TY - JOUR
T1 - A compact 3.5 GHz MIMO antenna with enhanced isolation using EMSIW circular cavity-backed structure for 5G applications
AU - Praneeth Kumar, K.
AU - Imamvali, Shaik
AU - Tupakula, Sreenivasulu
AU - Naganaboina, Venkata Ramesh
AU - Rajak, Shaik
AU - Pradeep Reddy, G.
N1 - Publisher Copyright:
© 2025
PY - 2025/9
Y1 - 2025/9
N2 - The paper presents a Multiple-input- multiple-output (MIMO) antenna with four ports, designed on an 80 × 80 mm2 substrate. The antenna utilizes an Eighth-mode substrate integrated waveguide (EMSIW) circular cavity-backed structure, with narrow half-wavelength linear slots to suppress mutual coupling between the elements. This design provides a minimum isolation of 27 dB over the operational frequency band. The antennas are arranged at 90° angles to each other, are linearly polarized, and offer polarization diversity, further improving isolation. This orthogonal design creates overall system performance by lowering the potential of signal deterioration owing to multipath propagation. The Envelope Correlation Coefficient (ECC) is within the acceptable threshold across the operating band, confirming better diversity performance. The antenna operates at 3.5 GHz, with a gain of 1.39 dBi, making it suitable for 5G use cases, particularly in small-cell deployments for modern wireless communication systems where space and performance are major constraints.
AB - The paper presents a Multiple-input- multiple-output (MIMO) antenna with four ports, designed on an 80 × 80 mm2 substrate. The antenna utilizes an Eighth-mode substrate integrated waveguide (EMSIW) circular cavity-backed structure, with narrow half-wavelength linear slots to suppress mutual coupling between the elements. This design provides a minimum isolation of 27 dB over the operational frequency band. The antennas are arranged at 90° angles to each other, are linearly polarized, and offer polarization diversity, further improving isolation. This orthogonal design creates overall system performance by lowering the potential of signal deterioration owing to multipath propagation. The Envelope Correlation Coefficient (ECC) is within the acceptable threshold across the operating band, confirming better diversity performance. The antenna operates at 3.5 GHz, with a gain of 1.39 dBi, making it suitable for 5G use cases, particularly in small-cell deployments for modern wireless communication systems where space and performance are major constraints.
UR - https://www.scopus.com/pages/publications/105011373180
UR - https://www.scopus.com/pages/publications/105011373180#tab=citedBy
U2 - 10.1016/j.rineng.2025.106326
DO - 10.1016/j.rineng.2025.106326
M3 - Article
AN - SCOPUS:105011373180
SN - 2590-1230
VL - 27
JO - Results in Engineering
JF - Results in Engineering
M1 - 106326
ER -