A low RCS wideband high gain CP slot antenna loaded with frequency selective surface

ABSTRACT

In this paper, a compact wideband circularly polarized slot antenna consisting of two L-shaped resonators is proposed. The slot antenna is loaded with a band-stop frequency selective surface (FSS) reflector to improve the gain of the antenna and to reduce the profile of the antenna. The radiation and scattering characteristics of FSS loaded slot antenna are compared with the metallic reflector loaded slot antenna, and the proposed antenna shows improved impedance bandwidth of 1.75–2.65 GHz. The measured results show that the peak gain of the slot antenna with FSS is enhanced by 4 dB. The proposed antenna with FSS also exhibits 3-dB ARBW of 2.2–2.65 GHz, and the scattering performance shows an average RCS reduction of 7.34 dB is achieved by slot antenna with FSS as compared to slot antenna with metallic reflector with peak RCS reduction of 24 dB at 1.2 GHz.

KEYWORDS:

• Slot antenna
• RCS reduction
• wideband
• CP and Axial ratio

ORCID

Satya P. Singh http://orcid.org/0000-0003-3159-3622

Additional information

Notes on contributors

Hridesh Kumar Verma

Hridesh Kumar Verma (b.1982) received the B.E. (2002) degree in Electronics & Communication Engineering, and M.E. (2003–2005) Degree in Microwave Communication & Radar Engineering, from the Institute of Engineering & Technology, (Dr. B. R. Ambedkar University) Agra India. His current research interests include RF Communication, Microstrip Antenna, resonator design and Microwave Device Designing Technology. He served as O&M Engineer (2005–2007) Ericsson India Pvt. Ltd. Cuttack Orissa, MCN Incharge (2007–2008) India., He also served as Sr. Lecturer (2008–2010), Assistant Professor (2010–2015), in Electronics & Communication Engineering Department at Engineering Institutions Greater Noida, (U.P.) He has served as Lecturer (Oct. 2015–Sep.2018) at Bule Hora University, Ethiopia (Africa), and still engaged in teaching profession till date. He is the author/co-author of 15 Research Papers in refereed Journals, International and National Conferences.

Mithilesh Kumar

Mithilesh Kumar (b.1969) received the B.E. (1992) degree in Electronics & Communication Engineering from the Govt. Engineering College, KOTA, University of Rajasthan, M. Tech. (1998–99) Degree in Communication & Radar Engineering, and Ph. D. (2011) Degree in RF Communication Engineering from the Indian Institute of Technology, Delhi. India. His current research interests include RF Communication, UWB Active Antenna, Microstrip Antenna and Microwave Device Designing Technology. He served as a Lecturer (1993–2000) Sr. Assistant Professor (2000–2008), Associate Professor (2008–2013), and Professor (2013-till date) in Electronics Engineering Department at Rajasthan Technical University Kota, Rajasthan. He has served as the Principal (Oct. 2014–Feb.2019) of Govt. Engineering College Jhalawar and additional charge of Govt. Engineering College Baran. He is the author/co-author of 183 Research Papers in refereed Journals, International and National Reliance Communication Ltd. Jamshedpur Conferences. He received “First prize best student paper platinum award” in 2009 at the IEEE International conference on Antennas, Propagation and Systems (INAS-2009) held at Johor Bahru, Malaysia from December 3–5, 2009. He is visited Malaysia, Japan, and Germany. He is a Member of the IEEE-Microwave Theory and Techniques Society.

R. S. Meena

Dr. R. S. Meena was born in 1969. He received his BE (EC & Comm.) in 1993 from University of Rajasthan, MTech (Integrated Electronics and Circuits) in 2002 from IIT Delhi and PhD in 2011 from IIT Delhi. Presently he is associated with Rajasthan Technical University Kota, Rajasthan, India as Professor and Head of Electronics Engineering department. His research interests include Microwave, VLSI design and Microelectronics. He has published more than 55 papers in international/National journals/conferences. He has been awarded with outstanding engineer by Rajasthan Engineer society in 2012, best paper awards in National Conference on Power and Energy Systems (NCPES-2011), ISTE April 23–24, 2011.

Satya P. Singh

Satya P. Singh received the bachelor's degree in Electronics & Telecommunication Engineering from IETE, New Delhi, India, Master's degree in Electrical and Electronics Engineering from the YMCA University of Science and Technology, India, and Ph.D. degree in Electrical Engineering from Gautam Buddha University, India. Currently, he is Post-Doc Research Fellow in Lee Kong Chian School of Medicine at Nanyang Technological University, Singapore. He is serving as an associate editor for Measurement Journal (Elsevier) and Measure-sensors Journal (Elsevier). His research interests include artificial intelligence in healthcare and development of medical imaging algorithms for computer-aided diagnosis of life-threatening diseases.