ABSORPTION EFFICIENCY OF THE RECTENNA OF AN INFINITE CMSA ARRAY Generally, an infinite array model can apply approximately to the analysis of the large rectenna array. Although the edge effect cannot be evaluated under such approximation, we obtain very simple and useful results. Consider an infinite array of CMSA's shown in Fig. 2. An angle 6 is the direction of propagation of the incident plane wave and is restricted to the x-z plane. Polarization is parallel to the x-z plane. Therefore, we ignore the polarization mismatch loss. Here, we assume that thickness of the substrate is very small compared with the wave length. So, we can consider a very simplified model — single mode (TMno) excitation model of a magnetic current loop on the ground plane. Using the Stark’s method (3), we obtain the active admittance
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