{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T04:50:42Z","timestamp":1777697442691,"version":"3.51.4"},"reference-count":9,"publisher":"SAGE Publications","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IDT"],"published-print":{"date-parts":[[2022,4,18]]},"abstract":"<jats:p>Element failure in antenna arrays leads to severe degradation of the radiation pattern. It is significantly more complex in circular antenna arrays (CAA) considering its geometry and elements spatial distribution along the circumference of the circle. Several design parameters like the coefficient of current amplitude excitation, phase, and arc length are determined appropriately to obtain the desired parameters involved in the pattern restoration process. It is possible to rely on alternate desired parameters to restore the patterns without disturbing the actual design parameters involved in the optimization process. In this paper, such an attempt to optimize CAA using non-uniform amplitude distribution is considered. After enforcing multiple-element failure, the resultant defective pattern is restored by determining the non-uniform spatial distribution of four consecutive elements preserving the corresponding non-uniform amplitude distribution. Hence, it is justifying mentioning that the position-only technique is used to restore the pattern in terms of optimized SLL and BW. The spatial distribution of optimized CAA is determined using the latest modified Social Group Optimization Algorithm (MSGOA) and compared the results with the well-known Flower Pollination Algorithm (FPA). The MATLAB\u00ae is used to carry out the simulations, and results are analyzed.<\/jats:p>","DOI":"10.3233\/idt-210030","type":"journal-article","created":{"date-parts":[[2022,3,15]],"date-time":"2022-03-15T12:09:54Z","timestamp":1647346194000},"page":"29-36","source":"Crossref","is-referenced-by-count":0,"title":["Optimizing alternate design parameters for pattern restoration in circular antenna arrays using nature-inspired techniques"],"prefix":"10.1177","volume":"16","author":[{"given":"A.V. Satya","family":"Swathi","sequence":"first","affiliation":[{"name":"Centurion University of Technology and Management, Odisha, India"},{"name":"Department of Electronics and Communication Engineering, Raghu Institute of Technology, Visakhapatnam, India"}]},{"given":"V.V.S.S.S.","family":"Chakravarthy","sequence":"additional","affiliation":[{"name":"Department of Electronics and Communication Engineering, Raghu Institute of Technology, Visakhapatnam, India"}]},{"given":"M. Vamshi","family":"Krishna","sequence":"additional","affiliation":[{"name":"Dhanekula Institute of Engineering and Technology, Vijayawada, India"}]}],"member":"179","reference":[{"issue":"11","key":"10.3233\/IDT-210030_ref1","doi-asserted-by":"crossref","first-page":"1365","DOI":"10.1049\/iet-map.2010.0204","article-title":"Design of non-uniform circular antenna arrays using biogeography-based optimisation","volume":"5","author":"Singh","year":"2011","journal-title":"IET Microwaves, Antennas & Propagation"},{"key":"10.3233\/IDT-210030_ref2","doi-asserted-by":"crossref","unstructured":"Dib N, Sharaqa A. On the optimal design of non-uniform circular antenna arrays. Journal of Applied Electromagnetism. 2012 Jun 1; 14(1).","DOI":"10.1109\/APS.2012.6347952"},{"issue":"5","key":"10.3233\/IDT-210030_ref3","doi-asserted-by":"crossref","first-page":"441","DOI":"10.1017\/S1759078709990687","article-title":"Optimization of circular antenna arrays of isotropic radiators using simulated annealing","volume":"1","author":"Rattan","year":"2009","journal-title":"International Journal of Microwave and Wireless Technologies"},{"key":"10.3233\/IDT-210030_ref4","unstructured":"Zare AS, Baghaiee S. Application of Ant Colony Optimization Algorithm to Pattern Synthesis of Uniform Circular Antenna Array. Applied Computational Electromagnetics Society Journal. 2015 Aug 1; 30(8)."},{"issue":"1","key":"10.3233\/IDT-210030_ref5","doi-asserted-by":"crossref","first-page":"845","DOI":"10.1007\/s11277-017-4540-5","article-title":"A non-uniform circular antenna array failure correction using firefly algorithm","volume":"97","author":"Grewal","year":"2017","journal-title":"Wireless Personal Communications"},{"issue":"12","key":"10.3233\/IDT-210030_ref7","doi-asserted-by":"crossref","first-page":"1543","DOI":"10.1109\/8.546240","article-title":"Array failure correction with a digitally beamformed array","volume":"44","author":"Mailloux","year":"1996","journal-title":"IEEE Transactions on Antennas and Propagation"},{"issue":"3","key":"10.3233\/IDT-210030_ref8","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1049\/el:19910174","article-title":"Beamforming in presence of element failure","volume":"27","author":"Er","year":"1991","journal-title":"Electronics Letters"},{"issue":"2","key":"10.3233\/IDT-210030_ref9","doi-asserted-by":"crossref","first-page":"136","DOI":"10.14429\/dsj.64.4250","article-title":"A linear antenna array failure correction with null steering using firefly algorithm","volume":"64","author":"Grewal","year":"2014","journal-title":"Defence Science Journal"},{"issue":"8","key":"10.3233\/IDT-210030_ref10","doi-asserted-by":"crossref","first-page":"e22247","DOI":"10.1002\/mmce.22247","article-title":"Optimization of circular antenna arrays using the cuckoo search algorithm","volume":"30","author":"Khodier","year":"2020","journal-title":"International Journal of RF and Microwave Computer-Aided Engineering"}],"container-title":["Intelligent Decision Technologies"],"original-title":[],"link":[{"URL":"https:\/\/content.iospress.com\/download?id=10.3233\/IDT-210030","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T09:23:07Z","timestamp":1777454587000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/full\/10.3233\/IDT-210030"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,4,18]]},"references-count":9,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.3233\/idt-210030","relation":{},"ISSN":["1872-4981","1875-8843"],"issn-type":[{"value":"1872-4981","type":"print"},{"value":"1875-8843","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4,18]]}}}