MIMO Wireless Networks, 2nd Edition

Appendix C

Antenna Coupling Model

In this appendix, the antenna coupling model presented in Section 2.5.2 is rigorously derived. We explain why the coupling matrix may only derived if the antennas are minimum scatterers. We distinguish the cases of antennas being minimum scatterers with respect to impedance parameters and minimum scatterers with respect to admittance parameters.

C.1 Minimum Scatterers W.R.T. Impedance Parameters

As explained in [RP94], antennas that are minimum scatterers with respect to impedance parameters are such that an open-circuited antenna behaves almost exactly as if it were not present at all. A typical example of such an antenna is the half-wave length dipole. Indeed, open circuited half-wave length dipole elements become ...