分析由圆柱形反射器组成的天线，并用线性的角阵列。

描述了用于频率调节连续波（FMCW）应用的77 GHz 2 x 4天线阵列的建模。随着引入无线碰撞检测，避免碰撞和车道出发警告系统，车辆内外的天线和天线阵列的存在已成为司空见惯。考虑到此类系统的两个频带分别围绕24 GHz和77 GHz。在此示例中，我们将研究微带贴片天线作为梯形阵列散热器。介电衬底是空气。

在大型有限阵列中设计子阵列，以形成混合束。杂交边缘形成结合了模拟波束和数字预编码，以智能形成从大天线阵列传输的模式。

天线相互耦合如何影响多输入多输出（MIMO）通道上正交时空块代码（OSTBC）传输的性能。发射器和接收器各有两个偶极天线元件。BER和SNR曲线绘制在不同的相关和耦合方案下。要运行此示例，您需要天线Toolbox™。

A switched beam array of 4 resonant dipoles. The beam switching is accomplished by using a 4-by-4 Butler matrix. The effect of the beam switching is shown by observing the outputs of 4 receiving antennas that are placed in the far-field of the array at the approximate azimuthal angles corresponding to the beam peaks. The effect of mutual coupling between the array elements on the transmit side is accounted for using S-parameters.

Analyzes a 2-antenna diversity scheme to understand the effect that position, orientation and frequency have on received signals. The analysis is performed under the assumptions that impedance matching is not achieved and mutual coupling is taken into account [1].

Uses infinite array analysis to model large finite arrays. The infinite array analysis on the unit cell reveals the scan impedance behavior at a particular frequency. This information is used with the knowledge of the isolated element pattern and impedance to calculate the scan element pattern. The large finite array is then modeled using the assumption that every element in the array possesses the same scan element pattern. The real array of finite size can be analyzed using the embedded element pattern as a next step. This approach is presented in 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.

完全激发阵列的远场辐射模式可以从每个元素的单个嵌入式图案的叠加中重新定位。阵列理论中的模式乘法定理指出，阵列的远场辐射模式是单个元素模式和阵列因子的乘积。在存在相互耦合的情况下，各个元素模式并不相同，因此使模式乘法的结果无效。但是，通过计算每个元素的嵌入式图案并使用叠加，我们可以在完全激发下显示与数组模式的等效性。