Four-port MIMO Filtenna Based on Multi-layer Suspended Coplanar Waveguide

In this report, a multi-layer suspended SCPW MIMO filternna with adjustable gain zeros on both sides of the passband is proposed, which works at 5.21GHz with an isolation of no less than 25.3dB, a return loss of no less than 15dB, a gain of 2.8dBi, and an envelope correlation coefficient of 0.002, these performance have been demonstrated by simulation and some experimental results. Surface waves and space waves can be suppressed by the proposed suspended coplanar waveguide structure and copper separating wall, respectively.