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Title: :  Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications
PaperId: :  28250
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 12 Issue 2 2026
DUI:    16.0415/IJARIIE-28250
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
M Manaswi Vasireddy Venkatadri Institute of Technology
K SirishaVasireddy Venkatadri Institute of Technology
N V Srilakshmi Vasireddy Venkatadri Institute of Technology
N Manisha Vasireddy Venkatadri Institute of Technology
Nishat Afroz Vasireddy Venkatadri Institute of Technology

Abstract

Electronics and Communication Engineering
5G, circular patch, HFSS simulation, MIMO antenna, n78 band, sub-6 GHz.
This study introduces a compact four-element Multiple-Input Multiple-Output (MIMO) array engineered for the sub-6 GHz 5G n78 frequency band (3.3–4.2 GHz). The proposed structure employs circular microstrip patch radiators arranged symmetrically on a Rogers RO4350B substrate, chosen for its favorable loss characteristics. By leveraging an inset microstrip feed mechanism, the design achieves optimal impedance matching without necessitating complex external circuitry. Full-wave electromagnetic simulations, executed within Ansys HFSS, validate the array’s resonance at 4.02 GHz, achieving a fractional bandwidth of approximately 17% (3.6–4.3 GHz) and a peak realized gain of 5.36 dBi. Critical MIMO metrics, specifically the Envelope Correlation Coefficient (ECC) and Diversity Gain (DG), are calculated to assess system viability. Results indicate an ECC below 0.01 and a DG approaching 10 dB, confirming robust channel isolation. This work demonstrates that geometric symmetry and careful spacing can effectively replace complex decoupling structures, offering a streamlined solution for 5G gateway hardware.

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IJARIIE M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . "Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications" International Journal Of Advance Research And Innovative Ideas In Education Volume 12 Issue 2 2026 Page 1046-1050
MLA M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . "Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications." International Journal Of Advance Research And Innovative Ideas In Education 12.2(2026) : 1046-1050.
APA M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , & Nishat Afroz . (2026). Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications. International Journal Of Advance Research And Innovative Ideas In Education, 12(2), 1046-1050.
Chicago M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . "Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications." International Journal Of Advance Research And Innovative Ideas In Education 12, no. 2 (2026) : 1046-1050.
Oxford M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . 'Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications', International Journal Of Advance Research And Innovative Ideas In Education, vol. 12, no. 2, 2026, p. 1046-1050. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/Design_and_Performance_Evaluation_of_a_2×2_Circular_Microstrip_Patch_MIMO_Antenna_Array_for_Sub_6_GHz_5G_Applications_ijariie28250.pdf (Accessed : ).
Harvard M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . (2026) 'Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications', International Journal Of Advance Research And Innovative Ideas In Education, 12(2), pp. 1046-1050IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/Design_and_Performance_Evaluation_of_a_2×2_Circular_Microstrip_Patch_MIMO_Antenna_Array_for_Sub_6_GHz_5G_Applications_ijariie28250.pdf (Accessed : )
IEEE M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz , "Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications," International Journal Of Advance Research And Innovative Ideas In Education, vol. 12, no. 2, pp. 1046-1050, Mar-App 2026. [Online]. Available: https://ijariie.com/AdminUploadPdf/Design_and_Performance_Evaluation_of_a_2×2_Circular_Microstrip_Patch_MIMO_Antenna_Array_for_Sub_6_GHz_5G_Applications_ijariie28250.pdf [Accessed : ].
Turabian M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . "Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 12 number 2 ().
Vancouver M Manaswi , K Sirisha, N V Srilakshmi , N Manisha , and Nishat Afroz . Design and Performance Evaluation of a 2×2 Circular Microstrip Patch MIMO Antenna Array for Sub-6 GHz 5G Applications. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2026 [Cited : ]; 12(2) : 1046-1050. Available from: https://ijariie.com/AdminUploadPdf/Design_and_Performance_Evaluation_of_a_2×2_Circular_Microstrip_Patch_MIMO_Antenna_Array_for_Sub_6_GHz_5G_Applications_ijariie28250.pdf
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