A compact design of four-port high-gain MIMO antenna using hybrid coupler and dual-polarized radiators.

ABSTRACT: This paper introduces a design methodology for a multiple-input multiple-output (MIMO) antenna that achieves multi-port operation, high gain, as well as compact dimensions. The proposed design employs two dual-polarized radiators integrated with two hybrid couplers. This architecture enables a four-port MIMO array to be realized using only two radiating elements. Meanwhile, the hybrid couplers simultaneously excite both ports of the dual-polarized elements with equal magnitude and a [Formula: see text] phase difference, facilitating high-gain radiation. To validate the proposed concept, an antenna prototype was fabricated and tested. Measurements confirm that the antenna, with an overall compact size of [Formula: see text] × [Formula: see text] × [Formula: see text], achieves a 3.1% operat

SUBMITTER: Kim-Thi P 

PROVIDER: S-EPMC12697993 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature