the decomposition of the plotted metric into its polarization components.
To plot two slices of a 3D farfield pattern on the same polar chart, navigate to Results > Plot FarField Pattern > Polar Plot 2 Slices in the ANSOF main menu. A dialog box will appear, allowing you to select the two slices. You can choose from two vertical slices, two conical slices, or verticalconical combinations (see Fig. 4).
Clicking on a point in the polar curve will display the corresponding value of the represented metric and the polar angle.