Figure 2
From: Microwave analogy of Förster resonance energy transfer and effect of finite antenna length
Influence of the antenna length on the energy transfer enhancement near a PEC mirror. (a) Setup and notations for parallel dipoles. (b) Energy transfer enhancement (with respect to free space) as a function of the distance to the PEC mirror for ideal point dipoles (black dotted line, Green’s function theory) and dipoles of finite lengths L (color lines, our analytical model). The separation between antennas is kR = 1 (R = 10 mm, 5 GHz frequency). (c) Relative error in the energy transfer enhancement of finite antennas compared to point dipoles. The right axis indicates the real part of the antenna input impedance. (d)–(f) are similar as (a)–(c), but for perpendicular dipoles. The grey area in (f) corresponds to the region of parameters which is physically impossible due to finite dipole lengths.
