A small wideband inverted L-shaped flexible antenna for sub-6 GHz 5G applications

This manuscript carries out design and examination of flexible inverted L-shaped connected with a circular ring having plus-shaped geometry on the top left corner and a partial ground on the back. The antenna is realized on a flexible polyimide substrate which is fabricated for further investigation. The flexible resonator achieves a designed footprint of 20 x 30 x 0.2 mm3. The antenna is analyzed in terms of |S11|, 2D gain, radiation patterns, and efficiency under both normal and bend conditions. The antenna shows a decent match between experimental and software simulated data. To establish the use of the proposed design for 5G MIMO applications, an 8-port MIMO with the common ground is designed where the antenna shows satisfactory isolation >15 dB and ECC <0.01 which makes the flexible antenna an excellent choice for realizing the 5G MIMO antennas working at sub -6 GHz band.

Automated summary

This manuscript presents the design and examination of a flexible inverted L-shaped antenna connected with a circular ring. The antenna shows satisfactory performance in terms of isolation and ECC, making it suitable for 5G MIMO applications.