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

Abstract

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.

A compact duplex filtering antenna using a T‐shape probe‐fed patch and hairpin resonators

“…However, it will take a larger space to accommodate two distinct antennas. In Reference , two distinct monopoles with filtering structures were placed together in close proximity to construct a novel duplex antenna system. In Reference , two aperture antennas were put together, and then two band‐stop filters were inserted into their feeding lines to improve the isolation.…”