• Vidya P. Kodgirwar
• Kalyani R. Joshi
• Shankar B. Deosarkar

This paper presents the design and testing of an 8-element linear array for Adaptive Array applications using the Least Mean Square (LMS) algorithm for the improvement of directive gain of the array. A conventional microstrip patch antenna has been optimized to operate at 2.3GHz (4G and 5G applications) and this design is extended up to 8 elements using CST Microwave Studio parameterization. The S-parameters, Return Loss, Gain and VSWR of the antenna array are studied for the 2, 4, and 8 elements adaptive antenna. The simulation results are validated on the hardware setup and these are found closely matching with the experimental results. The final eight-element antenna array geometry is fabricated using the coaxial feeding technique. This geometry appears promising in improving the gain from 6.13 to 15.5dBi for a single element to eight elements, respectively. Further, the LMS algorithm is used to compute the optimal complex weights considering different angles for user of interest (60o and 30o) and Interferer (10o and 15o) during MATLAB simulation and then these computed complex weights are applied to antenna elements using CST for beam steering in a different direction. Maxima’s are obtained at 54o and 28o when nulls are at 10o and 15o during CST simulation, and it has been noticed that these results are closely matching with MATLAB results. test the APT. The macroeconomic variables include inflation, oil prices, interest rate and exchange rate. For the very purpose monthly time series data has been arranged from Jan 2010 to Dec 2014. The analytical framework contains.

Adaptive Antenna, Directive Gain, Direction of Maxima, Direction of Null, Interferer Direction S-Parameters.

"Performance Evaluation of Adaptive Array Antenna using Least Mean Square Algorithm ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 7, page no.b382-b387, July-2023, Available :http://www.jetir.org/papers/JETIR2307149.pdf

"Performance Evaluation of Adaptive Array Antenna using Least Mean Square Algorithm ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 7, page no. ppb382-b387, July-2023, Available at : http://www.jetir.org/papers/JETIR2307149.pdf