REDUCTION OF COUPLING BETWEEN 2 WIRE ANTENNAS USING A SLOT

The reduction of coupling between two wire antennas operating at diffe rent frequencies on an infinite ground plane is considered. An impedan ce loaded slot is introduced between the two antennas. A coupling coef ficient and a transmission coefficient are used to evaluate the coupli ng behavior. It is found that by an appropriate choice of the slot len gth, location and load impedance the coupling coefficient can be reduc ed significantly. The problem is analyzed by the method of moments. Po rt parameters are used to relate a feed port, load ports on the two wi re antennas and a load port on the slot. In so doing, a large amount o f computation time is saved in calculating the antenna characteristics for various loads on the slot.