Two Port Multi-band MIMO Antenna With FSS Implementation

A low-profile two-port MIMO antenna is presented in this paper of size 50 mm × 82 mm × 1.6 mm for multiband applications. A FSS (frequency selective surface) structure with partial ground has been introduced in this design. Three FSS strips have been used in parallel to antenna structure in the middle of the backside of antenna. The substrate used is FR-4 (ε
_r
= 4.4). The design has two triangle-shaped patch fed by 50 Ω microstrip transmission line which at its end has a thin strip line for impedance matching. The antenna design has a decent gain of 2.8 dBi.