Inverted L-shaped with rectangular annular ring ground plane 4-port MIMO antenna for satellite and 5G NR applications

Abstract This article introduces a compact (32 × 64 × 0.8 mm 3 ) four port MIMO antenna for K-band for satellite and for band 5G NR- n257, n258 & n261 for mmWave applications. The proposed antenna is designed at 24 GHz and selected an optimal design (Stage 3) after successive analysis of different stages (Stage 1, Stage 2 & Stage 3) performance. The radiating plane consists of an inverted L-shaped geometry, whereas the ground plane has a rectangular annular ring geometry. The proposed antenna offers an extremely large bandwidth of 20.02–30.8 GHz (simulated) & 20.2–30.3 GHz (measured) and an excellent isolation of greater than 25 dB in entire band. The suggested four-port MIMO antenna system obtained a significant peak gain of 9.5 dB at 24 GHz frequency. MIMO performance metrics in terms of ECC (envelope correlation coefficient), DG (diversity gain), TARC (channel capacity loss), CCL (channel capacity loss) and MEG (mean effective gain) of the proposed antenna is also studied and found in acceptable limits; ECC (0.00003), DG (9.87 dB), TARC (< −10 dB) CCL (< 0.4 bps Hz −1 s −1 ) and MEG ((−12 dB < MEG < −3 dB). Simulated results of the proposed antenna are validated with experimental results and found in close proximity. The performance of the proposed antenna makes it suitable for satellite and 5G and 5G advanced applications.