Near-field coupling characteristics of typical radio communication antennas

Abstract

In modern communication system, electromagnetic equipment is centralized arranged, near-field coupling effect among the various radio communication antennas cannot be ignored. In this paper, by means of numerical simulation and actual test, the coupling effects are simulated to study the near-field coupling effect of antennas in following situations: between two shortwave bipolar antennas, between the LPDA and VHF dipole antenna, and between two VHF line antennas when polarization directions have a difference of 45 degrees. The near-field coupling property regularities of radio antennas with the typical property frequency and pitch variation are summed up, and some simulation experiment is carried out.