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Large Structures

Infinite arrays and ground planes

Use antenna elements to create infinite arrays, analyze the arrays over the desired range of scan angles, and calculate scan element patterns.

Objects

infiniteArrayCreate 2-D custom mesh antenna on X-Y plane

Topics

Infinite Arrays

Infinite arrays are rectangular arrays of infinite extent.

Infinite Ground Plane

Antenna Toolbox™ library element uses the image theory technique to model an infinite ground plane.

Model Infinite Ground Plane for Balanced Antennas

This example shows how to model an infinite ground plane and calculate fundamental antenna parameters for balanced antennas.

Model Infinite Ground Plane for Unbalanced Antennas

This example shows how to model an infinite ground plane and calculate fundamental antenna parameters for unbalanced antennas.

Featured Examples

Modeling Mutual Coupling in Large Arrays Using Embedded Element Pattern

Modeling Mutual Coupling in Large Arrays Using Embedded Element Pattern

This example 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>. 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.