Multi-antenna decoupling technique exploiting MISO channel on neighboring antennas

In this paper, a novel decoupling technique suitable for a compact array antenna is proposed. In this technique, an orthogonal excitation weight in MISO channel between 2 × 1 antennas are utilized. The simulation results demonstrate the excellent isolation and matching characteristics can be obtained when the proposed decoupling technique is applied to a compact three inverted-F array. Also, the proposed technique offers high radiation efficiency over the broad bandwidth.