become directional and therefore the performance of the multiple antenna array
degrades. After demonstrating the near-field coupling cancellation approach for
two antennas, the method is extended to a circular array where only feed-forward
path is applied to circumferentially adjacent elements. It is shown that, the
scattering effects of the other antennas on the radiation pattern of each individual
antenna cannot be completely eliminated but can be kept below an acceptable
level by the proposed technique. By virtue of this method for reducing the mutual
coupling, the overall array has the capability to create more directive radiation
pattern with lower side-lobes. This technique is utilized to reduce the coupling
between biconical antennas in a circular array within 40% bandwidth. It is
demonstrated that there is an optimum magnitude and phase weighting for the
array with reduced mutual couplings for which the radiation pattern exhibits
higher gain and less side-lobe levels compared to the one with higher level of
coupling between elements