Figure 2 (IMAGE) Tohoku University Caption Numerical results on parametric studies of channel capacity (Full-wave: Results obtained by conventional numerical simulation. The results completely match those of the exact expressions derived in this work. Proposed: Numerical results obtained by the approximate expressions derived in this work. The parametric studies were performed with respect to position of the receiving antenna rr and all of the numerical results match almost perfectly.) Credit Keisuke Konno Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.