Swarm Intelligence-based Optimal Design to Minimize the Sidelobe Level of Concentric Circular Antenna Array with Element Failures

ABSTRACT

In an antenna array due to large number of elements, there is always a possibility of failure of one or more elements in the array system, which results in increased SLL with distorted radiation pattern. Recovering the optimal beam pattern can be done by recalculating the amplitude distributions for array elements leaving the failed elements. Here, we have corrected the radiation pattern for concentric circular antenna array (CCAA) with central element, as CCAA with central element is widely implemented in smart antennas and mobile communication. A central element has been added to array to increase the steering capability of proposed array. It has been noticed that after failure of three or more number of elements with central element, there is a significant increase in side lobe level (SLL) which degrades the performance of the system. This distortion is corrected using bacterial foraging optimization, standard particle swarm optimization (PSO), and craziness-based particle swarm optimization (CRPSO) technique. The results of standard PSO and CRPSO are compared for a three ring CCAA with central element and it has been concluded that CRPSO gives the optimum result.

KEYWORDS:

• Bacteria foraging algorithm
• Concentric circular antenna array
• Craziness-based particle swarm optimization
• Failed antenna array
• First null beamwidth
• Particle swarm optimization
• Side lobe level

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work is part of a project funded by SERB, Department of Science and Technology-Government of India [grant number SB/EMEQ-319/2013].

Notes on contributors

Pratyusa Kumar Sahoo

Pratyusa Kumar Sahoo was born in Kainipura in Keonjhar district of Odisha, India. He received his graduation degree in electronics and communication engineering from Krupajal Engineering College under Biju Patnaik University of Technology, Rourkela. He has completed MTech degree in telecommunication engineering from NIT Durgapur,Durgapur, West Bengal in 2017. Currently he is working as a junior engineer in BSNL. His research interests include correction of failed antenna arrays using evolutionary algorithms.

E-mail: [email protected]

Durbadal Mandal

Durbadal Mandal passed BE degree in electronics and communication engineering, from Regional Engineering College, Durgapur, West Bengal, India in the year 1996. He received the MTech and PhD degrees from National Institute of Technology Durgapur, India in the year 2008 and 2011, respectively. Presently, he is attached with National Institute of Technology Durgapur, West Bengal, India, as an assistant professor in the Department of Electronics and Communication Engineering. His research interest includes array antenna design and filter optimization via evolutionary computing techniques. He has published more than 250 research papers in International Journals and Conferences.