AN-SOF v3.0AN-SOF v3.0Antenna Simulation SoftwareAntenna Simulation Software

Golden EngineeringGolden Engineeringwww.antennasoftware.com.arwww.antennasoftware.com.ar

General DescriptionGeneral Description

AN-SOFAN-SOF is the is the easiest to useeasiest to use software software for the simulation of wire antennas and, for the simulation of wire antennas and, at the same time, it is the at the same time, it is the most most accurate oneaccurate one..

Key AdvantagesKey Advantages

• Fast and easy input and output Fast and easy input and output graphical interfaces.graphical interfaces.

• Conformal segments and Conformal segments and modeling of microstrip modeling of microstrip antennas.antennas.

• Extended frequency range.Extended frequency range.

• MATLABMATLAB®® Component Runtime Component Runtime for high accuracy and speed.for high accuracy and speed.

AN-SOF v3.0AN-SOF v3.0Antenna Simulation SoftwareAntenna Simulation Software

Fundamentals of SimulationFundamentals of Simulation

AN-SOFAN-SOF computes the electric computes the electric currents flowing on metallic currents flowing on metallic structures.structures.

Any metallic structure is modeled Any metallic structure is modeled using conductive wires.using conductive wires.

Antennas, transmission lines and Antennas, transmission lines and printed circuit boards are metallic printed circuit boards are metallic structures that can be modeled structures that can be modeled using AN-SOF.using AN-SOF.

The electromagnetic fields radiated The electromagnetic fields radiated by the electric currents flowing on by the electric currents flowing on wire structures are also computed.wire structures are also computed.

Transmitting and receiving Transmitting and receiving antennas can be analysed and antennas can be analysed and designed.designed.

Method of MomentsMethod of Moments

The The Method of Moments (MoM)Method of Moments (MoM) is a is a numerical technique for the calculation numerical technique for the calculation of electric currents flowing on metallic of electric currents flowing on metallic structures.structures.

The wire structure is divided into The wire structure is divided into segmentssegments. Segment length must be . Segment length must be short compared to the wavelength.short compared to the wavelength.

In the In the traditional MoMtraditional MoM, segments are , segments are considered to be considered to be straight wiresstraight wires, so a , so a linear approximation to geometry linear approximation to geometry details is used. details is used.

The current in each segment is The current in each segment is obtained by solving an integral form of obtained by solving an integral form of Maxwell equations in the Maxwell equations in the frequency frequency domaindomain. A matrix equation is obtained . A matrix equation is obtained when segmentation is applied.when segmentation is applied.

Limitations of Traditional MoMLimitations of Traditional MoM

The straight wire approximation often The straight wire approximation often requires a requires a very large number of very large number of segmentssegments to adequately approximate to adequately approximate curved geometriescurved geometries. Poor convergence . Poor convergence of results is obtained for helical, loop of results is obtained for helical, loop and spiral antennas.and spiral antennas.

Convergence problems arise for Convergence problems arise for bent bent wires at right angleswires at right angles and for angles less and for angles less than 30 degrees.than 30 degrees.

Wires cannot be Wires cannot be very closevery close to each to each other. Misleading results are obtained other. Misleading results are obtained when the separation between wires is when the separation between wires is less than a quarter of a segment length.less than a quarter of a segment length.

900

< 300

L

< L/4

Conformal MoMConformal MoM

An innovative MoM is used in An innovative MoM is used in AN-SOFAN-SOF: : the the Conformal Method of Moments Conformal Method of Moments (CMoM)(CMoM)..

In the CMoM, In the CMoM, conformal segmentsconformal segments are are used which exactly follow the contour of used which exactly follow the contour of the structure, so an the structure, so an exact description exact description of geometry detailsof geometry details is obtained. is obtained.

The limitations for bent wires and wire The limitations for bent wires and wire separation are removed by means of separation are removed by means of improved numerical techniques for improved numerical techniques for solving integrals and matrix equations solving integrals and matrix equations via via MATLABMATLAB®® Component Runtime Component Runtime..

AN-SOFAN-SOF is the is the onlyonly software that software that implements the implements the CMoM.CMoM.

