Dual-element wideband patch radiator integrated with double-negative metamaterial at sub-6 GHz for n46/n47/n79/n96 band applications

In order to enable fifth-generation communication services with fast speeds and large capacities, the antenna with wide operating band spectrum is essential. To fulfill needy of 5G, in this paper presented a compact 20 × 50 × 1.6 mm3 dimensioned wide band metamaterial-etched couple-element MIMO antenna operating at sub-6 GHz. Here, the metamaterial-inspired complementary rectangular split ring resonator (MI-CRSRR) on patch and the rectangular slotted ground (RSG) are the key elements for heightened radiation. The addition of MI-CRSRR on patch provides wider bandwidth. With the aim of enhancing the signal-emitting quality, a closely spaced couple-element MIMO radiating structure was developed and its performance was analysed. The antenna achieved significant diversity parameters such as ECC < 0.05, DG ~ 10 dB, CCL < 0.2bits/s/Hz and MEG < −6 dB without any external decoupling structures. The demonstrated antenna covers 5G n46 (5.150–5.925GHz)/n47 (5.855–5.92 GHz)/n79 (4.4–5GHz)/n96 (5.925–7.125GHz) bands with peak resonant frequency at 5.5GHz. The maximum gain of 9.5dBi and the efficiency of 91.2% were observed over the resonated band. The proposed antennas were fabricated and tested. The measured results are accruable compared to simulated. results.