Antenna and Array Analysis

Port, surface, and field analysis; embedded pattern, pattern multiplication

Perform port, surface, and field (space around the antenna) analysis of antennas and arrays. Use plane waves to excite an antenna to simulate a receiving antenna. Use Antenna Toolbox™ functions to read and write data from MSI Planet antenna files. Design and tune geometric properties of antennas in the antenna catalog to resonate at a particular frequency.

Objects

planeWaveExcitation Create plane wave excitation environment for antennas, arrays, planar structures or 3-D structures

Functions

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Port Analysis

`bandwidth`	Calculate and plot absolute bandwidth of antenna or array (Since R2024a)
`efficiency`	Calculate and plot radiation efficiency of antenna or array (Since R2021a)
`feedCurrent`	Calculate current at feed for antenna or array
`impedance`	Calculate and plot input impedance of antenna or scan impedance of array
`resonantFrequency`	Calculate and plot resonant frequency of antenna (Since R2024a)
`returnLoss`	Calculate and plot return loss of antenna or scan return loss of array
`sparameters`	Calculate S-parameters for antenna or array
`vswr`	Calculate and plot voltage standing wave ratio (VSWR) of antenna or array element

Field Analysis

`pattern`	Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array
`patternAzimuth`	Azimuth plane radiation pattern of antenna or array
`patternElevation`	Elevation plane radiation pattern of antenna or array
`peakRadiation`	Calculate and mark maximum radiation points of antenna or array on radiation pattern (Since R2024b)
`beamwidth`	Beamwidth of antenna
`EHfields`	Electric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays
`axialRatio`	Calculate and plot axial ratio of antenna or array
`phaseShift`	Calculate phase shift values for arrays or multi-feed PCB stack
`rcs`	Calculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array
`doa`	Direction of arrival of signal (Since R2022a)

Surface Analysis

`charge`	Charge distribution on antenna or array surface
`current`	Current distribution on antenna or array surface

Pattern Multiplication

`patternMultiply`	Radiation pattern of array using pattern multiplication
`arrayFactor`	Array factor in dB

Embedded Pattern and Coupling

`correlation`	Correlation coefficient between two antennas in array
`sparameters`	Calculate S-parameters for antenna or array
`pattern`	Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array

Topics

Field Calculation in Antennas
Field calculation in metal antennas and metal-dielectric antennas.
Antenna Modeling and Analysis
Construct, visualize and analyze antenna elements.
Array Modeling and Analysis
Construct, visualize, and analyze an antenna array.
Infinite Array Analysis
This example shows the use of infinite array analysis to model the behavior of a single element - the unit cell embedded in the array[1] - [3].
Parallelization of Antenna and Array Analyses
This example shows how to speed up antenna and array analysis using Parallel Computing Toolbox™.

Featured Examples

Antenna Modeling and Analysis

Construct, visualize and analyze antenna elements.

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Array Modeling and Analysis

Construct, visualize, and analyze an antenna array.

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Port Analysis of Antenna

Quantifies terminal antenna parameters, with regard to the antenna port. The antenna is a one-port network. The antenna port is a physical location on the antenna where an RF source is connected to it. The terminal port parameters supported in Antenna Toolbox™ are

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Antenna Array Analysis

Create and analyze antenna arrays in Antenna Toolbox™, with emphasis on concepts such as beam scanning, sidelobe level, mutual coupling, element patterns, and grating lobes. The analyses is performed on a 9-element linear array of half-wavelength dipoles.

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Plane Wave Excitation - Scattering Solution

Explains how to excite an antenna using a plane wave. The antenna in this case can be thought of as a receiving antenna. A receiving antenna may be viewed as any metal object that scatters an incident electromagnetic field. As a result of scattering an electric current appears on the antenna's surface. The current in turn creates a corresponding electric field. This produces a voltage difference across the feed. This voltage constitutes the received signal. [1]

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Direction of Arrival Determination Using Full-Wave Electromagnetic Analysis

This example shows how to determine the Direction of Arrival (DoA) when the transmission source is an antenna located in the far-field region or by assuming that the incident signal behaves like a plane wave incident on the receive array. DoA can be denoted by two angles phi and theta in the spherical co-ordinate system. It is a common practice to use a receive antenna array to scan for any incoming signals and to calculate its angles of arrival with respect to the center of the array. The incoming signal is commonly assumed to arrive from a far-field transmission source. Proper accounting of receive array’s electromagnetic behavior is one of the key elements in determining the angles of arrival of the incident signal.

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Analyze Electromagnetic Interference from Shielding Enclosures

Model shielding enclosure using custom 3D shapes and analyze electromagnetic interference due to slots or apertures in enclosure excited by interior sources.

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