A method for achieving the continuous-space electromagnetic channel capacity bound using loaded N-port structures is described. It is relevant for the design of compact multiple-input multiple-output (MIMO) antennas that can achieve channel capacity bounds when constrained by size. The method is not restricted to a specific antenna configuration and a closed-form expression for the channel capacity limits are provided with various constraints. Furthermore, using loaded N-port structures to represent arbitrary antenna geometries, an efficient optimization approach is proposed for finding the optimum MIMO antenna design that achieves the channel capacity bounds. Simulation results of the channel capacity bounds achieved using our MIMO antenna design with one square wavelength size are provided. These show that at least 18 ports can be supported in one square wavelength and achieve the continuous-space electromagnetic channel capacity bound. The results demonstrate that our method can link continuous-space electromagnetic channel capacity bounds to MIMO antenna design.

翻译：介绍了使用装载N-port结构装配的连续空间电磁信道容量的一种方法,该方法与设计在受大小限制时能够达到频道容量界限的压缩多投入多输出天线(MIMO)有关,该方法不限于特定的天线配置和频道容量限制的封闭式表达形式,有各种限制。此外,使用装载的N-port结构代表任意天线的地理偏差,提议一种高效优化方法,以找到达到频道容量界限的最佳MIMO天线设计。提供了利用我们的MIMO天线设计用一个平方波长尺寸模拟频道容量界限的结果。这些结果显示,至少18个港口可以用一个平方波长度支持,并达到连续空间电磁信道容量约束。这些结果表明,我们的方法可以将连续空间电磁信道容量与MIMO天线设计联系起来。