Mutual coupling between microstripline fed slot antennas

A method is presented for the analysis of the mutual coupling between two microstripline fed slot antennas which incorporates the microstripline-microstripline coupling, slot-slot coupling as well as the microstripline-slot coupling. The even-odd mode method is used to incorporate the coupling between microstriplines and reciprocity method are used to model the discontinuity due to the slots. Green's functions in the spectral domain and the method of moment are also employed for the solution of the unknown field on the slots.