This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Array Catalog

Finite and infinite arrays, layout visualization

Arrays are several antennas connected and arranged in a regular structure to form a single antenna. Arrays produce radiation patterns that when combined have characteristics that individual antenna radiation patterns cannot produce.

Objects

linearArrayCreate linear antenna array
rectangularArrayCreate rectangular antenna array
conformalArrayCreate conformal antenna array
circularArrayCreate circular antenna array
infiniteArrayCreate 2-D custom mesh antenna on X-Y plane

Functions

layoutDisplay array or PCB stack layout
infoDisplay information about antenna or array
showDisplay antenna or array structure; Display shape as filled patch

Topics

Array Catalog Elements

Types of array elements in Antenna Toolbox™ array library

Mutual Coupling

Active or scan impedance, array factor and pattern multiplication, coupling matrix, isolated or embedded element pattern

Beamforming

Side lobe control, beam scanning

Grating Lobes

Grating lobes are the maxima of the main beam, as predicted by the pattern multiplication theorem.

Rotate Antenna and Arrays

To rotate antenna elements in Antenna Toolbox, use the Tilt and TiltAxis property.

Featured Examples

Modeling Mutual Coupling in Large Arrays Using Embedded Element Pattern

Modeling Mutual Coupling in Large Arrays Using Embedded Element Pattern

Demonstrates the embedded element pattern approach to model large finite arrays. Such an approach is only good for very large arrays so that the edge effects may be ignored. It is common to consider an infinite array analysis as a first step for such kind of analysis. This approach is presented in Modeling Mutual Coupling in Large Arrays Using Infinite Array Analysis; Modeling Mutual Coupling in Large Arrays Using Infinite Array Analysis>. The embedded element pattern refers to the pattern of a single element embedded in the finite array, that is calculated by driving the central element in the array and terminating all other elements into a reference impedance [1]-[3]. The pattern of the driven element, referred to as the embedded element, incorporates the effect of coupling with the neighboring elements. It is common to choose the central region/element of the array for the embedded element, depending on whether the array has an even or odd number of elements(for large arrays it does not matter). The pattern of the isolated element (the radiator located in space by itself) changes when it is placed in an array due to the presence of mutual coupling. This invalidates the use of pattern multiplication, which assumes that all elements have the same pattern. To use pattern multiplication to calculate the total array radiation pattern, and improve the fidelity of the analysis, we replace the isolated element pattern with the embedded element pattern.