Higher isolation dual‐frequency distinct coupled antennas based on integrated filtering structures

This letter proposes a new higher isolation dual‐frequency distinct coupled monopole antenna system by using integrated low‐pass and high‐pass filtering structures. The isolation of the dual‐frequency distinct antennas at 2.4 GHz and 3.6 GHz can be successfully improved by 24 dB under the stable radiation performances. The measurement results are consistent with the simulation results of the fabricated prototype, which verifies the feasibility of this method. The present compact higher isolation frequency distinct antennas could be chosen as a new candidate for integrated multiband anti‐interference terminal systems.