Traditional Method of MomentsTraditional Method of Moments

Conformal Method of MomentsConformal Method of Moments

Advantages of CMoMAdvantages of CMoM

Using conformal segments, the Using conformal segments, the number of calculations is reduced number of calculations is reduced and and accuracy is greatly increasedaccuracy is greatly increased..

Simulation time and computer Simulation time and computer memory space are also reducedmemory space are also reduced, , allowing for the solution of bigger allowing for the solution of bigger problems. problems.

Advanced calculation techniques are Advanced calculation techniques are implemented in the CMoM, making implemented in the CMoM, making possible possible simulations from extremely simulations from extremely low frequencies (e.g. electric circuits low frequencies (e.g. electric circuits at 50-60 Hz) to very high ones (e.g. at 50-60 Hz) to very high ones (e.g. Wi-Fi antennas at 2.4 GHz).Wi-Fi antennas at 2.4 GHz).

This This extended frequency rangeextended frequency range is is only available in AN-SOF.only available in AN-SOF.

Traditional Method of MomentsTraditional Method of Moments

Conformal Method of Moments

The AN-SOF Input InterfaceThe AN-SOF Input Interface

The structure can be easily drawn on The structure can be easily drawn on the screen. All wires are placed in 3D the screen. All wires are placed in 3D space, and several 3D-tools with space, and several 3D-tools with mouse support have been mouse support have been implemented. implemented. Other softwares use Other softwares use spreadsheets with a lot of geometrical spreadsheets with a lot of geometrical data, which are very difficult to read data, which are very difficult to read and edit by users.and edit by users.

Discrete impedances can be placed at Discrete impedances can be placed at arbitrary locations on the structure. arbitrary locations on the structure. Discrete generators and external Discrete generators and external fields can be used as excitations.fields can be used as excitations.

Wire skin effect and insulation, perfect Wire skin effect and insulation, perfect and real ground planes, dielectric and real ground planes, dielectric substrates, different wire cross-substrates, different wire cross-sections, suitable unit systems, sections, suitable unit systems, frequency sweeps and several frequency sweeps and several visualization options are available.visualization options are available.

Integrated Graphical ToolsIntegrated Graphical Tools

AN-XY ChartAN-XY Chart Especially designed for the Especially designed for the

graphical visualization of graphical visualization of 2D plots in Cartesian 2D plots in Cartesian coordinates, such as coordinates, such as current distributions vs. current distributions vs. position, impedances vs. position, impedances vs. frequency, and radiation frequency, and radiation vs. angles.vs. angles.

Integrated Graphical ToolsIntegrated Graphical Tools

AN-SmithAN-Smith The famous Smith chart The famous Smith chart

for the representation of for the representation of impedances and impedances and admittances is admittances is implemented with mouse implemented with mouse support for obtaining support for obtaining reflection coefficients and reflection coefficients and VSWR with only one click.VSWR with only one click.

Integrated Graphical ToolsIntegrated Graphical Tools

AN-PolarAN-Polar The widely used polar The widely used polar

diagram for the diagram for the representation of representation of electromagnetic fields electromagnetic fields versus azimuth and zenith versus azimuth and zenith angles, with calculation of angles, with calculation of beamwidth and front-to-beamwidth and front-to-back ratio.back ratio.

Integrated Graphical ToolsIntegrated Graphical Tools

AN-3D PatternAN-3D Pattern A 3D view of radiation and A 3D view of radiation and

scattering patterns can scattering patterns can easly be handled with this easly be handled with this graphical tool. Color maps graphical tool. Color maps for current distributions for current distributions and near fields are also and near fields are also included.included.

ExamplesExamples

AM AntennaAM Antenna

Helix AntennaHelix Antenna

Patch AntennaPatch Antenna

Yagi-UdaYagi-Uda Log-PeriodicLog-Periodic Grid ReflectorGrid Reflector

Horn AntennaHorn Antenna Parabolic AntennaParabolic Antenna V-AntennaV-Antenna

Microstrip ArrayMicrostrip Array Printed Circuit BoardPrinted Circuit Board Printed SpiralPrinted Spiral

Simulation has never been so easy!Simulation has never been so easy!

www.antennasoftware.com.arwww.antennasoftware.com.ar

info@antennasoftware.com.arinfo@antennasoftware.com.ar

AN-SOF Professional v3.0®