Research Article
An Efficient FR-1 MIMO Antenna for N78/77/48 Bands with Enhanced Isolation Using DGS
@INPROCEEDINGS{10.1007/978-3-031-81168-5_13, author={Manumula Srinubabu and Nuthakki Venkata Rajasekhar}, title={An Efficient FR-1 MIMO Antenna for N78/77/48 Bands with Enhanced Isolation Using DGS}, proceedings={Broadband Communications, Networks, and Systems. 14th EAI International Conference, BROADNETS 2024, Hyderabad, India, February 16--17, 2024, Proceedings, Part I}, proceedings_a={BROADNETS}, year={2025}, month={2}, keywords={5G MIMO Antenna DGS Isolation Radiation efficiency Gain Bandwidth}, doi={10.1007/978-3-031-81168-5_13} }- Manumula Srinubabu
Nuthakki Venkata Rajasekhar
Year: 2025
An Efficient FR-1 MIMO Antenna for N78/77/48 Bands with Enhanced Isolation Using DGS
BROADNETS
Springer
DOI: 10.1007/978-3-031-81168-5_13
Abstract
A high-efficiency, single-band microstrip patch antenna designed for the 5G-sub-6 GHz spectrum is introduced in this research. The antenna incorporates a unique defective ground structure (DGS) by integrating a rectangular cut strip to enhance its characteristics. Constructed on an FR-4 epoxy substrate using the inset feed method, the single antenna measures 15.5(\,\times \,)19.4 mm(^2), while the proposed two-port MIMO antenna spans 52.8(\,\times \,)52.8 mm(^2). With a moderate maximum gain of 4.1 dBi, isolation above 15 dB and radiation efficiency of 97(\%), this antenna operates within the frequency range of 2.5 GHz to 4.2 GHz, covering the isolation above 15 dB in the sub-6 GHz section of the N78/77/48 band in the 5G spectrum. The antenna’s anticipated and observed properties affirm its suitability for 5G-NR band applications below the 6 GHz frequency range.
