A new definition of mutual impedance for application in dipole receiving antenna arrays

A new definition of mutual impedance for two dipole antennas is introduced to characterize the mutual coupling effect between two dipole antennas in a more accurate manner. The calculation method and the measurement procedure for the new mutual impedance are given. Measurement and theoretical results on two monopole antennas were obtained as an example. The new mutual impedance was successfully applied in the compensation of the mutual coupling effect in direction finding and adaptive interference suppression with significantly improved results, showing the importance of the new mutual impedance.