Open Complementary Split Ring Resonator dual Band Wireless MIMO Antenna

The demand for dual-band Wi-Fi has increased in recent years, as it allows for high-speed data transmission of up to 10 GB/s. A proposed MIMO antenna design incorporates an open complementary split ring resonator (OCSRR) meta-material structure. The OCSRR unit cell comprises two metallic terminals that can be activated by voltage or current. In this design, two OCSRRs are attached to rectangular slotted antenna patches, which are symmetrical and positioned nearly orthogonally over a 40 mm x 80 mm area in a MIMO configuration. The distance between the two antenna edges, has been optimized to 3.2 mm. This MIMO antenna design functions as a band-pass filter for both the 2.4 GHz band, with a bandwidth of 498 MHz, and the 5.5 GHz band, with a bandwidth of 840 MHz. The maximum return loss (S11) is -29 dB, while the mutual coupling (S12) is -22.8 dB. This 2X1 MIMO antenna design is suitable for use in small Wi-Fi routers operating at wireless frequencies ranging from 5.15 to 5.5 GHz and 2.4 to 2.48 GHz.